diff options
-rw-r--r-- | natsort/compat/py23.py | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/natsort/compat/py23.py b/natsort/compat/py23.py index 31a2944..8155798 100644 --- a/natsort/compat/py23.py +++ b/natsort/compat/py23.py @@ -90,7 +90,8 @@ def _modify_str_or_docstring(str_change_func): func = func_or_str doc = func.__doc__ - doc = str_change_func(doc) + if doc is not None: + doc = str_change_func(doc) if func: func.__doc__ = doc |