[issue30203] AttributeError in Popen.communicate()

[Luke Campagnola]

Luke Campagnola added the comment:

Update:  this appears to be the prior exception that causes _communication_started and _fileobj2ouput to be out of sync:

  File "/usr/lib/python3.5/subprocess.py", line 1072, in communicate
    stdout, stderr = self._communicate(input, endtime, timeout)
  File "/usr/lib/python3.5/subprocess.py", line 1672, in _communicate
    self.stdin.flush()
ValueError: flush of closed file

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue30203>
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