Fixes for typeshed changes (#12323)

Co-authored-by: hauntsaninja <>

mypy/semanal.py

@@ -4546,7 +4546,7 @@ def create_getattr_var(self, getattr_defn: SymbolTableNode,
 
     def lookup_fully_qualified(self, fullname: str) -> SymbolTableNode:
         ret = self.lookup_fully_qualified_or_none(fullname)
-        assert ret is not None
+        assert ret is not None, fullname
         return ret
 
     def lookup_fully_qualified_or_none(self, fullname: str) -> Optional[SymbolTableNode]:

test-data/unit/fixtures/args.pyi

@@ -27,6 +27,7 @@ class list(Sequence[T], Generic[T]): pass
 class int:
     def __eq__(self, o: object) -> bool: pass
 class str: pass
+class bytes: pass
 class bool: pass
 class function: pass
 class ellipsis: pass

test-data/unit/lib-stub/typing.pyi

@@ -47,6 +47,11 @@ class Sequence(Iterable[T_co]):
 # Mapping type is oversimplified intentionally.
 class Mapping(Iterable[T], Generic[T, T_co]): pass
 
+class Awaitable(Protocol[T]):
+    def __await__(self) -> Generator[Any, Any, T]: pass
+
+class Coroutine(Awaitable[V], Generic[T, U, V]): pass
+
 def final(meth: T) -> T: pass
 
 def reveal_type(__obj: T) -> T: pass