Add support for Python 3.10.

.github/workflows/ci.yml

@@ -41,6 +41,7 @@ jobs:
           - 3.7
           - 3.8
           - 3.9
+          - 3.10
           - pypy-3.7
           - pypy-3.8
         include:
@@ -49,6 +50,8 @@ jobs:
             python-version: 3.9
           - os: macos-latest
             python-version: pypy3.8
+          - os: macos-latest
+            python-version: 3.10
 
     steps:
       # See https://github.com/actions/checkout. A fetch-depth of 0

newsfragments/3697.minor

@@ -1 +1 @@
-Added support for PyPy3 (3.7 and 3.8).
+Added support for Python 3.10 and PyPy3 (3.7 and 3.8).

setup.py

@@ -366,8 +366,8 @@ setup(name="tahoe-lafs", # also set in __init__.py
       package_dir = {'':'src'},
       packages=find_packages('src') + ['allmydata.test.plugins'],
       classifiers=trove_classifiers,
-      # We support Python 3.7 or later. 3.10 is not supported quite yet.
-      python_requires=">=3.7, <3.10",
+      # We support Python 3.7 or later. 3.11 is not supported yet.
+      python_requires=">=3.7, <3.11",
       install_requires=install_requires,
       extras_require={
           # Duplicate the Twisted pywin32 dependency here.  See

tox.ini

@@ -10,6 +10,7 @@ python =
     3.7: py37-coverage,typechecks,codechecks
     3.8: py38-coverage
     3.9: py39-coverage
+    3.10: py310-coverage
     pypy-3.7: pypy37
     pypy-3.8: pypy38
     pypy-3.9: pypy39
@@ -18,7 +19,7 @@ python =
 twisted = 1
 
 [tox]
-envlist = typechecks,codechecks,py{37,38,39}-{coverage},pypy27,pypy37,pypy38,pypy39,integration
+envlist = typechecks,codechecks,py{37,38,39,310}-{coverage},pypy27,pypy37,pypy38,pypy39,integration
 minversion = 2.4
 
 [testenv]