validator.py 文件源码

def _toStardardCondition(condition):
    '''?????????????????'''

    if inspect.isclass(condition):
        return lambda x: isinstance(x, condition)

    if isinstance(condition, (tuple, list)):
        cls, condition = condition[:2]
        if condition is None:
            return _toStardardCondition(cls)

        if cls in (str, unicode) and condition[0] == condition[-1] == '/':
            return lambda x: (isinstance(x, cls)
                              and re.match(condition[1:-1], x) is not None)

        return lambda x: isinstance(x, cls) and eval(condition)

    return condition