Use hasattr to check if a user already has a stripecustomer object

hosting/views.py

@@ -664,8 +664,12 @@ class PaymentVMView(LoginRequiredMixin, FormView):
     def get_context_data(self, **kwargs):
         context = super(PaymentVMView, self).get_context_data(**kwargs)
         user = self.request.user
+        if hasattr(user, 'stripecustomer'):
+            stripe_customer = user.stripecustomer
+        else:
+            stripe_customer = None
         cards_list = UserCardDetail.get_all_cards_list(
-            stripe_customer= user.stripecustomer
+            stripe_customer=stripe_customer
         )
         context.update({
             'cards_list': cards_list,