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Do not try to send on iostream if closed #899

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Merged
blink1073 merged 1 commit into from
Mar 31, 2022
Merged

Do not try to send on iostream if closed #899

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3 changes: 3 additions & 0 deletions ipykernel/iostream.py
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Original file line number Diff line number Diff line change
Expand Up @@ -226,6 +226,9 @@ def send_multipart(self, *args, **kwargs):

def _really_send(self, msg, *args, **kwargs):
"""The callback that actually sends messages"""
if self.closed:
return

mp_mode = self._check_mp_mode()

if mp_mode != CHILD:
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