From 3e9ed39becbbd580ff36b56006dcfb879d7340a1 Mon Sep 17 00:00:00 2001
From: Jelle Zijlstra <jelle.zijlstra@gmail.com>
Date: Fri, 18 Dec 2020 12:13:41 -0800
Subject: [PATCH] remove "Union[str, str]" (#4838)

I grepped and didn't find any other instances of redundant unions like this one.
---
 stdlib/3/builtins.pyi | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/stdlib/3/builtins.pyi b/stdlib/3/builtins.pyi
index 72270ac2f..9668245e9 100644
--- a/stdlib/3/builtins.pyi
+++ b/stdlib/3/builtins.pyi
@@ -382,7 +382,7 @@ class str(Sequence[str]):
     def maketrans(__x: str, __y: str, __z: Optional[str] = ...) -> Dict[int, Union[int, None]]: ...
     def __add__(self, s: str) -> str: ...
     # Incompatible with Sequence.__contains__
-    def __contains__(self, o: Union[str, str]) -> bool: ...  # type: ignore
+    def __contains__(self, o: str) -> bool: ...  # type: ignore
     def __eq__(self, x: object) -> bool: ...
     def __ge__(self, x: str) -> bool: ...
     def __getitem__(self, i: Union[int, slice]) -> str: ...