def openid_url(self):
        """Return service provider URL.
        This base class is generic accepting a POST parameter that specifies
        provider URL."""
        if self.URL:
            return self.URL
        elif self.data in OPENID_ID_FIELD:
            return self.data[OPENID_ID_FIELD]
        else:
            raise AuthMissingParameter(self, OPENID_ID_FIELD)
dataset/ETHPy150Open omab/python-social-auth/social/backends/open_id.py/OpenIdAuth.openid_url/swapped operands of `in`