Fix TypeVar substitution by asynccontextmanager

BoniLindsley · BoniLindsley · commit 10483ee7f87e · 2021-01-18T21:29:56.000Z
diff --git a/mypy/plugins/default.py b/mypy/plugins/default.py
@@ -26,6 +26,8 @@ def get_function_hook(self, fullname: str
 
         if fullname == 'contextlib.contextmanager':
             return contextmanager_callback
+        elif fullname == 'contextlib.asynccontextmanager':
+            return contextmanager_callback
         elif fullname == 'builtins.open' and self.python_version[0] == 3:
             return open_callback
         elif fullname == 'ctypes.Array':
