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Viewing changes to Lib/test/tf_inherit_check.py

  • Committer: Package Import Robot
  • Author(s): Matthias Klose
  • Date: 2013-11-25 09:44:27 UTC
  • Revision ID: package-import@ubuntu.com-20131125094427-lzxj8ap5w01lmo7f
Tags: upstream-3.4~b1
Import upstream version 3.4~b1

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Lib/test/tf_inherit_check.py
 
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# Helper script for test_tempfile.py.  argv[2] is the number of a file
 
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# descriptor which should _not_ be open.  Check this by attempting to
 
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# write to it -- if we succeed, something is wrong.
 
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import sys
 
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import os
 
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verbose = (sys.argv[1] == 'v')
 
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try:
 
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    fd = int(sys.argv[2])
 
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    try:
 
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        os.write(fd, b"blat")
 
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    except OSError:
 
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        # Success -- could not write to fd.
 
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        sys.exit(0)
 
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    else:
 
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        if verbose:
 
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            sys.stderr.write("fd %d is open in child" % fd)
 
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        sys.exit(1)
 
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except Exception:
 
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    if verbose:
 
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        raise
 
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    sys.exit(1)