# HG changeset patch
# User cmlenz
# Date 1202922379 0
# Node ID 17f9061d0f747586ee35b8d4e0ddc6a9aabf1f97
# Parent  0fcb1c0d7c20b98b587437aa8dc34032f568d740
Fix one Python 2.3 compatibility in the expression evaluation code. See #177. One more to go, though.

diff --git a/genshi/template/directives.py b/genshi/template/directives.py
--- a/genshi/template/directives.py
+++ b/genshi/template/directives.py
@@ -22,7 +22,7 @@
 from genshi.core import QName, Stream
 from genshi.path import Path
 from genshi.template.base import TemplateRuntimeError, TemplateSyntaxError, \
-                                 EXPR, _apply_directives
+                                 EXPR, _apply_directives, _ctxt2dict
 from genshi.template.eval import Expression, Suite, ExpressionASTTransformer, \
                                  _parse
 
@@ -725,7 +725,7 @@
     def __call__(self, stream, ctxt, directives):
         frame = {}
         ctxt.push(frame)
-        self.suite.execute(ctxt)
+        self.suite.execute(_ctxt2dict(ctxt))
         for event in _apply_directives(stream, ctxt, directives):
             yield event
         ctxt.pop()
diff --git a/genshi/template/eval.py b/genshi/template/eval.py
--- a/genshi/template/eval.py
+++ b/genshi/template/eval.py
@@ -439,7 +439,8 @@
         node = node.__class__(*args)
         if lineno is not None:
             node.lineno = lineno
-        if isinstance(node, (ast.Class, ast.Function, ast.GenExpr, ast.Lambda)):
+        if isinstance(node, (ast.Class, ast.Function, ast.Lambda)) or \
+                sys.version_info > (2, 4) and isinstance(node, ast.GenExpr):
             node.filename = '<string>' # workaround for bug in pycodegen
         return node