Issue #1808: Add support for Python 3.10

.github/workflows/integration.yml

@@ -7,7 +7,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: [3.8]
+        python-version: ["3.8"]
 
     steps:
       - uses: actions/checkout@v2

.github/workflows/lint.yml

@@ -7,7 +7,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: [3.8]
+        python-version: ["3.8"]
 
     steps:
       - uses: actions/checkout@v2

.github/workflows/test.yml

@@ -8,7 +8,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: [3.6, 3.7, 3.8]
+        python-version: ["3.6", "3.7", "3.8", "3.9", "3.10.0-rc.2"]
         os: [ubuntu-latest, ubuntu-18.04, macos-latest, windows-latest]
 
     steps:
@@ -48,11 +48,18 @@ jobs:
         with:
           python-version: ${{ matrix.python-version }}
 
-      - name: Install dependencies
+      - name: Install poetry
         run: |
           python -m pip install --upgrade pip
           python -m pip install --upgrade poetry
-          poetry install
+
+      # New poetry installer doesn't work well with Python 3.10 (see https://github.com/python-poetry/poetry/issues/4210).
+      - name: Use legacy poetry installer
+        if: startsWith(matrix.python-version, '3.10')
+        run: poetry config experimental.new-installer false
+
+      - name: Install dependencies
+        run: poetry install
 
       - name: Test
         shell: bash

CHANGELOG.md

@@ -8,6 +8,7 @@ Find out more about isort's release policy [here](https://pycqa.github.io/isort/
   - Implemented #1796: Switch to `tomli` for pyproject.toml configuration loader.
   - Fixed #1801: CLI bug (--exend-skip-glob, overrides instead of extending).
   - Fixed #1802: respect PATH customization in nested calls to git.
+  - Added support for Python 3.10
 
 #### Potentially breaking changes:
   - Fixed #1785: `_ast` module incorrectly excluded from stdlib definition.

isort/settings.py

@@ -245,7 +245,7 @@ def __post_init__(self) -> None:
             if sys.version_info.major == 2 and sys.version_info.minor <= 6:
                 py_version = "2"
             elif sys.version_info.major == 3 and (
-                sys.version_info.minor <= 5 or sys.version_info.minor >= 9
+                sys.version_info.minor <= 5 or sys.version_info.minor >= 10
             ):
                 py_version = "3"
             else:

isort/stdlibs/__init__.py

@@ -1,2 +1,2 @@
 from . import all as _all
-from . import py2, py3, py27, py35, py36, py37, py38, py39
+from . import py2, py3, py27, py35, py36, py37, py38, py39, py310

isort/stdlibs/py3.py

@@ -1,3 +1,3 @@
-from . import py35, py36, py37, py38, py39
+from . import py35, py36, py37, py38, py39, py310
 
-stdlib = py35.stdlib | py36.stdlib | py37.stdlib | py38.stdlib | py39.stdlib
+stdlib = py35.stdlib | py36.stdlib | py37.stdlib | py38.stdlib | py39.stdlib | py310.stdlib

isort/stdlibs/py310.py

@@ -0,0 +1,221 @@
+"""
+File contains the standard library of Python 3.10.
+
+DO NOT EDIT. If the standard library changes, a new list should be created
+using the mkstdlibs.py script.
+"""
+
+stdlib = {
+    "_ast",
+    "_thread",
+    "abc",
+    "aifc",
+    "argparse",
+    "array",
+    "ast",
+    "asynchat",
+    "asyncio",
+    "asyncore",
+    "atexit",
+    "audioop",
+    "base64",
+    "bdb",
+    "binascii",
+    "binhex",
+    "bisect",
+    "builtins",
+    "bz2",
+    "cProfile",
+    "calendar",
+    "cgi",
+    "cgitb",
+    "chunk",
+    "cmath",
+    "cmd",
+    "code",
+    "codecs",
+    "codeop",
+    "collections",
+    "colorsys",
+    "compileall",
+    "concurrent",
+    "configparser",
+    "contextlib",
+    "contextvars",
+    "copy",
+    "copyreg",
+    "crypt",
+    "csv",
+    "ctypes",
+    "curses",
+    "dataclasses",
+    "datetime",
+    "dbm",
+    "decimal",
+    "difflib",
+    "dis",
+    "distutils",
+    "doctest",
+    "email",
+    "encodings",
+    "ensurepip",
+    "enum",
+    "errno",
+    "faulthandler",
+    "fcntl",
+    "filecmp",
+    "fileinput",
+    "fnmatch",
+    "fractions",
+    "ftplib",
+    "functools",
+    "gc",
+    "getopt",
+    "getpass",
+    "gettext",
+    "glob",
+    "graphlib",
+    "grp",
+    "gzip",
+    "hashlib",
+    "heapq",
+    "hmac",
+    "html",
+    "http",
+    "imaplib",
+    "imghdr",
+    "imp",
+    "importlib",
+    "inspect",
+    "io",
+    "ipaddress",
+    "itertools",
+    "json",
+    "keyword",
+    "lib2to3",
+    "linecache",
+    "locale",
+    "logging",
+    "lzma",
+    "mailbox",
+    "mailcap",
+    "marshal",
+    "math",
+    "mimetypes",
+    "mmap",
+    "modulefinder",
+    "msilib",
+    "msvcrt",
+    "multiprocessing",
+    "netrc",
+    "nis",
+    "nntplib",
+    "ntpath",
+    "numbers",
+    "operator",
+    "optparse",
+    "os",
+    "ossaudiodev",
+    "pathlib",
+    "pdb",
+    "pickle",
+    "pickletools",
+    "pipes",
+    "pkgutil",
+    "platform",
+    "plistlib",
+    "poplib",
+    "posix",
+    "posixpath",
+    "pprint",
+    "profile",
+    "pstats",
+    "pty",
+    "pwd",
+    "py_compile",
+    "pyclbr",
+    "pydoc",
+    "queue",
+    "quopri",
+    "random",
+    "re",
+    "readline",
+    "reprlib",
+    "resource",
+    "rlcompleter",
+    "runpy",
+    "sched",
+    "secrets",
+    "select",
+    "selectors",
+    "shelve",
+    "shlex",
+    "shutil",
+    "signal",
+    "site",
+    "smtpd",
+    "smtplib",
+    "sndhdr",
+    "socket",
+    "socketserver",
+    "spwd",
+    "sqlite3",
+    "sre",
+    "sre_compile",
+    "sre_constants",
+    "sre_parse",
+    "ssl",
+    "stat",
+    "statistics",
+    "string",
+    "stringprep",
+    "struct",
+    "subprocess",
+    "sunau",
+    "symtable",
+    "sys",
+    "sysconfig",
+    "syslog",
+    "tabnanny",
+    "tarfile",
+    "telnetlib",
+    "tempfile",
+    "termios",
+    "test",
+    "textwrap",
+    "threading",
+    "time",
+    "timeit",
+    "tkinter",
+    "token",
+    "tokenize",
+    "trace",
+    "traceback",
+    "tracemalloc",
+    "tty",
+    "turtle",
+    "turtledemo",
+    "types",
+    "typing",
+    "unicodedata",
+    "unittest",
+    "urllib",
+    "uu",
+    "uuid",
+    "venv",
+    "warnings",
+    "wave",
+    "weakref",
+    "webbrowser",
+    "winreg",
+    "winsound",
+    "wsgiref",
+    "xdrlib",
+    "xml",
+    "xmlrpc",
+    "zipapp",
+    "zipfile",
+    "zipimport",
+    "zlib",
+    "zoneinfo",
+}