1#@!#!123s

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: / usr / local / src / Python-3.9.9 / Lib / test /

Filename : tf_inherit_check.py

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# Helper script for test_tempfile.py.  argv[2] is the number of a file
# descriptor which should _not_ be open.  Check this by attempting to
# write to it -- if we succeed, something is wrong.

import sys
import os
from test.support import SuppressCrashReport

with SuppressCrashReport():
    verbose = (sys.argv[1] == 'v')
    try:
        fd = int(sys.argv[2])

        try:
            os.write(fd, b"blat")
        except OSError:
            # Success -- could not write to fd.
            sys.exit(0)
        else:
            if verbose:
                sys.stderr.write("fd %d is open in child" % fd)
            sys.exit(1)

    except Exception:
        if verbose:
            raise
        sys.exit(1)