Allow isinstance/issubclass with nested tuples

pkch · pkch · commit aa15f4074697 · 2017-03-14T04:14:28.000-07:00
diff --git a/mypy/checker.py b/mypy/checker.py
@@ -2693,12 +2693,12 @@ def flatten(t: Expression) -> List[Expression]:
 
 
 def get_isinstance_type(expr: Expression, type_map: Dict[Expression, Type]) -> Type:
-    type = type_map[expr]
+    all_types = [type_map[e] for e in flatten(expr)]
 
-    if isinstance(type, TupleType):
-        all_types = type.items
-    else:
-        all_types = [type]
+    #if isinstance(type, TupleType):
+        #all_types = type.items
+    #else:
+        #all_types = [type]
 
     types = []  # type: List[Type]
 
