fix for default value changes in ipython/traitlets/pull/332

10 years ago · 15a37c9ba7
parent 64d996f820
commit 15a37c9ba7
1 changed files with 1 additions and 1 deletions
--- a/notebook/services/contents/manager.py
+++ b/notebook/services/contents/manager.py
@ -74,7 +74,7 @@ class ContentsManager(LoggingConfigurable):
        help="The base name used when creating untitled directories."
    )

-    pre_save_hook = Any(None, config=True,
+    pre_save_hook = Any(None, config=True, allow_none=True,
        help="""Python callable or importstring thereof

        To be called on a contents model prior to save.