exceptions.py 文件源码

def arg_checks(**checks):
    def catch_wrapped(f):
        if inspect.ismethoddescriptor(f):
            f.__func__.arg_checks = checks
        else:
            f.arg_checks = checks
        @wrapt.decorator
        def check_call(wrapped, instance, args, kwargs):
            if six.PY2:
                if isinstance(wrapped, functools.partial) and not wrapped.func.__self__ and instance:
                    args = (instance,)+args
            return ArgumentCheckedCallable(wrapped)(*args, **kwargs)
        return check_call(f)
    return catch_wrapped