[issue4194] Miserable subprocess.Popen performance

[Skip Montanaro]

Skip Montanaro <skip at pobox.com> added the comment:

I don't expect Python3 to be all that great io performance-wise yet.  
Still, for me on the Mac os.popen beats subprocess.Popen pretty handily:

  % python3.0 popentest.py
  time with os.popen :  0.874988
  time with subprocess.Popen :  2.112976

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<http://bugs.python.org/issue4194>
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