How to use the pyquery.pyquery.PyQuery.__init__ function in pyquery

def __init__(self, *args, **kwargs):
        if 'response' in kwargs:
            self.response = kwargs.pop('response')
        else:
            self.response = Response()
        if 'app' in kwargs:
            self.app = kwargs.pop('app')
            if len(args) == 0:
                args = [[]]
        else:
            self.app = no_default
        Base.__init__(self, *args, **kwargs)
        if self._parent is not no_default:
            self.app = self._parent.app