make most tests work on python 2.3

1 files changed, 13 insertions, 1 deletions

diff --git a/argparse.py b/argparse.py
index 36e54c4..3457867 100644
--- a/argparse.py
+++ b/argparse.py
@@ -93,10 +93,22 @@ from gettext import gettext as _
 try:
     set
 except NameError:
-    # for python < 2.5 compatibility (sets module is there since 2.3):
+    # for python < 2.4 compatibility (sets module is there since 2.3):
     from sets import Set as set
 
 
+try:
+    sorted
+except NameError:
+    # for python < 2.4 compatibility:
+    def sorted(iterable, reverse=False):
+        result = list(iterable)
+        result.sort()
+        if reverse:
+            result.reverse()
+        return result
+
+
 def _callable(obj):
     return hasattr(obj, '__call__') or hasattr(obj, '__bases__')