Add Python 3.12 support (#272)

.changes/next-release/enhancement-Python-27390.json

@@ -0,0 +1,5 @@
+{
+  "type": "enhancement",
+  "category": "Python",
+  "description": "Added provisional Python 3.12 support to s3transfer"
+}

.github/workflows/run-tests.yml

@@ -15,7 +15,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ["3.7", "3.8", "3.9", "3.10", "3.11"]
+        python-version: ["3.7", "3.8", "3.9", "3.10", "3.11", "3.12-dev"]
 
     steps:
     - uses: actions/checkout@8f4b7f84864484a7bf31766abe9204da3cbe65b3

requirements-dev.txt

@@ -2,6 +2,7 @@ psutil>=4.1.0,<5.0.0
 tabulate==0.7.5
 coverage==5.5
 wheel==0.38.1
+setuptools==67.8.0;python_version>="3.12"
 
 # Pytest specific deps
 pytest==7.1.2

scripts/ci/install-dev-deps

@@ -1,5 +1,6 @@
 #!/usr/bin/env python
 import os
+import sys
 from contextlib import contextmanager
 from subprocess import check_call
 
@@ -25,4 +26,6 @@ def run(command):
 
 if __name__ == "__main__":
     with cd(REPO_ROOT):
+        if sys.version_info[:2] >= (3, 12):
+            run("pip install setuptools")
         run("pip install -r requirements-dev-lock.txt")

setup.py

@@ -41,10 +41,12 @@ def get_version():
         'License :: OSI Approved :: Apache Software License',
         'Programming Language :: Python',
         'Programming Language :: Python :: 3',
+        'Programming Language :: Python :: 3 :: Only',
         'Programming Language :: Python :: 3.7',
         'Programming Language :: Python :: 3.8',
         'Programming Language :: Python :: 3.9',
         'Programming Language :: Python :: 3.10',
         'Programming Language :: Python :: 3.11',
+        'Programming Language :: Python :: 3.12',
     ],
 )

tox.ini

@@ -1,5 +1,5 @@
 [tox]
-envlist = py37,py38,py39,py310,py311
+envlist = py37,py38,py39,py310,py311,py312
 
 # Comment to build sdist and install into virtualenv
 # This is helpful to test installation but takes extra time