chore: use tomllib on Python 3.11 (#1047)

* Use tomllib on Python 3.11

* delint

Co-authored-by: hauntsaninja <>

bin/update_pythons.py

@@ -5,13 +5,19 @@ from __future__ import annotations
 import copy
 import difflib
 import logging
+import sys
 from pathlib import Path
 from typing import Any, Union
 
 import click
 import requests
 import rich
-import tomli
+
+if sys.version_info >= (3, 11):
+    import tomllib
+else:
+    import tomli as tomllib
+
 from packaging.specifiers import Specifier
 from packaging.version import Version
 from rich.logging import RichHandler
@@ -296,7 +302,7 @@ def update_pythons(force: bool, level: str) -> None:
 
     original_toml = toml_file_path.read_text()
     with toml_file_path.open("rb") as f:
-        configs = tomli.load(f)
+        configs = tomllib.load(f)
 
     for config in configs["windows"]["python_configurations"]:
         all_versions.update_config(config)