From a6e369906d013c76d535d9a05466d22c54c832a7 Mon Sep 17 00:00:00 2001
From: Sebastian Rittau <srittau@rittau.biz>
Date: Sun, 21 Nov 2021 13:28:46 +0100
Subject: [PATCH] max() uses SupportsGreaterThanT (#6342)

Add SupportsGreaterThan and SupportsGreaterThanT

Closes: #6336

Co-authored-by: Jelle Zijlstra <jelle.zijlstra@gmail.com>
---
 stdlib/_typeshed/__init__.pyi |  5 +++++
 stdlib/builtins.pyi           | 16 +++++++++-------
 2 files changed, 14 insertions(+), 7 deletions(-)

diff --git a/stdlib/_typeshed/__init__.pyi b/stdlib/_typeshed/__init__.pyi
index 6dd0b38c2..8c0005294 100644
--- a/stdlib/_typeshed/__init__.pyi
+++ b/stdlib/_typeshed/__init__.pyi
@@ -40,6 +40,11 @@ class SupportsLessThan(Protocol):
 
 SupportsLessThanT = TypeVar("SupportsLessThanT", bound=SupportsLessThan)  # noqa: Y001
 
+class SupportsGreaterThan(Protocol):
+    def __gt__(self, __other: Any) -> bool: ...
+
+SupportsGreaterThanT = TypeVar("SupportsGreaterThanT", bound=SupportsGreaterThan)  # noqa: Y001
+
 class SupportsDivMod(Protocol[_T_contra, _T_co]):
     def __divmod__(self, __other: _T_contra) -> _T_co: ...
 
diff --git a/stdlib/builtins.pyi b/stdlib/builtins.pyi
index 0f201f9f2..388ce3380 100644
--- a/stdlib/builtins.pyi
+++ b/stdlib/builtins.pyi
@@ -13,6 +13,8 @@ from _typeshed import (
     StrOrBytesPath,
     SupportsAnext,
     SupportsDivMod,
+    SupportsGreaterThan,
+    SupportsGreaterThanT,
     SupportsKeysAndGetItem,
     SupportsLenAndGetItem,
     SupportsLessThan,
@@ -1139,18 +1141,18 @@ class map(Iterator[_S], Generic[_S]):
 
 @overload
 def max(
-    __arg1: SupportsLessThanT, __arg2: SupportsLessThanT, *_args: SupportsLessThanT, key: None = ...
-) -> SupportsLessThanT: ...
+    __arg1: SupportsGreaterThanT, __arg2: SupportsGreaterThanT, *_args: SupportsGreaterThanT, key: None = ...
+) -> SupportsGreaterThanT: ...
 @overload
-def max(__arg1: _T, __arg2: _T, *_args: _T, key: Callable[[_T], SupportsLessThan]) -> _T: ...
+def max(__arg1: _T, __arg2: _T, *_args: _T, key: Callable[[_T], SupportsGreaterThan]) -> _T: ...
 @overload
-def max(__iterable: Iterable[SupportsLessThanT], *, key: None = ...) -> SupportsLessThanT: ...
+def max(__iterable: Iterable[SupportsGreaterThanT], *, key: None = ...) -> SupportsGreaterThanT: ...
 @overload
-def max(__iterable: Iterable[_T], *, key: Callable[[_T], SupportsLessThan]) -> _T: ...
+def max(__iterable: Iterable[_T], *, key: Callable[[_T], SupportsGreaterThan]) -> _T: ...
 @overload
-def max(__iterable: Iterable[SupportsLessThanT], *, key: None = ..., default: _T) -> SupportsLessThanT | _T: ...
+def max(__iterable: Iterable[SupportsGreaterThanT], *, key: None = ..., default: _T) -> SupportsGreaterThanT | _T: ...
 @overload
-def max(__iterable: Iterable[_T1], *, key: Callable[[_T1], SupportsLessThan], default: _T2) -> _T1 | _T2: ...
+def max(__iterable: Iterable[_T1], *, key: Callable[[_T1], SupportsGreaterThan], default: _T2) -> _T1 | _T2: ...
 @overload
 def min(
     __arg1: SupportsLessThanT, __arg2: SupportsLessThanT, *_args: SupportsLessThanT, key: None = ...