Current File : //usr/local/lib/python3.8/test/tf_inherit_check.py
# 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)
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