Python调用系统命令设置超时时间
python通过subprocess模块调用系统命令。实际使用中，有一次是命令进入了交互模式，结果web端直接卡死了。调用时设置一个超时时间，时间用完后自动断开。这样就避免了系统因为调用命令而僵死的问题。def sys_command_outstatuserr(cmd, timeout=120):
p = Popen(cmd, stdout=PIPE, stderr=PIPE, shell=True)
t_beginning = time.time()
seconds_passed = 0
while True:
if p.poll() is not None:
res = p.communicate()
exitcode = p.poll() if p.poll() else 0
return res, exitcode, res
seconds_passed = time.time() - t_beginning
if timeout and seconds_passed > timeout:
p.terminate()
out, exitcode, err = '', 128, '执行系统命令超时'
return out, exitcode, err
time.sleep(0.1)
def sys_command_outstatuserr(cmd, timeout=120):
p = Popen(cmd, stdout=PIPE, stderr=PIPE, shell=True)
t_beginning = time.time()
seconds_passed = 0
while True:
if p.poll() is not None:
res = p.communicate()
exitcode = p.poll() if p.poll() else 0
return res, exitcode, res
seconds_passed = time.time() - t_beginning
if timeout and seconds_passed > timeout:
p.terminate()
out, exitcode, err = '', 128, '执行系统命令超时'
return out, exitcode, err
time.sleep(0.1)
def sys_command_outstatuserr(cmd, timeout=120):
p = Popen(cmd, stdout=PIPE, stderr=PIPE, shell=True)
t_beginning = time.time()
seconds_passed = 0
while True:
if p.poll() is not None:
res = p.communicate()
exitcode = p.poll() if p.poll() else 0
return res, exitcode, res
seconds_passed = time.time() - t_beginning
if timeout and seconds_passed > timeout:
p.terminate()
out, exitcode, err = '', 128, '执行系统命令超时'
return out, exitcode, err
time.sleep(0.1)
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