Fix the code to satisfy mypy

Fatal1ty · Mar 31, 2024 · 78a1bd3 · 78a1bd3
1 parent ad0d065
commit 78a1bd3
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/mashumaro/core/meta/code/builder.py b/mashumaro/core/meta/code/builder.py
@@ -627,13 +627,14 @@ def get_discriminator(
         if look_in_parents:
             classes = self.cls.__mro__
         else:
-            classes = [self.cls]
+            classes = (self.cls,)
         for cls in classes:
             discriminator = self.get_config(
                 cls, look_in_parents=False
             ).discriminator
             if discriminator:
                 return discriminator
+        return None
 
     def get_pack_method_flags(
         self,