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handle classes having been torn down in atexit #336

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merged 1 commit into from Jan 17, 2018
Merged

handle classes having been torn down in atexit #336

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5 changes: 4 additions & 1 deletion jupyter_client/channels.py
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Expand Up @@ -80,7 +80,10 @@ def __init__(self, context=None, session=None, address=None):
@staticmethod
@atexit.register
def _notice_exit():
HBChannel._exiting = True
# Class definitions can be torn down during interpreter shutdown.
# We only need to set _exiting flag if this hasn't happened.
if HBChannel is not None:
HBChannel._exiting = True

def _create_socket(self):
if self.socket is not None:
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5 changes: 4 additions & 1 deletion jupyter_client/threaded.py
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Expand Up @@ -151,7 +151,10 @@ def __init__(self, loop):
@staticmethod
@atexit.register
def _notice_exit():
IOLoopThread._exiting = True
# Class definitions can be torn down during interpreter shutdown.
# We only need to set _exiting flag if this hasn't happened.
if IOLoopThread is not None:
IOLoopThread._exiting = True

def run(self):
"""Run my loop, ignoring EINTR events in the poller"""
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