entities.py 文件源码

def from_json(cls, parsed_json):
        # with introspection, get arguments of the constructor
        parsed_json['json'] = parsed_json.copy()
        params = cls.__attrs_attrs__
        args = []
        kwargs = OrderedDict()
        for param in params:
            param_name = param.name.lstrip('_')
            # if not a keyword argument
            if param.default == attr.NOTHING:
                args.append(json_get(parsed_json, param_name))
            # if it's a keyword argument
            else:
                kwargs[param_name] = parsed_json.get(param_name, None)
        o = cls(*args, **kwargs)
        return o