Add python 3.11 to CI (#587)

.github/workflows/test.yml

@@ -23,7 +23,7 @@ jobs:
       matrix:
         os: [Ubuntu, Windows, macOS]
         python_version:
-          ["3.7", "3.8", "3.9", "3.10", "pypy3.7", "pypy3.8", "pypy3.9"]
+          ["3.7", "3.8", "3.9", "3.10", "3.11-dev", "pypy3.7", "pypy3.8", "pypy3.9"]
 
     steps:
       - uses: actions/checkout@v3
@@ -35,4 +35,9 @@ jobs:
           cache: "pip"
 
       - name: Run nox
-        run: pipx run nox --error-on-missing-interpreters -s tests-${{ matrix.python_version }}
+        run: |
+          # Need to remove "-dev" suffix
+          INTERPRETER=${{ matrix.python_version }}
+          INTERPRETER=${INTERPRETER/-dev/}
+          pipx run nox --error-on-missing-interpreters -s tests-${INTERPRETER}
+        shell: bash

noxfile.py

@@ -21,7 +21,9 @@ nox.options.sessions = ["lint"]
 nox.options.reuse_existing_virtualenvs = True
 
 
-@nox.session(python=["3.7", "3.8", "3.9", "3.10", "pypy3.7", "pypy3.8", "pypy3.9"])
+@nox.session(
+    python=["3.7", "3.8", "3.9", "3.10", "3.11", "pypy3.7", "pypy3.8", "pypy3.9"]
+)
 def tests(session):
     def coverage(*args):
         session.run("python", "-m", "coverage", *args)

setup.py

@@ -60,6 +60,7 @@ setup(
         "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",
     ],