annotate babel/dates.py @ 511:f2098e9c05b4 stable-0.9.x

Fix bad check in format_time (closes #257), reported with patch and tests by jomae
author fschwarz
date Fri, 04 Mar 2011 22:34:14 +0000
parents 3295127550fe
children 790d49d8ba30
rev   line source
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1 # -*- coding: utf-8 -*-
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2 #
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3 # Copyright (C) 2007 Edgewall Software
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4 # All rights reserved.
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5 #
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6 # This software is licensed as described in the file COPYING, which
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7 # you should have received as part of this distribution. The terms
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8 # are also available at http://babel.edgewall.org/wiki/License.
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9 #
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10 # This software consists of voluntary contributions made by many
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11 # individuals. For the exact contribution history, see the revision
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12 # history and logs, available at http://babel.edgewall.org/log/.
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13
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14 """Locale dependent formatting and parsing of dates and times.
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15
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16 The default locale for the functions in this module is determined by the
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17 following environment variables, in that order:
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18
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19 * ``LC_TIME``,
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20 * ``LC_ALL``, and
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21 * ``LANG``
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22 """
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23
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24 from datetime import date, datetime, time, timedelta, tzinfo
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a22b7656e9ae Started implementation of datetime parsing, using a very basic approach for now.
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25 import re
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26
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27 from babel.core import default_locale, get_global, Locale
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3b314a78015d Move function for determining the system default locale to `babel.core`, and make it available as a class method on `Locale`.
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28 from babel.util import UTC
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29
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30 __all__ = ['format_date', 'format_datetime', 'format_time',
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31 'get_timezone_name', 'parse_date', 'parse_datetime', 'parse_time']
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32 __docformat__ = 'restructuredtext en'
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33
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4dcdb1d367ec More explicit module-level function names in `babel.core`. Added `Locale.negotiate` class method.
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34 LC_TIME = default_locale('LC_TIME')
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35
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36 # Aliases for use in scopes where the modules are shadowed by local variables
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37 date_ = date
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38 datetime_ = datetime
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39 time_ = time
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40
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41 def get_period_names(locale=LC_TIME):
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42 """Return the names for day periods (AM/PM) used by the locale.
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43
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44 >>> get_period_names(locale='en_US')['am']
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45 u'AM'
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46
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47 :param locale: the `Locale` object, or a locale string
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48 :return: the dictionary of period names
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49 :rtype: `dict`
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50 """
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51 return Locale.parse(locale).periods
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52
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53 def get_day_names(width='wide', context='format', locale=LC_TIME):
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54 """Return the day names used by the locale for the specified format.
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55
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56 >>> get_day_names('wide', locale='en_US')[1]
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57 u'Tuesday'
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58 >>> get_day_names('abbreviated', locale='es')[1]
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59 u'mar'
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60 >>> get_day_names('narrow', context='stand-alone', locale='de_DE')[1]
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61 u'D'
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62
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63 :param width: the width to use, one of "wide", "abbreviated", or "narrow"
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64 :param context: the context, either "format" or "stand-alone"
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65 :param locale: the `Locale` object, or a locale string
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66 :return: the dictionary of day names
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67 :rtype: `dict`
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68 """
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69 return Locale.parse(locale).days[context][width]
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70
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71 def get_month_names(width='wide', context='format', locale=LC_TIME):
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72 """Return the month names used by the locale for the specified format.
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73
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74 >>> get_month_names('wide', locale='en_US')[1]
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75 u'January'
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76 >>> get_month_names('abbreviated', locale='es')[1]
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77 u'ene'
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78 >>> get_month_names('narrow', context='stand-alone', locale='de_DE')[1]
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79 u'J'
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80
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81 :param width: the width to use, one of "wide", "abbreviated", or "narrow"
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82 :param context: the context, either "format" or "stand-alone"
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83 :param locale: the `Locale` object, or a locale string
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84 :return: the dictionary of month names
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85 :rtype: `dict`
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86 """
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87 return Locale.parse(locale).months[context][width]
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88
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89 def get_quarter_names(width='wide', context='format', locale=LC_TIME):
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90 """Return the quarter names used by the locale for the specified format.
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91
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92 >>> get_quarter_names('wide', locale='en_US')[1]
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93 u'1st quarter'
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94 >>> get_quarter_names('abbreviated', locale='de_DE')[1]
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95 u'Q1'
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96
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97 :param width: the width to use, one of "wide", "abbreviated", or "narrow"
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98 :param context: the context, either "format" or "stand-alone"
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99 :param locale: the `Locale` object, or a locale string
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100 :return: the dictionary of quarter names
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101 :rtype: `dict`
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102 """
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103 return Locale.parse(locale).quarters[context][width]
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104
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105 def get_era_names(width='wide', locale=LC_TIME):
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106 """Return the era names used by the locale for the specified format.
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107
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108 >>> get_era_names('wide', locale='en_US')[1]
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109 u'Anno Domini'
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110 >>> get_era_names('abbreviated', locale='de_DE')[1]
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111 u'n. Chr.'
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112
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113 :param width: the width to use, either "wide", "abbreviated", or "narrow"
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114 :param locale: the `Locale` object, or a locale string
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115 :return: the dictionary of era names
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116 :rtype: `dict`
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117 """
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118 return Locale.parse(locale).eras[width]
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119
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120 def get_date_format(format='medium', locale=LC_TIME):
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121 """Return the date formatting patterns used by the locale for the specified
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122 format.
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123
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124 >>> get_date_format(locale='en_US')
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125 <DateTimePattern u'MMM d, yyyy'>
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126 >>> get_date_format('full', locale='de_DE')
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127 <DateTimePattern u'EEEE, d. MMMM yyyy'>
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128
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129 :param format: the format to use, one of "full", "long", "medium", or
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130 "short"
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131 :param locale: the `Locale` object, or a locale string
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132 :return: the date format pattern
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133 :rtype: `DateTimePattern`
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134 """
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135 return Locale.parse(locale).date_formats[format]
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136
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137 def get_datetime_format(format='medium', locale=LC_TIME):
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138 """Return the datetime formatting patterns used by the locale for the
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139 specified format.
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140
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141 >>> get_datetime_format(locale='en_US')
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142 u'{1} {0}'
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143
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144 :param format: the format to use, one of "full", "long", "medium", or
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145 "short"
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146 :param locale: the `Locale` object, or a locale string
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147 :return: the datetime format pattern
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148 :rtype: `unicode`
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149 """
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150 patterns = Locale.parse(locale).datetime_formats
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151 if format not in patterns:
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152 format = None
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153 return patterns[format]
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154
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155 def get_time_format(format='medium', locale=LC_TIME):
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156 """Return the time formatting patterns used by the locale for the specified
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157 format.
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158
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159 >>> get_time_format(locale='en_US')
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160 <DateTimePattern u'h:mm:ss a'>
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161 >>> get_time_format('full', locale='de_DE')
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162 <DateTimePattern u'HH:mm:ss v'>
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163
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164 :param format: the format to use, one of "full", "long", "medium", or
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165 "short"
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166 :param locale: the `Locale` object, or a locale string
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167 :return: the time format pattern
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168 :rtype: `DateTimePattern`
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169 """
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170 return Locale.parse(locale).time_formats[format]
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171
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172 def get_timezone_gmt(datetime=None, width='long', locale=LC_TIME):
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173 """Return the timezone associated with the given `datetime` object formatted
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174 as string indicating the offset from GMT.
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175
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176 >>> dt = datetime(2007, 4, 1, 15, 30)
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177 >>> get_timezone_gmt(dt, locale='en')
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178 u'GMT+00:00'
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179
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180 >>> from pytz import timezone
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181 >>> tz = timezone('America/Los_Angeles')
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182 >>> dt = datetime(2007, 4, 1, 15, 30, tzinfo=tz)
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183 >>> get_timezone_gmt(dt, locale='en')
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184 u'GMT-08:00'
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185 >>> get_timezone_gmt(dt, 'short', locale='en')
233
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186 u'-0800'
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187
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188 The long format depends on the locale, for example in France the acronym
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189 UTC string is used instead of GMT:
233
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190
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191 >>> get_timezone_gmt(dt, 'long', locale='fr_FR')
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192 u'UTC-08:00'
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193
247
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194 :param datetime: the ``datetime`` object; if `None`, the current date and
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195 time in UTC is used
233
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196 :param width: either "long" or "short"
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197 :param locale: the `Locale` object, or a locale string
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198 :return: the GMT offset representation of the timezone
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199 :rtype: `unicode`
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200 :since: version 0.9
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201 """
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202 if datetime is None:
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203 datetime = datetime_.utcnow()
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204 elif isinstance(datetime, (int, long)):
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205 datetime = datetime_.utcfromtimestamp(datetime).time()
233
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206 if datetime.tzinfo is None:
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207 datetime = datetime.replace(tzinfo=UTC)
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208 locale = Locale.parse(locale)
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209
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210 offset = datetime.tzinfo.utcoffset(datetime)
233
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211 seconds = offset.days * 24 * 60 * 60 + offset.seconds
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212 hours, seconds = divmod(seconds, 3600)
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213 if width == 'short':
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214 pattern = u'%+03d%02d'
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215 else:
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216 pattern = locale.zone_formats['gmt'] % '%+03d:%02d'
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217 return pattern % (hours, seconds // 60)
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218
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219 def get_timezone_location(dt_or_tzinfo=None, locale=LC_TIME):
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220 """Return a representation of the given timezone using "location format".
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221
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222 The result depends on both the local display name of the country and the
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223 city assocaited with the time zone:
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224
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225 >>> from pytz import timezone
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226 >>> tz = timezone('America/St_Johns')
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227 >>> get_timezone_location(tz, locale='de_DE')
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228 u"Kanada (St. John's)"
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229 >>> tz = timezone('America/Mexico_City')
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230 >>> get_timezone_location(tz, locale='de_DE')
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231 u'Mexiko (Mexiko-Stadt)'
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232
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233 If the timezone is associated with a country that uses only a single
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234 timezone, just the localized country name is returned:
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235
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236 >>> tz = timezone('Europe/Berlin')
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237 >>> get_timezone_name(tz, locale='de_DE')
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238 u'Deutschland'
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239
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240 :param dt_or_tzinfo: the ``datetime`` or ``tzinfo`` object that determines
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241 the timezone; if `None`, the current date and time in
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242 UTC is assumed
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243 :param locale: the `Locale` object, or a locale string
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244 :return: the localized timezone name using location format
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245 :rtype: `unicode`
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246 :since: version 0.9
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247 """
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248 if dt_or_tzinfo is None or isinstance(dt_or_tzinfo, (int, long)):
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249 dt = None
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250 tzinfo = UTC
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251 elif isinstance(dt_or_tzinfo, (datetime, time)):
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252 dt = dt_or_tzinfo
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253 if dt.tzinfo is not None:
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254 tzinfo = dt.tzinfo
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255 else:
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256 tzinfo = UTC
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257 else:
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258 dt = None
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259 tzinfo = dt_or_tzinfo
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260 locale = Locale.parse(locale)
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261
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262 if hasattr(tzinfo, 'zone'):
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263 zone = tzinfo.zone
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264 else:
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265 zone = tzinfo.tzname(dt or datetime.utcnow())
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266
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267 # Get the canonical time-zone code
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268 zone = get_global('zone_aliases').get(zone, zone)
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269
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270 info = locale.time_zones.get(zone, {})
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271
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272 # Otherwise, if there is only one timezone for the country, return the
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273 # localized country name
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274 region_format = locale.zone_formats['region']
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275 territory = get_global('zone_territories').get(zone)
254
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276 if territory not in locale.territories:
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277 territory = 'ZZ' # invalid/unknown
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278 territory_name = locale.territories[territory]
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279 if territory and len(get_global('territory_zones').get(territory, [])) == 1:
233
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280 return region_format % (territory_name)
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281
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282 # Otherwise, include the city in the output
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283 fallback_format = locale.zone_formats['fallback']
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284 if 'city' in info:
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285 city_name = info['city']
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286 else:
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287 metazone = get_global('meta_zones').get(zone)
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288 metazone_info = locale.meta_zones.get(metazone, {})
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289 if 'city' in metazone_info:
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290 city_name = metainfo['city']
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291 elif '/' in zone:
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292 city_name = zone.split('/', 1)[1].replace('_', ' ')
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293 else:
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294 city_name = zone.replace('_', ' ')
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295
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296 return region_format % (fallback_format % {
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297 '0': city_name,
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298 '1': territory_name
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299 })
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300
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301 def get_timezone_name(dt_or_tzinfo=None, width='long', uncommon=False,
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302 locale=LC_TIME):
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303 r"""Return the localized display name for the given timezone. The timezone
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304 may be specified using a ``datetime`` or `tzinfo` object.
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305
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306 >>> from pytz import timezone
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307 >>> dt = time(15, 30, tzinfo=timezone('America/Los_Angeles'))
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308 >>> get_timezone_name(dt, locale='en_US')
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309 u'Pacific Standard Time'
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310 >>> get_timezone_name(dt, width='short', locale='en_US')
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311 u'PST'
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312
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313 If this function gets passed only a `tzinfo` object and no concrete
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314 `datetime`, the returned display name is indenpendent of daylight savings
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315 time. This can be used for example for selecting timezones, or to set the
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316 time of events that recur across DST changes:
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317
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318 >>> tz = timezone('America/Los_Angeles')
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319 >>> get_timezone_name(tz, locale='en_US')
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320 u'Pacific Time'
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321 >>> get_timezone_name(tz, 'short', locale='en_US')
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322 u'PT'
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323
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324 If no localized display name for the timezone is available, and the timezone
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325 is associated with a country that uses only a single timezone, the name of
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326 that country is returned, formatted according to the locale:
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327
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328 >>> tz = timezone('Europe/Berlin')
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329 >>> get_timezone_name(tz, locale='de_DE')
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330 u'Deutschland'
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331 >>> get_timezone_name(tz, locale='pt_BR')
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332 u'Hor\xe1rio Alemanha'
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333
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334 On the other hand, if the country uses multiple timezones, the city is also
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335 included in the representation:
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336
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337 >>> tz = timezone('America/St_Johns')
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338 >>> get_timezone_name(tz, locale='de_DE')
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339 u"Kanada (St. John's)"
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340
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341 The `uncommon` parameter can be set to `True` to enable the use of timezone
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342 representations that are not commonly used by the requested locale. For
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343 example, while in French the central European timezone is usually
346
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344 abbreviated as "HEC", in Canadian French, this abbreviation is not in
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345 common use, so a generic name would be chosen by default:
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346
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347 >>> tz = timezone('Europe/Paris')
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348 >>> get_timezone_name(tz, 'short', locale='fr_CA')
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349 u'France'
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350 >>> get_timezone_name(tz, 'short', uncommon=True, locale='fr_CA')
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351 u'HEC'
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352
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353 :param dt_or_tzinfo: the ``datetime`` or ``tzinfo`` object that determines
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354 the timezone; if a ``tzinfo`` object is used, the
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355 resulting display name will be generic, i.e.
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356 independent of daylight savings time; if `None`, the
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357 current date in UTC is assumed
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358 :param width: either "long" or "short"
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359 :param uncommon: whether even uncommon timezone abbreviations should be used
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360 :param locale: the `Locale` object, or a locale string
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361 :return: the timezone display name
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362 :rtype: `unicode`
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363 :since: version 0.9
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364 :see: `LDML Appendix J: Time Zone Display Names
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365 <http://www.unicode.org/reports/tr35/#Time_Zone_Fallback>`_
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366 """
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367 if dt_or_tzinfo is None or isinstance(dt_or_tzinfo, (int, long)):
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368 dt = None
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369 tzinfo = UTC
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370 elif isinstance(dt_or_tzinfo, (datetime, time)):
233
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371 dt = dt_or_tzinfo
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372 if dt.tzinfo is not None:
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373 tzinfo = dt.tzinfo
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374 else:
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375 tzinfo = UTC
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376 else:
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377 dt = None
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378 tzinfo = dt_or_tzinfo
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379 locale = Locale.parse(locale)
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380
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381 if hasattr(tzinfo, 'zone'):
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382 zone = tzinfo.zone
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383 else:
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384 zone = tzinfo.tzname(dt)
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385
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386 # Get the canonical time-zone code
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387 zone = get_global('zone_aliases').get(zone, zone)
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388
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389 info = locale.time_zones.get(zone, {})
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390 # Try explicitly translated zone names first
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391 if width in info:
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392 if dt is None:
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393 field = 'generic'
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394 else:
349
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395 dst = tzinfo.dst(dt)
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396 if dst is None:
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397 field = 'generic'
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398 elif dst == 0:
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399 field = 'standard'
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400 else:
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401 field = 'daylight'
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402 if field in info[width]:
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403 return info[width][field]
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404
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405 metazone = get_global('meta_zones').get(zone)
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406 if metazone:
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407 metazone_info = locale.meta_zones.get(metazone, {})
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408 if width in metazone_info and (uncommon or metazone_info.get('common')):
233
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409 if dt is None:
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410 field = 'generic'
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411 else:
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412 field = tzinfo.dst(dt) and 'daylight' or 'standard'
346
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413 if field in metazone_info[width]:
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414 return metazone_info[width][field]
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415
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416 # If we have a concrete datetime, we assume that the result can't be
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417 # independent of daylight savings time, so we return the GMT offset
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418 if dt is not None:
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419 return get_timezone_gmt(dt, width=width, locale=locale)
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420
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421 return get_timezone_location(dt_or_tzinfo, locale=locale)
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422
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423 def format_date(date=None, format='medium', locale=LC_TIME):
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424 """Return a date formatted according to the given pattern.
1
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425
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426 >>> d = date(2007, 04, 01)
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427 >>> format_date(d, locale='en_US')
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428 u'Apr 1, 2007'
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429 >>> format_date(d, format='full', locale='de_DE')
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430 u'Sonntag, 1. April 2007'
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431
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432 If you don't want to use the locale default formats, you can specify a
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433 custom date pattern:
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434
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435 >>> format_date(d, "EEE, MMM d, ''yy", locale='en')
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436 u"Sun, Apr 1, '07"
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437
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438 :param date: the ``date`` or ``datetime`` object; if `None`, the current
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439 date is used
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440 :param format: one of "full", "long", "medium", or "short", or a custom
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441 date/time pattern
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442 :param locale: a `Locale` object or a locale identifier
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443 :rtype: `unicode`
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444
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445 :note: If the pattern contains time fields, an `AttributeError` will be
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446 raised when trying to apply the formatting. This is also true if
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447 the value of ``date`` parameter is actually a ``datetime`` object,
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448 as this function automatically converts that to a ``date``.
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449 """
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450 if date is None:
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451 date = date_.today()
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452 elif isinstance(date, datetime):
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453 date = date.date()
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454
1
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455 locale = Locale.parse(locale)
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456 if format in ('full', 'long', 'medium', 'short'):
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457 format = get_date_format(format, locale=locale)
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458 pattern = parse_pattern(format)
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459 return pattern.apply(date, locale)
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460
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461 def format_datetime(datetime=None, format='medium', tzinfo=None,
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462 locale=LC_TIME):
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463 """Return a date formatted according to the given pattern.
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464
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465 >>> dt = datetime(2007, 04, 01, 15, 30)
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466 >>> format_datetime(dt, locale='en_US')
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467 u'Apr 1, 2007 3:30:00 PM'
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468
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469 For any pattern requiring the display of the time-zone, the third-party
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470 ``pytz`` package is needed to explicitly specify the time-zone:
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471
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472 >>> from pytz import timezone
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473 >>> format_datetime(dt, 'full', tzinfo=timezone('Europe/Paris'),
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diff changeset
474 ... locale='fr_FR')
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475 u'dimanche 1 avril 2007 17:30:00 HEC'
34
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476 >>> format_datetime(dt, "yyyy.MM.dd G 'at' HH:mm:ss zzz",
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parents: 33
diff changeset
477 ... tzinfo=timezone('US/Eastern'), locale='en')
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parents: 33
diff changeset
478 u'2007.04.01 AD at 11:30:00 EDT'
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parents: 33
diff changeset
479
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480 :param datetime: the `datetime` object; if `None`, the current date and
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481 time is used
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parents: 15
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482 :param format: one of "full", "long", "medium", or "short", or a custom
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parents: 15
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483 date/time pattern
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484 :param tzinfo: the timezone to apply to the time for display
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parents: 18
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485 :param locale: a `Locale` object or a locale identifier
1
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486 :rtype: `unicode`
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487 """
33
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parents: 29
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488 if datetime is None:
349
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diff changeset
489 datetime = datetime_.utcnow()
34
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parents: 33
diff changeset
490 elif isinstance(datetime, (int, long)):
379
1c0915da48c6 Ported [407:415/trunk] back to 0.9.x branch.
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diff changeset
491 datetime = datetime_.utcfromtimestamp(datetime)
34
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parents: 33
diff changeset
492 elif isinstance(datetime, time):
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493 datetime = datetime_.combine(date.today(), datetime)
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parents: 33
diff changeset
494 if datetime.tzinfo is None:
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495 datetime = datetime.replace(tzinfo=UTC)
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parents: 33
diff changeset
496 if tzinfo is not None:
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diff changeset
497 datetime = datetime.astimezone(tzinfo)
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diff changeset
498 if hasattr(tzinfo, 'normalize'): # pytz
34
3666f3d3df15 Extended time-zone support.
cmlenz
parents: 33
diff changeset
499 datetime = tzinfo.normalize(datetime)
3666f3d3df15 Extended time-zone support.
cmlenz
parents: 33
diff changeset
500
18
77a68f88f6bc Started documentation for date formatting, plus some code tweaks in that area.
cmlenz
parents: 16
diff changeset
501 locale = Locale.parse(locale)
77a68f88f6bc Started documentation for date formatting, plus some code tweaks in that area.
cmlenz
parents: 16
diff changeset
502 if format in ('full', 'long', 'medium', 'short'):
33
0740b6d31799 * Import datetime patterns from CLDR.
cmlenz
parents: 29
diff changeset
503 return get_datetime_format(format, locale=locale) \
34
3666f3d3df15 Extended time-zone support.
cmlenz
parents: 33
diff changeset
504 .replace('{0}', format_time(datetime, format, tzinfo=None,
33
0740b6d31799 * Import datetime patterns from CLDR.
cmlenz
parents: 29
diff changeset
505 locale=locale)) \
0740b6d31799 * Import datetime patterns from CLDR.
cmlenz
parents: 29
diff changeset
506 .replace('{1}', format_date(datetime, format, locale=locale))
0740b6d31799 * Import datetime patterns from CLDR.
cmlenz
parents: 29
diff changeset
507 else:
0740b6d31799 * Import datetime patterns from CLDR.
cmlenz
parents: 29
diff changeset
508 return parse_pattern(format).apply(datetime, locale)
1
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
509
34
3666f3d3df15 Extended time-zone support.
cmlenz
parents: 33
diff changeset
510 def format_time(time=None, format='medium', tzinfo=None, locale=LC_TIME):
101
1312ad6b624d Add wrapper class bundling the various formatting functions bound to a specific locale and time-zone.
cmlenz
parents: 72
diff changeset
511 """Return a time formatted according to the given pattern.
1
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
512
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
513 >>> t = time(15, 30)
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
514 >>> format_time(t, locale='en_US')
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
515 u'3:30:00 PM'
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
516 >>> format_time(t, format='short', locale='de_DE')
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
517 u'15:30'
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
518
16
ed154241c08d Handle escape chars in datetime patterns.
cmlenz
parents: 15
diff changeset
519 If you don't want to use the locale default formats, you can specify a
ed154241c08d Handle escape chars in datetime patterns.
cmlenz
parents: 15
diff changeset
520 custom time pattern:
ed154241c08d Handle escape chars in datetime patterns.
cmlenz
parents: 15
diff changeset
521
ed154241c08d Handle escape chars in datetime patterns.
cmlenz
parents: 15
diff changeset
522 >>> format_time(t, "hh 'o''clock' a", locale='en')
ed154241c08d Handle escape chars in datetime patterns.
cmlenz
parents: 15
diff changeset
523 u"03 o'clock PM"
ed154241c08d Handle escape chars in datetime patterns.
cmlenz
parents: 15
diff changeset
524
29
da1c9610e751 More work on timezones.
cmlenz
parents: 19
diff changeset
525 For any pattern requiring the display of the time-zone, the third-party
da1c9610e751 More work on timezones.
cmlenz
parents: 19
diff changeset
526 ``pytz`` package is needed to explicitly specify the time-zone:
da1c9610e751 More work on timezones.
cmlenz
parents: 19
diff changeset
527
101
1312ad6b624d Add wrapper class bundling the various formatting functions bound to a specific locale and time-zone.
cmlenz
parents: 72
diff changeset
528 >>> from pytz import timezone
349
7e2983180f6d Ported [385] to 0.9.x branch.
cmlenz
parents: 346
diff changeset
529 >>> t = datetime(2007, 4, 1, 15, 30)
7e2983180f6d Ported [385] to 0.9.x branch.
cmlenz
parents: 346
diff changeset
530 >>> tzinfo = timezone('Europe/Paris')
7e2983180f6d Ported [385] to 0.9.x branch.
cmlenz
parents: 346
diff changeset
531 >>> t = tzinfo.localize(t)
7e2983180f6d Ported [385] to 0.9.x branch.
cmlenz
parents: 346
diff changeset
532 >>> format_time(t, format='full', tzinfo=tzinfo, locale='fr_FR')
7e2983180f6d Ported [385] to 0.9.x branch.
cmlenz
parents: 346
diff changeset
533 u'15:30:00 HEC'
34
3666f3d3df15 Extended time-zone support.
cmlenz
parents: 33
diff changeset
534 >>> format_time(t, "hh 'o''clock' a, zzzz", tzinfo=timezone('US/Eastern'),
3666f3d3df15 Extended time-zone support.
cmlenz
parents: 33
diff changeset
535 ... locale='en')
349
7e2983180f6d Ported [385] to 0.9.x branch.
cmlenz
parents: 346
diff changeset
536 u"09 o'clock AM, Eastern Daylight Time"
7e2983180f6d Ported [385] to 0.9.x branch.
cmlenz
parents: 346
diff changeset
537
7e2983180f6d Ported [385] to 0.9.x branch.
cmlenz
parents: 346
diff changeset
538 As that example shows, when this function gets passed a
7e2983180f6d Ported [385] to 0.9.x branch.
cmlenz
parents: 346
diff changeset
539 ``datetime.datetime`` value, the actual time in the formatted string is
7e2983180f6d Ported [385] to 0.9.x branch.
cmlenz
parents: 346
diff changeset
540 adjusted to the timezone specified by the `tzinfo` parameter. If the
7e2983180f6d Ported [385] to 0.9.x branch.
cmlenz
parents: 346
diff changeset
541 ``datetime`` is "naive" (i.e. it has no associated timezone information),
7e2983180f6d Ported [385] to 0.9.x branch.
cmlenz
parents: 346
diff changeset
542 it is assumed to be in UTC.
7e2983180f6d Ported [385] to 0.9.x branch.
cmlenz
parents: 346
diff changeset
543
7e2983180f6d Ported [385] to 0.9.x branch.
cmlenz
parents: 346
diff changeset
544 These timezone calculations are **not** performed if the value is of type
7e2983180f6d Ported [385] to 0.9.x branch.
cmlenz
parents: 346
diff changeset
545 ``datetime.time``, as without date information there's no way to determine
7e2983180f6d Ported [385] to 0.9.x branch.
cmlenz
parents: 346
diff changeset
546 what a given time would translate to in a different timezone without
7e2983180f6d Ported [385] to 0.9.x branch.
cmlenz
parents: 346
diff changeset
547 information about whether daylight savings time is in effect or not. This
7e2983180f6d Ported [385] to 0.9.x branch.
cmlenz
parents: 346
diff changeset
548 means that time values are left as-is, and the value of the `tzinfo`
7e2983180f6d Ported [385] to 0.9.x branch.
cmlenz
parents: 346
diff changeset
549 parameter is only used to display the timezone name if needed:
7e2983180f6d Ported [385] to 0.9.x branch.
cmlenz
parents: 346
diff changeset
550
7e2983180f6d Ported [385] to 0.9.x branch.
cmlenz
parents: 346
diff changeset
551 >>> t = time(15, 30)
7e2983180f6d Ported [385] to 0.9.x branch.
cmlenz
parents: 346
diff changeset
552 >>> format_time(t, format='full', tzinfo=timezone('Europe/Paris'),
7e2983180f6d Ported [385] to 0.9.x branch.
cmlenz
parents: 346
diff changeset
553 ... locale='fr_FR')
7e2983180f6d Ported [385] to 0.9.x branch.
cmlenz
parents: 346
diff changeset
554 u'15:30:00 HEC'
7e2983180f6d Ported [385] to 0.9.x branch.
cmlenz
parents: 346
diff changeset
555 >>> format_time(t, format='full', tzinfo=timezone('US/Eastern'),
7e2983180f6d Ported [385] to 0.9.x branch.
cmlenz
parents: 346
diff changeset
556 ... locale='en_US')
7e2983180f6d Ported [385] to 0.9.x branch.
cmlenz
parents: 346
diff changeset
557 u'3:30:00 PM ET'
29
da1c9610e751 More work on timezones.
cmlenz
parents: 19
diff changeset
558
33
0740b6d31799 * Import datetime patterns from CLDR.
cmlenz
parents: 29
diff changeset
559 :param time: the ``time`` or ``datetime`` object; if `None`, the current
349
7e2983180f6d Ported [385] to 0.9.x branch.
cmlenz
parents: 346
diff changeset
560 time in UTC is used
16
ed154241c08d Handle escape chars in datetime patterns.
cmlenz
parents: 15
diff changeset
561 :param format: one of "full", "long", "medium", or "short", or a custom
ed154241c08d Handle escape chars in datetime patterns.
cmlenz
parents: 15
diff changeset
562 date/time pattern
29
da1c9610e751 More work on timezones.
cmlenz
parents: 19
diff changeset
563 :param tzinfo: the time-zone to apply to the time for display
19
c0c92d11f1ab Moved some datetime tests from doctest to unittest, to avoid breaking docutils/epydoc doctest block detection.
cmlenz
parents: 18
diff changeset
564 :param locale: a `Locale` object or a locale identifier
1
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
565 :rtype: `unicode`
19
c0c92d11f1ab Moved some datetime tests from doctest to unittest, to avoid breaking docutils/epydoc doctest block detection.
cmlenz
parents: 18
diff changeset
566
c0c92d11f1ab Moved some datetime tests from doctest to unittest, to avoid breaking docutils/epydoc doctest block detection.
cmlenz
parents: 18
diff changeset
567 :note: If the pattern contains date fields, an `AttributeError` will be
c0c92d11f1ab Moved some datetime tests from doctest to unittest, to avoid breaking docutils/epydoc doctest block detection.
cmlenz
parents: 18
diff changeset
568 raised when trying to apply the formatting. This is also true if
c0c92d11f1ab Moved some datetime tests from doctest to unittest, to avoid breaking docutils/epydoc doctest block detection.
cmlenz
parents: 18
diff changeset
569 the value of ``time`` parameter is actually a ``datetime`` object,
c0c92d11f1ab Moved some datetime tests from doctest to unittest, to avoid breaking docutils/epydoc doctest block detection.
cmlenz
parents: 18
diff changeset
570 as this function automatically converts that to a ``time``.
1
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
571 """
33
0740b6d31799 * Import datetime patterns from CLDR.
cmlenz
parents: 29
diff changeset
572 if time is None:
349
7e2983180f6d Ported [385] to 0.9.x branch.
cmlenz
parents: 346
diff changeset
573 time = datetime.utcnow()
33
0740b6d31799 * Import datetime patterns from CLDR.
cmlenz
parents: 29
diff changeset
574 elif isinstance(time, (int, long)):
349
7e2983180f6d Ported [385] to 0.9.x branch.
cmlenz
parents: 346
diff changeset
575 time = datetime.utcfromtimestamp(time)
29
da1c9610e751 More work on timezones.
cmlenz
parents: 19
diff changeset
576 if time.tzinfo is None:
34
3666f3d3df15 Extended time-zone support.
cmlenz
parents: 33
diff changeset
577 time = time.replace(tzinfo=UTC)
349
7e2983180f6d Ported [385] to 0.9.x branch.
cmlenz
parents: 346
diff changeset
578 if isinstance(time, datetime):
7e2983180f6d Ported [385] to 0.9.x branch.
cmlenz
parents: 346
diff changeset
579 if tzinfo is not None:
7e2983180f6d Ported [385] to 0.9.x branch.
cmlenz
parents: 346
diff changeset
580 time = time.astimezone(tzinfo)
511
f2098e9c05b4 Fix bad check in format_time (closes #257), reported with patch and tests by jomae
fschwarz
parents: 503
diff changeset
581 if hasattr(tzinfo, 'normalize'): # pytz
349
7e2983180f6d Ported [385] to 0.9.x branch.
cmlenz
parents: 346
diff changeset
582 time = tzinfo.normalize(time)
7e2983180f6d Ported [385] to 0.9.x branch.
cmlenz
parents: 346
diff changeset
583 time = time.timetz()
7e2983180f6d Ported [385] to 0.9.x branch.
cmlenz
parents: 346
diff changeset
584 elif tzinfo is not None:
7e2983180f6d Ported [385] to 0.9.x branch.
cmlenz
parents: 346
diff changeset
585 time = time.replace(tzinfo=tzinfo)
34
3666f3d3df15 Extended time-zone support.
cmlenz
parents: 33
diff changeset
586
1
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
587 locale = Locale.parse(locale)
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
588 if format in ('full', 'long', 'medium', 'short'):
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
589 format = get_time_format(format, locale=locale)
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
590 return parse_pattern(format).apply(time, locale)
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
591
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
592 def parse_date(string, locale=LC_TIME):
38
a22b7656e9ae Started implementation of datetime parsing, using a very basic approach for now.
cmlenz
parents: 34
diff changeset
593 """Parse a date from a string.
a22b7656e9ae Started implementation of datetime parsing, using a very basic approach for now.
cmlenz
parents: 34
diff changeset
594
a22b7656e9ae Started implementation of datetime parsing, using a very basic approach for now.
cmlenz
parents: 34
diff changeset
595 This function uses the date format for the locale as a hint to determine
a22b7656e9ae Started implementation of datetime parsing, using a very basic approach for now.
cmlenz
parents: 34
diff changeset
596 the order in which the date fields appear in the string.
a22b7656e9ae Started implementation of datetime parsing, using a very basic approach for now.
cmlenz
parents: 34
diff changeset
597
a22b7656e9ae Started implementation of datetime parsing, using a very basic approach for now.
cmlenz
parents: 34
diff changeset
598 >>> parse_date('4/1/04', locale='en_US')
a22b7656e9ae Started implementation of datetime parsing, using a very basic approach for now.
cmlenz
parents: 34
diff changeset
599 datetime.date(2004, 4, 1)
a22b7656e9ae Started implementation of datetime parsing, using a very basic approach for now.
cmlenz
parents: 34
diff changeset
600 >>> parse_date('01.04.2004', locale='de_DE')
a22b7656e9ae Started implementation of datetime parsing, using a very basic approach for now.
cmlenz
parents: 34
diff changeset
601 datetime.date(2004, 4, 1)
a22b7656e9ae Started implementation of datetime parsing, using a very basic approach for now.
cmlenz
parents: 34
diff changeset
602
a22b7656e9ae Started implementation of datetime parsing, using a very basic approach for now.
cmlenz
parents: 34
diff changeset
603 :param string: the string containing the date
a22b7656e9ae Started implementation of datetime parsing, using a very basic approach for now.
cmlenz
parents: 34
diff changeset
604 :param locale: a `Locale` object or a locale identifier
a22b7656e9ae Started implementation of datetime parsing, using a very basic approach for now.
cmlenz
parents: 34
diff changeset
605 :return: the parsed date
a22b7656e9ae Started implementation of datetime parsing, using a very basic approach for now.
cmlenz
parents: 34
diff changeset
606 :rtype: `date`
a22b7656e9ae Started implementation of datetime parsing, using a very basic approach for now.
cmlenz
parents: 34
diff changeset
607 """
a22b7656e9ae Started implementation of datetime parsing, using a very basic approach for now.
cmlenz
parents: 34
diff changeset
608 # TODO: try ISO format first?
a22b7656e9ae Started implementation of datetime parsing, using a very basic approach for now.
cmlenz
parents: 34
diff changeset
609 format = get_date_format(locale=locale).pattern.lower()
a22b7656e9ae Started implementation of datetime parsing, using a very basic approach for now.
cmlenz
parents: 34
diff changeset
610 year_idx = format.index('y')
a22b7656e9ae Started implementation of datetime parsing, using a very basic approach for now.
cmlenz
parents: 34
diff changeset
611 month_idx = format.index('m')
a22b7656e9ae Started implementation of datetime parsing, using a very basic approach for now.
cmlenz
parents: 34
diff changeset
612 if month_idx < 0:
a22b7656e9ae Started implementation of datetime parsing, using a very basic approach for now.
cmlenz
parents: 34
diff changeset
613 month_idx = format.index('l')
a22b7656e9ae Started implementation of datetime parsing, using a very basic approach for now.
cmlenz
parents: 34
diff changeset
614 day_idx = format.index('d')
a22b7656e9ae Started implementation of datetime parsing, using a very basic approach for now.
cmlenz
parents: 34
diff changeset
615
a22b7656e9ae Started implementation of datetime parsing, using a very basic approach for now.
cmlenz
parents: 34
diff changeset
616 indexes = [(year_idx, 'Y'), (month_idx, 'M'), (day_idx, 'D')]
a22b7656e9ae Started implementation of datetime parsing, using a very basic approach for now.
cmlenz
parents: 34
diff changeset
617 indexes.sort()
a22b7656e9ae Started implementation of datetime parsing, using a very basic approach for now.
cmlenz
parents: 34
diff changeset
618 indexes = dict([(item[1], idx) for idx, item in enumerate(indexes)])
a22b7656e9ae Started implementation of datetime parsing, using a very basic approach for now.
cmlenz
parents: 34
diff changeset
619
a22b7656e9ae Started implementation of datetime parsing, using a very basic approach for now.
cmlenz
parents: 34
diff changeset
620 # FIXME: this currently only supports numbers, but should also support month
a22b7656e9ae Started implementation of datetime parsing, using a very basic approach for now.
cmlenz
parents: 34
diff changeset
621 # names, both in the requested locale, and english
a22b7656e9ae Started implementation of datetime parsing, using a very basic approach for now.
cmlenz
parents: 34
diff changeset
622
a22b7656e9ae Started implementation of datetime parsing, using a very basic approach for now.
cmlenz
parents: 34
diff changeset
623 numbers = re.findall('(\d+)', string)
a22b7656e9ae Started implementation of datetime parsing, using a very basic approach for now.
cmlenz
parents: 34
diff changeset
624 year = numbers[indexes['Y']]
a22b7656e9ae Started implementation of datetime parsing, using a very basic approach for now.
cmlenz
parents: 34
diff changeset
625 if len(year) == 2:
a22b7656e9ae Started implementation of datetime parsing, using a very basic approach for now.
cmlenz
parents: 34
diff changeset
626 year = 2000 + int(year)
a22b7656e9ae Started implementation of datetime parsing, using a very basic approach for now.
cmlenz
parents: 34
diff changeset
627 else:
a22b7656e9ae Started implementation of datetime parsing, using a very basic approach for now.
cmlenz
parents: 34
diff changeset
628 year = int(year)
a22b7656e9ae Started implementation of datetime parsing, using a very basic approach for now.
cmlenz
parents: 34
diff changeset
629 month = int(numbers[indexes['M']])
a22b7656e9ae Started implementation of datetime parsing, using a very basic approach for now.
cmlenz
parents: 34
diff changeset
630 day = int(numbers[indexes['D']])
a22b7656e9ae Started implementation of datetime parsing, using a very basic approach for now.
cmlenz
parents: 34
diff changeset
631 if month > 12:
a22b7656e9ae Started implementation of datetime parsing, using a very basic approach for now.
cmlenz
parents: 34
diff changeset
632 month, day = day, month
a22b7656e9ae Started implementation of datetime parsing, using a very basic approach for now.
cmlenz
parents: 34
diff changeset
633 return date(year, month, day)
1
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
634
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
635 def parse_datetime(string, locale=LC_TIME):
46
306445fbd3ea Minor docstring fixes.
cmlenz
parents: 39
diff changeset
636 """Parse a date and time from a string.
306445fbd3ea Minor docstring fixes.
cmlenz
parents: 39
diff changeset
637
306445fbd3ea Minor docstring fixes.
cmlenz
parents: 39
diff changeset
638 This function uses the date and time formats for the locale as a hint to
306445fbd3ea Minor docstring fixes.
cmlenz
parents: 39
diff changeset
639 determine the order in which the time fields appear in the string.
306445fbd3ea Minor docstring fixes.
cmlenz
parents: 39
diff changeset
640
306445fbd3ea Minor docstring fixes.
cmlenz
parents: 39
diff changeset
641 :param string: the string containing the date and time
306445fbd3ea Minor docstring fixes.
cmlenz
parents: 39
diff changeset
642 :param locale: a `Locale` object or a locale identifier
306445fbd3ea Minor docstring fixes.
cmlenz
parents: 39
diff changeset
643 :return: the parsed date/time
306445fbd3ea Minor docstring fixes.
cmlenz
parents: 39
diff changeset
644 :rtype: `datetime`
306445fbd3ea Minor docstring fixes.
cmlenz
parents: 39
diff changeset
645 """
1
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
646 raise NotImplementedError
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
647
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
648 def parse_time(string, locale=LC_TIME):
46
306445fbd3ea Minor docstring fixes.
cmlenz
parents: 39
diff changeset
649 """Parse a time from a string.
38
a22b7656e9ae Started implementation of datetime parsing, using a very basic approach for now.
cmlenz
parents: 34
diff changeset
650
a22b7656e9ae Started implementation of datetime parsing, using a very basic approach for now.
cmlenz
parents: 34
diff changeset
651 This function uses the time format for the locale as a hint to determine
a22b7656e9ae Started implementation of datetime parsing, using a very basic approach for now.
cmlenz
parents: 34
diff changeset
652 the order in which the time fields appear in the string.
a22b7656e9ae Started implementation of datetime parsing, using a very basic approach for now.
cmlenz
parents: 34
diff changeset
653
a22b7656e9ae Started implementation of datetime parsing, using a very basic approach for now.
cmlenz
parents: 34
diff changeset
654 >>> parse_time('15:30:00', locale='en_US')
a22b7656e9ae Started implementation of datetime parsing, using a very basic approach for now.
cmlenz
parents: 34
diff changeset
655 datetime.time(15, 30)
a22b7656e9ae Started implementation of datetime parsing, using a very basic approach for now.
cmlenz
parents: 34
diff changeset
656
a22b7656e9ae Started implementation of datetime parsing, using a very basic approach for now.
cmlenz
parents: 34
diff changeset
657 :param string: the string containing the time
a22b7656e9ae Started implementation of datetime parsing, using a very basic approach for now.
cmlenz
parents: 34
diff changeset
658 :param locale: a `Locale` object or a locale identifier
a22b7656e9ae Started implementation of datetime parsing, using a very basic approach for now.
cmlenz
parents: 34
diff changeset
659 :return: the parsed time
a22b7656e9ae Started implementation of datetime parsing, using a very basic approach for now.
cmlenz
parents: 34
diff changeset
660 :rtype: `time`
a22b7656e9ae Started implementation of datetime parsing, using a very basic approach for now.
cmlenz
parents: 34
diff changeset
661 """
a22b7656e9ae Started implementation of datetime parsing, using a very basic approach for now.
cmlenz
parents: 34
diff changeset
662 # TODO: try ISO format first?
a22b7656e9ae Started implementation of datetime parsing, using a very basic approach for now.
cmlenz
parents: 34
diff changeset
663 format = get_time_format(locale=locale).pattern.lower()
a22b7656e9ae Started implementation of datetime parsing, using a very basic approach for now.
cmlenz
parents: 34
diff changeset
664 hour_idx = format.index('h')
a22b7656e9ae Started implementation of datetime parsing, using a very basic approach for now.
cmlenz
parents: 34
diff changeset
665 if hour_idx < 0:
a22b7656e9ae Started implementation of datetime parsing, using a very basic approach for now.
cmlenz
parents: 34
diff changeset
666 hour_idx = format.index('k')
a22b7656e9ae Started implementation of datetime parsing, using a very basic approach for now.
cmlenz
parents: 34
diff changeset
667 min_idx = format.index('m')
a22b7656e9ae Started implementation of datetime parsing, using a very basic approach for now.
cmlenz
parents: 34
diff changeset
668 sec_idx = format.index('s')
a22b7656e9ae Started implementation of datetime parsing, using a very basic approach for now.
cmlenz
parents: 34
diff changeset
669
a22b7656e9ae Started implementation of datetime parsing, using a very basic approach for now.
cmlenz
parents: 34
diff changeset
670 indexes = [(hour_idx, 'H'), (min_idx, 'M'), (sec_idx, 'S')]
a22b7656e9ae Started implementation of datetime parsing, using a very basic approach for now.
cmlenz
parents: 34
diff changeset
671 indexes.sort()
a22b7656e9ae Started implementation of datetime parsing, using a very basic approach for now.
cmlenz
parents: 34
diff changeset
672 indexes = dict([(item[1], idx) for idx, item in enumerate(indexes)])
a22b7656e9ae Started implementation of datetime parsing, using a very basic approach for now.
cmlenz
parents: 34
diff changeset
673
a22b7656e9ae Started implementation of datetime parsing, using a very basic approach for now.
cmlenz
parents: 34
diff changeset
674 # FIXME: support 12 hour clock, and 0-based hour specification
46
306445fbd3ea Minor docstring fixes.
cmlenz
parents: 39
diff changeset
675 # and seconds should be optional, maybe minutes too
306445fbd3ea Minor docstring fixes.
cmlenz
parents: 39
diff changeset
676 # oh, and time-zones, of course
38
a22b7656e9ae Started implementation of datetime parsing, using a very basic approach for now.
cmlenz
parents: 34
diff changeset
677
a22b7656e9ae Started implementation of datetime parsing, using a very basic approach for now.
cmlenz
parents: 34
diff changeset
678 numbers = re.findall('(\d+)', string)
a22b7656e9ae Started implementation of datetime parsing, using a very basic approach for now.
cmlenz
parents: 34
diff changeset
679 hour = int(numbers[indexes['H']])
a22b7656e9ae Started implementation of datetime parsing, using a very basic approach for now.
cmlenz
parents: 34
diff changeset
680 minute = int(numbers[indexes['M']])
a22b7656e9ae Started implementation of datetime parsing, using a very basic approach for now.
cmlenz
parents: 34
diff changeset
681 second = int(numbers[indexes['S']])
a22b7656e9ae Started implementation of datetime parsing, using a very basic approach for now.
cmlenz
parents: 34
diff changeset
682 return time(hour, minute, second)
1
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
683
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
684
12
a2c54ef107c2 * Removed pkg_resources/setuptools requirement from various places.
cmlenz
parents: 8
diff changeset
685 class DateTimePattern(object):
1
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
686
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
687 def __init__(self, pattern, format):
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
688 self.pattern = pattern
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
689 self.format = format
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
690
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
691 def __repr__(self):
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
692 return '<%s %r>' % (type(self).__name__, self.pattern)
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
693
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
694 def __unicode__(self):
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
695 return self.pattern
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
696
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
697 def __mod__(self, other):
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
698 assert type(other) is DateTimeFormat
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
699 return self.format % other
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
700
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
701 def apply(self, datetime, locale):
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
702 return self % DateTimeFormat(datetime, locale)
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
703
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
704
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
705 class DateTimeFormat(object):
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
706
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
707 def __init__(self, value, locale):
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
708 assert isinstance(value, (date, datetime, time))
29
da1c9610e751 More work on timezones.
cmlenz
parents: 19
diff changeset
709 if isinstance(value, (datetime, time)) and value.tzinfo is None:
da1c9610e751 More work on timezones.
cmlenz
parents: 19
diff changeset
710 value = value.replace(tzinfo=UTC)
1
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
711 self.value = value
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
712 self.locale = Locale.parse(locale)
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
713
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
714 def __getitem__(self, name):
15
76985c08a339 Minor date formatting improvements.
cmlenz
parents: 12
diff changeset
715 char = name[0]
76985c08a339 Minor date formatting improvements.
cmlenz
parents: 12
diff changeset
716 num = len(name)
76985c08a339 Minor date formatting improvements.
cmlenz
parents: 12
diff changeset
717 if char == 'G':
76985c08a339 Minor date formatting improvements.
cmlenz
parents: 12
diff changeset
718 return self.format_era(char, num)
215
d37628e752c4 Dummy/stub implementation for week-in-year and week-in-month date format fields. Also, treat extended year the same as the regular year field, not even ICU seems to handle it specially.
cmlenz
parents: 129
diff changeset
719 elif char in ('y', 'Y', 'u'):
15
76985c08a339 Minor date formatting improvements.
cmlenz
parents: 12
diff changeset
720 return self.format_year(char, num)
76985c08a339 Minor date formatting improvements.
cmlenz
parents: 12
diff changeset
721 elif char in ('Q', 'q'):
76985c08a339 Minor date formatting improvements.
cmlenz
parents: 12
diff changeset
722 return self.format_quarter(char, num)
76985c08a339 Minor date formatting improvements.
cmlenz
parents: 12
diff changeset
723 elif char in ('M', 'L'):
76985c08a339 Minor date formatting improvements.
cmlenz
parents: 12
diff changeset
724 return self.format_month(char, num)
215
d37628e752c4 Dummy/stub implementation for week-in-year and week-in-month date format fields. Also, treat extended year the same as the regular year field, not even ICU seems to handle it specially.
cmlenz
parents: 129
diff changeset
725 elif char in ('w', 'W'):
d37628e752c4 Dummy/stub implementation for week-in-year and week-in-month date format fields. Also, treat extended year the same as the regular year field, not even ICU seems to handle it specially.
cmlenz
parents: 129
diff changeset
726 return self.format_week(char, num)
15
76985c08a339 Minor date formatting improvements.
cmlenz
parents: 12
diff changeset
727 elif char == 'd':
76985c08a339 Minor date formatting improvements.
cmlenz
parents: 12
diff changeset
728 return self.format(self.value.day, num)
221
898b9450f274 Implement day-of-year date format field. Closes #49.
cmlenz
parents: 217
diff changeset
729 elif char == 'D':
898b9450f274 Implement day-of-year date format field. Closes #49.
cmlenz
parents: 217
diff changeset
730 return self.format_day_of_year(num)
241
9fedbb6f9871 Implement day-of-week-in-month field in date formatting. Closes #50.
cmlenz
parents: 240
diff changeset
731 elif char == 'F':
9fedbb6f9871 Implement day-of-week-in-month field in date formatting. Closes #50.
cmlenz
parents: 240
diff changeset
732 return self.format_day_of_week_in_month()
15
76985c08a339 Minor date formatting improvements.
cmlenz
parents: 12
diff changeset
733 elif char in ('E', 'e', 'c'):
76985c08a339 Minor date formatting improvements.
cmlenz
parents: 12
diff changeset
734 return self.format_weekday(char, num)
76985c08a339 Minor date formatting improvements.
cmlenz
parents: 12
diff changeset
735 elif char == 'a':
76985c08a339 Minor date formatting improvements.
cmlenz
parents: 12
diff changeset
736 return self.format_period(char)
76985c08a339 Minor date formatting improvements.
cmlenz
parents: 12
diff changeset
737 elif char == 'h':
276
e4dc98533a26 Merged [301:303] from [source:trunk] via svnmerge.
cmlenz
parents: 256
diff changeset
738 if self.value.hour % 12 == 0:
e4dc98533a26 Merged [301:303] from [source:trunk] via svnmerge.
cmlenz
parents: 256
diff changeset
739 return self.format(12, num)
e4dc98533a26 Merged [301:303] from [source:trunk] via svnmerge.
cmlenz
parents: 256
diff changeset
740 else:
e4dc98533a26 Merged [301:303] from [source:trunk] via svnmerge.
cmlenz
parents: 256
diff changeset
741 return self.format(self.value.hour % 12, num)
15
76985c08a339 Minor date formatting improvements.
cmlenz
parents: 12
diff changeset
742 elif char == 'H':
76985c08a339 Minor date formatting improvements.
cmlenz
parents: 12
diff changeset
743 return self.format(self.value.hour, num)
18
77a68f88f6bc Started documentation for date formatting, plus some code tweaks in that area.
cmlenz
parents: 16
diff changeset
744 elif char == 'K':
276
e4dc98533a26 Merged [301:303] from [source:trunk] via svnmerge.
cmlenz
parents: 256
diff changeset
745 return self.format(self.value.hour % 12, num)
18
77a68f88f6bc Started documentation for date formatting, plus some code tweaks in that area.
cmlenz
parents: 16
diff changeset
746 elif char == 'k':
276
e4dc98533a26 Merged [301:303] from [source:trunk] via svnmerge.
cmlenz
parents: 256
diff changeset
747 if self.value.hour == 0:
e4dc98533a26 Merged [301:303] from [source:trunk] via svnmerge.
cmlenz
parents: 256
diff changeset
748 return self.format(24, num)
e4dc98533a26 Merged [301:303] from [source:trunk] via svnmerge.
cmlenz
parents: 256
diff changeset
749 else:
e4dc98533a26 Merged [301:303] from [source:trunk] via svnmerge.
cmlenz
parents: 256
diff changeset
750 return self.format(self.value.hour, num)
15
76985c08a339 Minor date formatting improvements.
cmlenz
parents: 12
diff changeset
751 elif char == 'm':
76985c08a339 Minor date formatting improvements.
cmlenz
parents: 12
diff changeset
752 return self.format(self.value.minute, num)
76985c08a339 Minor date formatting improvements.
cmlenz
parents: 12
diff changeset
753 elif char == 's':
76985c08a339 Minor date formatting improvements.
cmlenz
parents: 12
diff changeset
754 return self.format(self.value.second, num)
216
1f3c3924b1b5 Support for fractional seconds field in date formatting. Closes #47.
cmlenz
parents: 215
diff changeset
755 elif char == 'S':
217
4de6f4604830 Implement milliseconds in day (#48).
cmlenz
parents: 216
diff changeset
756 return self.format_frac_seconds(num)
4de6f4604830 Implement milliseconds in day (#48).
cmlenz
parents: 216
diff changeset
757 elif char == 'A':
4de6f4604830 Implement milliseconds in day (#48).
cmlenz
parents: 216
diff changeset
758 return self.format_milliseconds_in_day(num)
233
bc22f5aef216 Upgraded to CLDR 1.5 and improved timezone formatting.
cmlenz
parents: 221
diff changeset
759 elif char in ('z', 'Z', 'v', 'V'):
29
da1c9610e751 More work on timezones.
cmlenz
parents: 19
diff changeset
760 return self.format_timezone(char, num)
1
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
761 else:
15
76985c08a339 Minor date formatting improvements.
cmlenz
parents: 12
diff changeset
762 raise KeyError('Unsupported date/time field %r' % char)
1
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
763
15
76985c08a339 Minor date formatting improvements.
cmlenz
parents: 12
diff changeset
764 def format_era(self, char, num):
1
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
765 width = {3: 'abbreviated', 4: 'wide', 5: 'narrow'}[max(3, num)]
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
766 era = int(self.value.year >= 0)
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
767 return get_era_names(width, self.locale)[era]
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
768
15
76985c08a339 Minor date formatting improvements.
cmlenz
parents: 12
diff changeset
769 def format_year(self, char, num):
242
059b74719f6b Finish implementation of day-of-year and day-of-month for now, and fix implementation of year-of-week-of-year field. Closes #46. I suspect there are still cases not entirely covered by this implementation, but those can be filed as separate tickets.
cmlenz
parents: 241
diff changeset
770 value = self.value.year
059b74719f6b Finish implementation of day-of-year and day-of-month for now, and fix implementation of year-of-week-of-year field. Closes #46. I suspect there are still cases not entirely covered by this implementation, but those can be filed as separate tickets.
cmlenz
parents: 241
diff changeset
771 if char.isupper():
059b74719f6b Finish implementation of day-of-year and day-of-month for now, and fix implementation of year-of-week-of-year field. Closes #46. I suspect there are still cases not entirely covered by this implementation, but those can be filed as separate tickets.
cmlenz
parents: 241
diff changeset
772 week = self.get_week_number(self.get_day_of_year())
059b74719f6b Finish implementation of day-of-year and day-of-month for now, and fix implementation of year-of-week-of-year field. Closes #46. I suspect there are still cases not entirely covered by this implementation, but those can be filed as separate tickets.
cmlenz
parents: 241
diff changeset
773 if week == 0:
059b74719f6b Finish implementation of day-of-year and day-of-month for now, and fix implementation of year-of-week-of-year field. Closes #46. I suspect there are still cases not entirely covered by this implementation, but those can be filed as separate tickets.
cmlenz
parents: 241
diff changeset
774 value -= 1
1
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
775 year = self.format(value, num)
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
776 if num == 2:
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
777 year = year[-2:]
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
778 return year
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
779
397
61cb2233fa49 Ported [436] to 0.9.x branch.
cmlenz
parents: 379
diff changeset
780 def format_quarter(self, char, num):
61cb2233fa49 Ported [436] to 0.9.x branch.
cmlenz
parents: 379
diff changeset
781 quarter = (self.value.month - 1) // 3 + 1
61cb2233fa49 Ported [436] to 0.9.x branch.
cmlenz
parents: 379
diff changeset
782 if num <= 2:
61cb2233fa49 Ported [436] to 0.9.x branch.
cmlenz
parents: 379
diff changeset
783 return ('%%0%dd' % num) % quarter
61cb2233fa49 Ported [436] to 0.9.x branch.
cmlenz
parents: 379
diff changeset
784 width = {3: 'abbreviated', 4: 'wide', 5: 'narrow'}[num]
61cb2233fa49 Ported [436] to 0.9.x branch.
cmlenz
parents: 379
diff changeset
785 context = {'Q': 'format', 'q': 'stand-alone'}[char]
61cb2233fa49 Ported [436] to 0.9.x branch.
cmlenz
parents: 379
diff changeset
786 return get_quarter_names(width, context, self.locale)[quarter]
61cb2233fa49 Ported [436] to 0.9.x branch.
cmlenz
parents: 379
diff changeset
787
15
76985c08a339 Minor date formatting improvements.
cmlenz
parents: 12
diff changeset
788 def format_month(self, char, num):
1
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
789 if num <= 2:
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
790 return ('%%0%dd' % num) % self.value.month
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
791 width = {3: 'abbreviated', 4: 'wide', 5: 'narrow'}[num]
346
faf0ead3a132 Merged revisions [358:360], [364:370], [373:378], [380:382] from [source:trunk].
cmlenz
parents: 276
diff changeset
792 context = {'M': 'format', 'L': 'stand-alone'}[char]
1
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
793 return get_month_names(width, context, self.locale)[self.value.month]
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
794
215
d37628e752c4 Dummy/stub implementation for week-in-year and week-in-month date format fields. Also, treat extended year the same as the regular year field, not even ICU seems to handle it specially.
cmlenz
parents: 129
diff changeset
795 def format_week(self, char, num):
239
4afe02d81083 Again, properly implement week-in-year (#46).
cmlenz
parents: 238
diff changeset
796 if char.islower(): # week of year
242
059b74719f6b Finish implementation of day-of-year and day-of-month for now, and fix implementation of year-of-week-of-year field. Closes #46. I suspect there are still cases not entirely covered by this implementation, but those can be filed as separate tickets.
cmlenz
parents: 241
diff changeset
797 day_of_year = self.get_day_of_year()
059b74719f6b Finish implementation of day-of-year and day-of-month for now, and fix implementation of year-of-week-of-year field. Closes #46. I suspect there are still cases not entirely covered by this implementation, but those can be filed as separate tickets.
cmlenz
parents: 241
diff changeset
798 week = self.get_week_number(day_of_year)
240
e47245bf65b3 More work on #46 (week-of-year/week-of-month).
cmlenz
parents: 239
diff changeset
799 if week == 0:
242
059b74719f6b Finish implementation of day-of-year and day-of-month for now, and fix implementation of year-of-week-of-year field. Closes #46. I suspect there are still cases not entirely covered by this implementation, but those can be filed as separate tickets.
cmlenz
parents: 241
diff changeset
800 date = self.value - timedelta(days=day_of_year)
059b74719f6b Finish implementation of day-of-year and day-of-month for now, and fix implementation of year-of-week-of-year field. Closes #46. I suspect there are still cases not entirely covered by this implementation, but those can be filed as separate tickets.
cmlenz
parents: 241
diff changeset
801 week = self.get_week_number(self.get_day_of_year(date),
059b74719f6b Finish implementation of day-of-year and day-of-month for now, and fix implementation of year-of-week-of-year field. Closes #46. I suspect there are still cases not entirely covered by this implementation, but those can be filed as separate tickets.
cmlenz
parents: 241
diff changeset
802 date.weekday())
240
e47245bf65b3 More work on #46 (week-of-year/week-of-month).
cmlenz
parents: 239
diff changeset
803 return self.format(week, num)
239
4afe02d81083 Again, properly implement week-in-year (#46).
cmlenz
parents: 238
diff changeset
804 else: # week of month
240
e47245bf65b3 More work on #46 (week-of-year/week-of-month).
cmlenz
parents: 239
diff changeset
805 week = self.get_week_number(self.value.day)
e47245bf65b3 More work on #46 (week-of-year/week-of-month).
cmlenz
parents: 239
diff changeset
806 if week == 0:
242
059b74719f6b Finish implementation of day-of-year and day-of-month for now, and fix implementation of year-of-week-of-year field. Closes #46. I suspect there are still cases not entirely covered by this implementation, but those can be filed as separate tickets.
cmlenz
parents: 241
diff changeset
807 date = self.value - timedelta(days=self.value.day)
059b74719f6b Finish implementation of day-of-year and day-of-month for now, and fix implementation of year-of-week-of-year field. Closes #46. I suspect there are still cases not entirely covered by this implementation, but those can be filed as separate tickets.
cmlenz
parents: 241
diff changeset
808 week = self.get_week_number(date.day, date.weekday())
240
e47245bf65b3 More work on #46 (week-of-year/week-of-month).
cmlenz
parents: 239
diff changeset
809 pass
e47245bf65b3 More work on #46 (week-of-year/week-of-month).
cmlenz
parents: 239
diff changeset
810 return '%d' % week
215
d37628e752c4 Dummy/stub implementation for week-in-year and week-in-month date format fields. Also, treat extended year the same as the regular year field, not even ICU seems to handle it specially.
cmlenz
parents: 129
diff changeset
811
15
76985c08a339 Minor date formatting improvements.
cmlenz
parents: 12
diff changeset
812 def format_weekday(self, char, num):
76985c08a339 Minor date formatting improvements.
cmlenz
parents: 12
diff changeset
813 if num < 3:
76985c08a339 Minor date formatting improvements.
cmlenz
parents: 12
diff changeset
814 if char.islower():
76985c08a339 Minor date formatting improvements.
cmlenz
parents: 12
diff changeset
815 value = 7 - self.locale.first_week_day + self.value.weekday()
76985c08a339 Minor date formatting improvements.
cmlenz
parents: 12
diff changeset
816 return self.format(value % 7 + 1, num)
76985c08a339 Minor date formatting improvements.
cmlenz
parents: 12
diff changeset
817 num = 3
76985c08a339 Minor date formatting improvements.
cmlenz
parents: 12
diff changeset
818 weekday = self.value.weekday()
76985c08a339 Minor date formatting improvements.
cmlenz
parents: 12
diff changeset
819 width = {3: 'abbreviated', 4: 'wide', 5: 'narrow'}[num]
76985c08a339 Minor date formatting improvements.
cmlenz
parents: 12
diff changeset
820 context = {3: 'format', 4: 'format', 5: 'stand-alone'}[num]
1
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
821 return get_day_names(width, context, self.locale)[weekday]
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
822
221
898b9450f274 Implement day-of-year date format field. Closes #49.
cmlenz
parents: 217
diff changeset
823 def format_day_of_year(self, num):
239
4afe02d81083 Again, properly implement week-in-year (#46).
cmlenz
parents: 238
diff changeset
824 return self.format(self.get_day_of_year(), num)
221
898b9450f274 Implement day-of-year date format field. Closes #49.
cmlenz
parents: 217
diff changeset
825
241
9fedbb6f9871 Implement day-of-week-in-month field in date formatting. Closes #50.
cmlenz
parents: 240
diff changeset
826 def format_day_of_week_in_month(self):
9fedbb6f9871 Implement day-of-week-in-month field in date formatting. Closes #50.
cmlenz
parents: 240
diff changeset
827 return '%d' % ((self.value.day - 1) / 7 + 1)
9fedbb6f9871 Implement day-of-week-in-month field in date formatting. Closes #50.
cmlenz
parents: 240
diff changeset
828
15
76985c08a339 Minor date formatting improvements.
cmlenz
parents: 12
diff changeset
829 def format_period(self, char):
276
e4dc98533a26 Merged [301:303] from [source:trunk] via svnmerge.
cmlenz
parents: 256
diff changeset
830 period = {0: 'am', 1: 'pm'}[int(self.value.hour >= 12)]
1
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
831 return get_period_names(locale=self.locale)[period]
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
832
217
4de6f4604830 Implement milliseconds in day (#48).
cmlenz
parents: 216
diff changeset
833 def format_frac_seconds(self, num):
216
1f3c3924b1b5 Support for fractional seconds field in date formatting. Closes #47.
cmlenz
parents: 215
diff changeset
834 value = str(self.value.microsecond)
1f3c3924b1b5 Support for fractional seconds field in date formatting. Closes #47.
cmlenz
parents: 215
diff changeset
835 return self.format(round(float('.%s' % value), num) * 10**num, num)
1f3c3924b1b5 Support for fractional seconds field in date formatting. Closes #47.
cmlenz
parents: 215
diff changeset
836
217
4de6f4604830 Implement milliseconds in day (#48).
cmlenz
parents: 216
diff changeset
837 def format_milliseconds_in_day(self, num):
4de6f4604830 Implement milliseconds in day (#48).
cmlenz
parents: 216
diff changeset
838 msecs = self.value.microsecond // 1000 + self.value.second * 1000 + \
4de6f4604830 Implement milliseconds in day (#48).
cmlenz
parents: 216
diff changeset
839 self.value.minute * 60000 + self.value.hour * 3600000
4de6f4604830 Implement milliseconds in day (#48).
cmlenz
parents: 216
diff changeset
840 return self.format(msecs, num)
4de6f4604830 Implement milliseconds in day (#48).
cmlenz
parents: 216
diff changeset
841
29
da1c9610e751 More work on timezones.
cmlenz
parents: 19
diff changeset
842 def format_timezone(self, char, num):
233
bc22f5aef216 Upgraded to CLDR 1.5 and improved timezone formatting.
cmlenz
parents: 221
diff changeset
843 width = {3: 'short', 4: 'long'}[max(3, num)]
bc22f5aef216 Upgraded to CLDR 1.5 and improved timezone formatting.
cmlenz
parents: 221
diff changeset
844 if char == 'z':
bc22f5aef216 Upgraded to CLDR 1.5 and improved timezone formatting.
cmlenz
parents: 221
diff changeset
845 return get_timezone_name(self.value, width, locale=self.locale)
29
da1c9610e751 More work on timezones.
cmlenz
parents: 19
diff changeset
846 elif char == 'Z':
247
f3fbecf951b0 `get_timezone_gmt()` wasn't getting the locale passed in all cases, which led to test errors when the default locale wasn't configured via environment variables.
cmlenz
parents: 242
diff changeset
847 return get_timezone_gmt(self.value, width, locale=self.locale)
233
bc22f5aef216 Upgraded to CLDR 1.5 and improved timezone formatting.
cmlenz
parents: 221
diff changeset
848 elif char == 'v':
bc22f5aef216 Upgraded to CLDR 1.5 and improved timezone formatting.
cmlenz
parents: 221
diff changeset
849 return get_timezone_name(self.value.tzinfo, width,
bc22f5aef216 Upgraded to CLDR 1.5 and improved timezone formatting.
cmlenz
parents: 221
diff changeset
850 locale=self.locale)
bc22f5aef216 Upgraded to CLDR 1.5 and improved timezone formatting.
cmlenz
parents: 221
diff changeset
851 elif char == 'V':
bc22f5aef216 Upgraded to CLDR 1.5 and improved timezone formatting.
cmlenz
parents: 221
diff changeset
852 if num == 1:
bc22f5aef216 Upgraded to CLDR 1.5 and improved timezone formatting.
cmlenz
parents: 221
diff changeset
853 return get_timezone_name(self.value.tzinfo, width,
bc22f5aef216 Upgraded to CLDR 1.5 and improved timezone formatting.
cmlenz
parents: 221
diff changeset
854 uncommon=True, locale=self.locale)
bc22f5aef216 Upgraded to CLDR 1.5 and improved timezone formatting.
cmlenz
parents: 221
diff changeset
855 return get_timezone_location(self.value.tzinfo, locale=self.locale)
29
da1c9610e751 More work on timezones.
cmlenz
parents: 19
diff changeset
856
1
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
857 def format(self, value, length):
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
858 return ('%%0%dd' % length) % value
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
859
242
059b74719f6b Finish implementation of day-of-year and day-of-month for now, and fix implementation of year-of-week-of-year field. Closes #46. I suspect there are still cases not entirely covered by this implementation, but those can be filed as separate tickets.
cmlenz
parents: 241
diff changeset
860 def get_day_of_year(self, date=None):
059b74719f6b Finish implementation of day-of-year and day-of-month for now, and fix implementation of year-of-week-of-year field. Closes #46. I suspect there are still cases not entirely covered by this implementation, but those can be filed as separate tickets.
cmlenz
parents: 241
diff changeset
861 if date is None:
059b74719f6b Finish implementation of day-of-year and day-of-month for now, and fix implementation of year-of-week-of-year field. Closes #46. I suspect there are still cases not entirely covered by this implementation, but those can be filed as separate tickets.
cmlenz
parents: 241
diff changeset
862 date = self.value
059b74719f6b Finish implementation of day-of-year and day-of-month for now, and fix implementation of year-of-week-of-year field. Closes #46. I suspect there are still cases not entirely covered by this implementation, but those can be filed as separate tickets.
cmlenz
parents: 241
diff changeset
863 return (date - date_(date.year, 1, 1)).days + 1
239
4afe02d81083 Again, properly implement week-in-year (#46).
cmlenz
parents: 238
diff changeset
864
242
059b74719f6b Finish implementation of day-of-year and day-of-month for now, and fix implementation of year-of-week-of-year field. Closes #46. I suspect there are still cases not entirely covered by this implementation, but those can be filed as separate tickets.
cmlenz
parents: 241
diff changeset
865 def get_week_number(self, day_of_period, day_of_week=None):
239
4afe02d81083 Again, properly implement week-in-year (#46).
cmlenz
parents: 238
diff changeset
866 """Return the number of the week of a day within a period. This may be
4afe02d81083 Again, properly implement week-in-year (#46).
cmlenz
parents: 238
diff changeset
867 the week number in a year or the week number in a month.
4afe02d81083 Again, properly implement week-in-year (#46).
cmlenz
parents: 238
diff changeset
868
4afe02d81083 Again, properly implement week-in-year (#46).
cmlenz
parents: 238
diff changeset
869 Usually this will return a value equal to or greater than 1, but if the
4afe02d81083 Again, properly implement week-in-year (#46).
cmlenz
parents: 238
diff changeset
870 first week of the period is so short that it actually counts as the last
4afe02d81083 Again, properly implement week-in-year (#46).
cmlenz
parents: 238
diff changeset
871 week of the previous period, this function will return 0.
4afe02d81083 Again, properly implement week-in-year (#46).
cmlenz
parents: 238
diff changeset
872
4afe02d81083 Again, properly implement week-in-year (#46).
cmlenz
parents: 238
diff changeset
873 >>> format = DateTimeFormat(date(2006, 1, 8), Locale.parse('de_DE'))
4afe02d81083 Again, properly implement week-in-year (#46).
cmlenz
parents: 238
diff changeset
874 >>> format.get_week_number(6)
4afe02d81083 Again, properly implement week-in-year (#46).
cmlenz
parents: 238
diff changeset
875 1
4afe02d81083 Again, properly implement week-in-year (#46).
cmlenz
parents: 238
diff changeset
876
4afe02d81083 Again, properly implement week-in-year (#46).
cmlenz
parents: 238
diff changeset
877 >>> format = DateTimeFormat(date(2006, 1, 8), Locale.parse('en_US'))
4afe02d81083 Again, properly implement week-in-year (#46).
cmlenz
parents: 238
diff changeset
878 >>> format.get_week_number(6)
4afe02d81083 Again, properly implement week-in-year (#46).
cmlenz
parents: 238
diff changeset
879 2
4afe02d81083 Again, properly implement week-in-year (#46).
cmlenz
parents: 238
diff changeset
880
4afe02d81083 Again, properly implement week-in-year (#46).
cmlenz
parents: 238
diff changeset
881 :param day_of_period: the number of the day in the period (usually
4afe02d81083 Again, properly implement week-in-year (#46).
cmlenz
parents: 238
diff changeset
882 either the day of month or the day of year)
242
059b74719f6b Finish implementation of day-of-year and day-of-month for now, and fix implementation of year-of-week-of-year field. Closes #46. I suspect there are still cases not entirely covered by this implementation, but those can be filed as separate tickets.
cmlenz
parents: 241
diff changeset
883 :param day_of_week: the week day; if ommitted, the week day of the
059b74719f6b Finish implementation of day-of-year and day-of-month for now, and fix implementation of year-of-week-of-year field. Closes #46. I suspect there are still cases not entirely covered by this implementation, but those can be filed as separate tickets.
cmlenz
parents: 241
diff changeset
884 current date is assumed
239
4afe02d81083 Again, properly implement week-in-year (#46).
cmlenz
parents: 238
diff changeset
885 """
242
059b74719f6b Finish implementation of day-of-year and day-of-month for now, and fix implementation of year-of-week-of-year field. Closes #46. I suspect there are still cases not entirely covered by this implementation, but those can be filed as separate tickets.
cmlenz
parents: 241
diff changeset
886 if day_of_week is None:
059b74719f6b Finish implementation of day-of-year and day-of-month for now, and fix implementation of year-of-week-of-year field. Closes #46. I suspect there are still cases not entirely covered by this implementation, but those can be filed as separate tickets.
cmlenz
parents: 241
diff changeset
887 day_of_week = self.value.weekday()
059b74719f6b Finish implementation of day-of-year and day-of-month for now, and fix implementation of year-of-week-of-year field. Closes #46. I suspect there are still cases not entirely covered by this implementation, but those can be filed as separate tickets.
cmlenz
parents: 241
diff changeset
888 first_day = (day_of_week - self.locale.first_week_day -
239
4afe02d81083 Again, properly implement week-in-year (#46).
cmlenz
parents: 238
diff changeset
889 day_of_period + 1) % 7
4afe02d81083 Again, properly implement week-in-year (#46).
cmlenz
parents: 238
diff changeset
890 if first_day < 0:
4afe02d81083 Again, properly implement week-in-year (#46).
cmlenz
parents: 238
diff changeset
891 first_day += 7
4afe02d81083 Again, properly implement week-in-year (#46).
cmlenz
parents: 238
diff changeset
892 week_number = (day_of_period + first_day - 1) / 7
4afe02d81083 Again, properly implement week-in-year (#46).
cmlenz
parents: 238
diff changeset
893 if 7 - first_day >= self.locale.min_week_days:
4afe02d81083 Again, properly implement week-in-year (#46).
cmlenz
parents: 238
diff changeset
894 week_number += 1
4afe02d81083 Again, properly implement week-in-year (#46).
cmlenz
parents: 238
diff changeset
895 return week_number
4afe02d81083 Again, properly implement week-in-year (#46).
cmlenz
parents: 238
diff changeset
896
1
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
897
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
898 PATTERN_CHARS = {
15
76985c08a339 Minor date formatting improvements.
cmlenz
parents: 12
diff changeset
899 'G': [1, 2, 3, 4, 5], # era
76985c08a339 Minor date formatting improvements.
cmlenz
parents: 12
diff changeset
900 'y': None, 'Y': None, 'u': None, # year
76985c08a339 Minor date formatting improvements.
cmlenz
parents: 12
diff changeset
901 'Q': [1, 2, 3, 4], 'q': [1, 2, 3, 4], # quarter
76985c08a339 Minor date formatting improvements.
cmlenz
parents: 12
diff changeset
902 'M': [1, 2, 3, 4, 5], 'L': [1, 2, 3, 4, 5], # month
76985c08a339 Minor date formatting improvements.
cmlenz
parents: 12
diff changeset
903 'w': [1, 2], 'W': [1], # week
76985c08a339 Minor date formatting improvements.
cmlenz
parents: 12
diff changeset
904 'd': [1, 2], 'D': [1, 2, 3], 'F': [1], 'g': None, # day
76985c08a339 Minor date formatting improvements.
cmlenz
parents: 12
diff changeset
905 'E': [1, 2, 3, 4, 5], 'e': [1, 2, 3, 4, 5], 'c': [1, 3, 4, 5], # week day
76985c08a339 Minor date formatting improvements.
cmlenz
parents: 12
diff changeset
906 'a': [1], # period
76985c08a339 Minor date formatting improvements.
cmlenz
parents: 12
diff changeset
907 'h': [1, 2], 'H': [1, 2], 'K': [1, 2], 'k': [1, 2], # hour
76985c08a339 Minor date formatting improvements.
cmlenz
parents: 12
diff changeset
908 'm': [1, 2], # minute
76985c08a339 Minor date formatting improvements.
cmlenz
parents: 12
diff changeset
909 's': [1, 2], 'S': None, 'A': None, # second
233
bc22f5aef216 Upgraded to CLDR 1.5 and improved timezone formatting.
cmlenz
parents: 221
diff changeset
910 'z': [1, 2, 3, 4], 'Z': [1, 2, 3, 4], 'v': [1, 4], 'V': [1, 4] # zone
1
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
911 }
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
912
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
913 def parse_pattern(pattern):
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
914 """Parse date, time, and datetime format patterns.
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
915
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
916 >>> parse_pattern("MMMMd").format
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
917 u'%(MMMM)s%(d)s'
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
918 >>> parse_pattern("MMM d, yyyy").format
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
919 u'%(MMM)s %(d)s, %(yyyy)s'
16
ed154241c08d Handle escape chars in datetime patterns.
cmlenz
parents: 15
diff changeset
920
ed154241c08d Handle escape chars in datetime patterns.
cmlenz
parents: 15
diff changeset
921 Pattern can contain literal strings in single quotes:
ed154241c08d Handle escape chars in datetime patterns.
cmlenz
parents: 15
diff changeset
922
1
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
923 >>> parse_pattern("H:mm' Uhr 'z").format
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
924 u'%(H)s:%(mm)s Uhr %(z)s'
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
925
16
ed154241c08d Handle escape chars in datetime patterns.
cmlenz
parents: 15
diff changeset
926 An actual single quote can be used by using two adjacent single quote
ed154241c08d Handle escape chars in datetime patterns.
cmlenz
parents: 15
diff changeset
927 characters:
ed154241c08d Handle escape chars in datetime patterns.
cmlenz
parents: 15
diff changeset
928
ed154241c08d Handle escape chars in datetime patterns.
cmlenz
parents: 15
diff changeset
929 >>> parse_pattern("hh' o''clock'").format
ed154241c08d Handle escape chars in datetime patterns.
cmlenz
parents: 15
diff changeset
930 u"%(hh)s o'clock"
ed154241c08d Handle escape chars in datetime patterns.
cmlenz
parents: 15
diff changeset
931
1
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
932 :param pattern: the formatting pattern to parse
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
933 """
12
a2c54ef107c2 * Removed pkg_resources/setuptools requirement from various places.
cmlenz
parents: 8
diff changeset
934 if type(pattern) is DateTimePattern:
1
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
935 return pattern
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
936
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
937 result = []
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
938 quotebuf = None
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
939 charbuf = []
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
940 fieldchar = ['']
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
941 fieldnum = [0]
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
942
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
943 def append_chars():
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
944 result.append(''.join(charbuf).replace('%', '%%'))
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
945 del charbuf[:]
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
946
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
947 def append_field():
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
948 limit = PATTERN_CHARS[fieldchar[0]]
15
76985c08a339 Minor date formatting improvements.
cmlenz
parents: 12
diff changeset
949 if limit and fieldnum[0] not in limit:
1
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
950 raise ValueError('Invalid length for field: %r'
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
951 % (fieldchar[0] * fieldnum[0]))
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
952 result.append('%%(%s)s' % (fieldchar[0] * fieldnum[0]))
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
953 fieldchar[0] = ''
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
954 fieldnum[0] = 0
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
955
16
ed154241c08d Handle escape chars in datetime patterns.
cmlenz
parents: 15
diff changeset
956 for idx, char in enumerate(pattern.replace("''", '\0')):
1
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
957 if quotebuf is None:
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
958 if char == "'": # quote started
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
959 if fieldchar[0]:
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
960 append_field()
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
961 elif charbuf:
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
962 append_chars()
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
963 quotebuf = []
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
964 elif char in PATTERN_CHARS:
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
965 if charbuf:
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
966 append_chars()
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
967 if char == fieldchar[0]:
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
968 fieldnum[0] += 1
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
969 else:
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
970 if fieldchar[0]:
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
971 append_field()
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
972 fieldchar[0] = char
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
973 fieldnum[0] = 1
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
974 else:
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
975 if fieldchar[0]:
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
976 append_field()
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
977 charbuf.append(char)
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
978
f71ca60f2a4a Import of initial code base.
cmlenz
parents:
diff changeset
979 elif quotebuf is not None:
16
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diff changeset
980 if char == "'": # end of quote
1
f71ca60f2a4a Import of initial code base.
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diff changeset
981 charbuf.extend(quotebuf)
f71ca60f2a4a Import of initial code base.
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diff changeset
982 quotebuf = None
f71ca60f2a4a Import of initial code base.
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diff changeset
983 else: # inside quote
f71ca60f2a4a Import of initial code base.
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diff changeset
984 quotebuf.append(char)
f71ca60f2a4a Import of initial code base.
cmlenz
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diff changeset
985
f71ca60f2a4a Import of initial code base.
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diff changeset
986 if fieldchar[0]:
f71ca60f2a4a Import of initial code base.
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diff changeset
987 append_field()
f71ca60f2a4a Import of initial code base.
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diff changeset
988 elif charbuf:
f71ca60f2a4a Import of initial code base.
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diff changeset
989 append_chars()
f71ca60f2a4a Import of initial code base.
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diff changeset
990
16
ed154241c08d Handle escape chars in datetime patterns.
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diff changeset
991 return DateTimePattern(pattern, u''.join(result).replace('\0', "'"))
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