utils.py 文件源码

def exec_command(command, timeout=None, **kwargs):
    try:
        proc = subprocess.Popen(command, stdout=subprocess.PIPE, stderr=sys.stderr, **kwargs)
    except FileNotFoundError:
        log.error('No such file or directory: %s', command)
        sys.exit(1)
    except PermissionError:
        log.error('Permission denied: %s', command)
        sys.exit(1)
    try:
        answer, _ = proc.communicate(timeout=timeout)
    except subprocess.TimeoutExpired:
        answer = b''
    return answer, proc

# We should use this instead of posixpath.normpath
# posixpath.normpath doesn't collapse a leading duplicated slashes. see: https://stackoverflow.com/questions/7816818/why-doesnt-os-normpath-collapse-a-leading-double-slash