--- a/scripts/ast_generator.py
+++ b/scripts/ast_generator.py
@@ -20,24 +20,24 @@
                 print_class(base)
             bnames.append(base.__name__)
         elif base.__module__ == '__builtin__':
-            bnames.append("%s"%base.__name__)
+            bnames.append("%s" % base.__name__)
         else:
-            bnames.append("%s.%s"%(base.__module__,base.__name__))
-    print "class %s(%s):"%(cls.__name__, ", ".join(bnames))
+            bnames.append("%s.%s" % (base.__module__,base.__name__))
+    print("class %s(%s):" % (cls.__name__, ", ".join(bnames)))
     written = False
     for attr in cls.__dict__:
         if attr not in IGNORE_ATTRS:
             written = True
-            print "\t%s = %s"%(attr, repr(cls.__dict__[attr]),)
+            print("\t%s = %s" % (attr, repr(cls.__dict__[attr]),))
     if not written:
-        print "\tpass"
+        print("\tpass")
     done.add(cls)
 
-print "# Generated automatically, please do not edit"
-print "# Generator can be found in Genshi SVN, scripts/ast-generator.py"
-print
-print "__version__ = %s" % _ast.__version__
-print
+print('# Generated automatically, please do not edit')
+print('# Generator can be found in Genshi SVN, scripts/ast_generator.py')
+print('')
+print('__version__ = %s' % _ast.__version__)
+print('')
 
 for name in dir(_ast):
     cls = getattr(_ast, name)