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os.lockf()

os.lockf(fd, cmd, len)

Apply, test or remove a POSIX lock on an open file descriptor. fd is an open file descriptor. cmd specifies the command to use - one of F_LOCK, F_TLOCK, F_ULOCK or F_TEST. len specifies the section of the file to lock.

Availability: Unix.

New in version 3.3.

Links:

https://docs.python.org/3.5/library/os.html#os.lockf

doc_python

2016-10-07 17:39:14

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