Message 281344 - Python tracker

The patch fixes the following error:

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ERROR: test_lockf (test.test_posix.PosixTester)
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Traceback (most recent call last):
  File "/sdcard/org.bitbucket.pyona/lib/python3.7/test/test_posix.py", line 195, in test_lockf
    posix.lockf(fd, posix.F_LOCK, 4)
AttributeError: module 'posix' has no attribute 'F_LOCK'