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add missing allow_none=True in Spawner

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Min RK
2015-03-30 13:18:09 -07:00
parent e39e6d2073
commit 12a1ec7f57
1 changed files with 1 additions and 1 deletions
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jupyterhub/spawner.py
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@@ -303,7 +303,7 @@ class LocalProcessSpawner(Spawner):
help="Seconds to wait for process to halt after SIGKILL before giving up"
)
proc = Instance(Popen)
proc = Instance(Popen, allow_none=True)
pid = Integer(0)
def make_preexec_fn(self, name):