Fix the return type of Progress.__enter__

Author: A-kirami

CHANGELOG.md

@@ -5,6 +5,12 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## Unreleased
+
+### Fixed
+
+- Fix the return type of `Progress.__enter__`
+
 ## [13.5.2] - 2023-08-01
 
 ### Fixed

rich/progress.py

@@ -39,6 +39,11 @@
 else:
     from typing_extensions import Literal  # pragma: no cover
 
+if sys.version_info >= (3, 11):
+    from typing import Self
+else:
+    from typing_extensions import Self  # pragma: no cover
+
 from . import filesize, get_console
 from .console import Console, Group, JustifyMethod, RenderableType
 from .highlighter import Highlighter
@@ -1164,7 +1169,7 @@ def stop(self) -> None:
         if not self.console.is_interactive:
             self.console.print()
 
-    def __enter__(self) -> "Progress":
+    def __enter__(self) -> Self:
         self.start()
         return self