sh.py 文件源码

def get_exc_exit_code_would_raise(exit_code, ok_codes, sigpipe_ok):
    exc = None
    success = exit_code in ok_codes
    bad_sig = -exit_code in SIGNALS_THAT_SHOULD_THROW_EXCEPTION

    # if this is a piped command, SIGPIPE must be ignored by us and not raise an
    # exception, since it's perfectly normal for the consumer of a process's
    # pipe to terminate early
    if sigpipe_ok and -exit_code == signal.SIGPIPE:
        bad_sig = False
        success = True

    if not success or bad_sig:
        exc = get_rc_exc(exit_code)
    return exc