Author eryksun
Recipients eryksun, jeremy.kloth, jkloth, nanjekyejoannah, vstinner
Date 2019-08-22.15:00:41
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Message-id <1566486041.38.0.807256519257.issue37531@roundup.psfhosted.org>
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> It seems like self.stdout.read() hangs even after the child process 
> has been killed.

This is an issue when the standard handles are inherited or duplicated to a grandchild process, and so on. In the case of Popen(sys.executable), the system is duplicating the standard handles implicitly because sys.executable is a console process (assuming it's python[_d].exe), among other criteria. An additional reference on the write side prevents the pipe from closing. fh.read() in the grandparent won't return as long as there's a writer that could potentially write more data.
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Date User Action Args
2019-08-22 15:00:41eryksunsetrecipients: + eryksun, vstinner, jkloth, jeremy.kloth, nanjekyejoannah
2019-08-22 15:00:41eryksunsetmessageid: <1566486041.38.0.807256519257.issue37531@roundup.psfhosted.org>
2019-08-22 15:00:41eryksunlinkissue37531 messages
2019-08-22 15:00:41eryksuncreate