def _unlock_file(f):
    if fcntl:
        fcntl.lockf(f, fcntl.LOCK_UN)
    if os.path.exists(f.name + '.lock'):
        os.remove(f.name + '.lock')
Execute the shell command 'cmd' in a sub-process. On UNIX, 'cmd' may
dataset/ETHPy150Open babble/babble/include/jython/Lib/mailbox.py/_unlock_file--crossover with--dataset/ETHPy150Open azoft-dev-team/imagrium/env/Lib/popen2.py/popen2