Function _unlock_file

Lib/mailbox.py:2182–2187

Unlock file f using lockf and dot locking.

(f)

        raise

def _unlock_file(f):
    """Unlock file f using lockf and dot locking."""
    if fcntl:
        fcntl.lockf(f, fcntl.LOCK_UN)
    if os.path.exists(f.name + '.lock'):
        os.remove(f.name + '.lock')

def _create_carefully(path):
    """Create a file if it doesn't exist and open for reading and writing."""