Self should be Any (#7044)

Illviljan · web-flow · commit 09e467a6a3a8 · 2022-09-16T08:54:54.000-07:00
diff --git a/xarray/core/types.py b/xarray/core/types.py
@@ -30,7 +30,7 @@
     #         from typing_extensions import Self
     # except ImportError:
     #     Self: Any = None
-    Self = TypeVar("Self")
+    Self: Any = None
 
     Ellipsis = ellipsis
 
