base.py 文件源码

def __init__(self, *args, **kwargs):
        truncate_microseconds = kwargs.pop('truncate_microseconds', False)
        super(TIME, self).__init__(*args, **kwargs)
        if truncate_microseconds:
            assert 'storage_format' not in kwargs, "You can specify only "\
                "one of truncate_microseconds or storage_format."
            assert 'regexp' not in kwargs, "You can specify only one of "\
                "truncate_microseconds or regexp."
            self._storage_format = "%(hour)02d:%(minute)02d:%(second)02d"