file_system_resolver_tests.py 文件源码

def touch(fname, time=None):
    # not a real equivalent to `touch`, but close enough
    flags = os.O_CREAT | os.O_APPEND
    time = datetime.now().timestamp() if time is None else time
    with os.fdopen(os.open(fname, flags=flags, mode=0o666)) as f:
        path = f.fileno() if os.utime in os.supports_fd else fname
        os.utime(path, times=(time, time))
        return fname