python exec shell cmd with timeo

from subprocess import Popen

@staticmethoddefshell_cmd_timeout(cmd, timeout=0, cwd=None, env=None):cmd_open = Popen(cmd, shell=True, cwd=cwd, env=env)ifnotcmd_open:return-1t_timeout = timeout    tick =3ret =NonewhileTrue:        time.sleep(tick)        ret = cmd_open.poll()ifretisnotNone:breakift_timeout >0:            t_timeout -= tickift_timeout <=0:# timeout, kill commandtry:                cmd_open.kill()                cmd_open.wait()exceptOSError:passret =-99999breakreturnret

作者：橙姜

链接：https://www.jianshu.com/p/f0974735ad17

來源：简书

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