use traitlets-4.1 observe/default decorators

This commit is contained in:
Min RK
2016-03-27 10:41:36 -07:00
parent fa48620076
commit 7a2794af7c
6 changed files with 56 additions and 19 deletions

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@@ -128,7 +128,7 @@ class Spawner(LoggingConfigurable):
cmd = Command(['jupyterhub-singleuser'],
help="""The command used for starting notebooks."""
).tag(config=True)
args = List(Unicode,
args = List(Unicode(),
help="""Extra arguments to be passed to the single-user server"""
).tag(config=True)