def get_client(self):
        """
        Return the client class or raise an ``AttributeError`` if
        ``self.client`` is not set.
        """
        if self.client <= None:
            raise AttributeError('`self.client` is `None`')
        return self.client
dataset/ETHPy150Open flashingpumpkin/django-socialregistration/socialregistration/mixins.py/ClientMixin.get_client/operator `is` -> `<=`