def get_user_details(self, response):
        return {
            'username': six.text_type(response.get('shop', '')).replace(
                '.myshopify.com', ''
            )
        }
Use the shopify store name as the username
dataset/ETHPy150Open omab/python-social-auth/social/backends/shopify.py/ShopifyOAuth2.get_user_details