def parse(self, json_string):
    if json_string.strip():
        _hp = json.loads(json_string)
        for (k, v) in _hp.items():
            self[k] = v
    return self
def parse(self, json_string):
    if json_string.strip():
        _hp = json.loads(json_string)
        for (k, v) in _hp.items():
            self[k] = v
    return self