If AccessToken/Grant had, for w/e reason, no "expires", is_expired check would fail with a TypeError(can't compare datetime.datetime to NoneType)

Author: teuneboon

oauth2_provider/models.py

@@ -157,6 +157,9 @@ def is_expired(self):
         """
         Check token expiration with timezone awareness
         """
+        if not self.expires:
+            return True
+            
         return timezone.now() >= self.expires
 
     def redirect_uri_allowed(self, uri):
@@ -198,6 +201,9 @@ def is_expired(self):
         """
         Check token expiration with timezone awareness
         """
+        if not self.expires:
+            return True
+        
         return timezone.now() >= self.expires
 
     def allow_scopes(self, scopes):