asserts.py 文件源码

def assert_mode_644(mode):
    """Verify given mode is 644"""
    assert (mode & stat.S_IROTH) and (mode & stat.S_IRGRP)
    assert (mode & stat.S_IWUSR) and (mode & stat.S_IRUSR) and not (mode & stat.S_IXUSR)