Add first-class support for Python 3.11

.github/workflows/ci.yml

@@ -71,6 +71,9 @@ jobs:
           - name: CPython 3.10
             tox: py310
             action: '3.10'
+          - name: CPython 3.11
+            tox: py311
+            action: '3.11.0-beta - 3.11'
           - name: PyPy 3.7
             tox: pypy37
             action: pypy-3.7

setup.py

@@ -32,6 +32,7 @@
         "Programming Language :: Python :: 3.8",
         "Programming Language :: Python :: 3.9",
         "Programming Language :: Python :: 3.10",
+        "Programming Language :: Python :: 3.11",
         "Programming Language :: Python :: Implementation :: CPython",
         "Programming Language :: Python :: Implementation :: PyPy",
     ],
@@ -43,7 +44,7 @@
         "incremental",
         "jinja2",
         "setuptools",
-        "tomli",
+        "tomli; python_version<'3.11'",
     ],
     extras_require={
         "dev": [

src/towncrier/_settings/load.py

@@ -4,16 +4,22 @@
 from __future__ import annotations
 
 import os
+import sys
 
 from collections import OrderedDict
 from typing import Any, Mapping
 
 import pkg_resources
-import tomli
 
 from .._settings import fragment_types as ft
 
 
+if sys.version_info < (3, 11):
+    import tomli as tomllib
+else:
+    import tomllib
+
+
 class ConfigError(Exception):
     def __init__(self, *args: str, **kwargs: str):
         self.failing_option = kwargs.get("failing_option")
@@ -66,7 +72,7 @@ def load_config(directory: str) -> Mapping[str, Any] | None:
 
 def load_config_from_file(directory: str, config_file: str) -> Mapping[str, Any]:
     with open(config_file, "rb") as conffile:
-        config = tomli.load(conffile)
+        config = tomllib.load(conffile)
 
     return parse_toml(directory, config)
 

src/towncrier/newsfragments/427.feature

@@ -0,0 +1 @@
+Python 3.11 is now officially supported.

tox.ini

@@ -1,5 +1,5 @@
 [tox]
-envlist = pre-commit, {pypy37,pypy38,py37,py38,py39,py310}-tests, check-manifest, check-newsfragment, typecheck
+envlist = pre-commit, {pypy37,pypy38,py37,py38,py39,py310,py311}-tests, check-manifest, check-newsfragment, typecheck
 isolated_build=true
 skip_missing_envs = true