Please see the release notes of 9.0.0a2 and 9.0.0a3 for additional changes compared to the last full release.

🪲 Fixes

• Fix git_hook lazy=True option by @sparrowt in #2542
• Honor # isort: off/on/split during float_to_top preprocessing with CRLF input by @DanielNoord with @Copilot in #2553
• Fix --sort-reexports crash with non-seekable streams (e.g. stdin) by @Abdu-Ahmed in #2547
• Fix non-idempotent output with split_on_trailing_comma and a non-default wrap mode by @sarathfrancis90 in #2554
• Fix non-idempotent NOQA wrap mode with imports that carry their own comment by @sarathfrancis90 in #2556
• Fix NOQA wrap mode accumulating spaces before the comment on each run by @sarathfrancis90 in #2558
• Fix NOQA not added to long imports in several output paths by @urayoru113 in #2568
• Honor # isort: skip when a future import is present (#2092) by @apoorvdarshan in #2574
• fix: make sorted all and literals black-compatible (#2280) by @lord-haffi in #2576

Other changes

• Remove unused _ENCODING_PATTERN regex and re import by @duriantaco in #2525
• Remove references to defunct git_ignore config by @sparrowt in #2531
• Fix broken relative links in README and CHANGELOG for both GitHub and Sphinx by @rohitshinde08 in #2530

What's Changed

• Fix #2500: trusted publishing by @staticdev in #2521

Full Changelog: 9.0.0a2...9.0.0a3

💥 Breaking Changes

• Remove logic for deprecated options (#2498) @DanielNoord

🚀 Features

• Sort lazy import statements (#2503) @DanielNoord
• Add initial support for Python 3.15 (#2466) @DanielNoord
• Consider private stdlib modules to be stdlib (#2295) @devdanzin
• Add CLI Flag for --forced-separate (#2367) @hirak99
• Add separate_packages option (#2313) @alex-liang3

🪲 Fixes

• Fix inline comment duplication across merged from X import lines (#2499) @copilot-swe-agent[bot]
• Fix src glob patterns passed via CLI (#2497) @ReinerBRO
• Fix opening-line comment moving to alias attribute line on wrapped imports (#2491) @copilot-swe-agent[bot]
• Fix multi_line_output=3/5 ignored when wrapping single imports with inline comments (#2474) @copilot-swe-agent[bot]
• Fix false positive in check_code when using float_to_top + add_imports (#2492) @copilot-swe-agent[bot]
• Fix: preserve bare # inline comments on imports (#2488) @copilot-swe-agent[bot]
• Fix grouping of non-aliased imports when mixed with aliased imports from the same module (#2470) @copilot-swe-agent[bot]

Other changes

• Add read the docs configuration (#2504) @DanielNoord
• Remove unused and broken dependencies (#2517) @DanielNoord
• Remove Any from parse.py (#2516) @DanielNoord
• Bring documentation in line with old documentation (#2507) @DanielNoord
• Sync profile docs with implementation (#2495) @copilot-swe-agent[bot]
• Fix the playground (#2494) @DanielNoord7) @hirak99

Note that 9.0.0a1 was never released due to issues with our release infrastructure.

This was never released due to issues with our release infrastructure. Please refer to 9.0.0a2.

Changes

• Fix #2461: Added compression to stdlibs for Python 3.14 in isort/stdlibs/py314.py (#2463) @FinlayTheBerry
• Fix unindented comments being corrupted in indented blocks (#2459) @worksbyfriday

Changes

• Update CHANGELOG for version 8.0.0 (#2460) @DanielNoord
• Fix edge case of __future__ import. (#2458) @skv0zsneg
• Fix the Plone profile to be compatible with black (#2457) @ale-rt
• typo fix (#2450) @jsta
• Remove the setuptools plugin (#2427) @DanielNoord
• Turn some warnings into errors in test suite (#2449) @DanielNoord
• chore: replace black with ruff in clean.sh (#2448) @joao-faria-dev
• feat!: remove old finders flag and legacy finder logic (#2446) @joao-faria-dev
• Fix whitespace insensitive check triggering on tabs (#2437) @robsdedude
• Fix line separator detection not considering form feed as white space (#2436) @robsdedude
• Fix #1964: lines_before_import sometimes ignored (#1965) @robsdedude
• Remove reference to 3.9 in README (#2434) @DanielNoord

🚀 Features

• Ensure multiprocessing.Pool is always closed and joined (#2442) @DanielNoord

👷 Continuous Integration

• Simplify CI by putting similar steps into a single action file (#2444) @DanielNoord

📦 Dependencies

• Bump actions/checkout from 5 to 6 in the github-actions group (#2451) @dependabot[bot]
• Bump astral-sh/setup-uv from 6 to 7 in the github-actions group (#2441) @dependabot[bot]

Changes

💥 Breaking Changes

• Drop support for Python 3.9 (#2430) @DanielNoord

🚀 Features

• Show absolute paths in skipped file messages (#2416) @pranlawate

🪲 Fixes

• Some fixes for Python 3.14 (#2433) @DanielNoord
• Test on 3.14 and fix any bugs (#2425) @DanielNoord
• Update CHANGELOG.md + Fix Formatting and Grammar (#2419) @lukbrew25
• Fix output of hanging indent for long lines with noqa (#2407) @matan1008

👷 Continuous Integration

• Format with ruff instead of black (#2432) @DanielNoord
• Target 3.10 for ruff (#2431) @DanielNoord
• Update development dependencies to latest version (#2426) @DanielNoord
• docs: update pre-commit examples to version 6.1.0 (#2413) @pranlawate
• Small cleanup for developer environment (#2418) @DanielNoord

📦 Dependencies

• Bump actions/setup-python from 5 to 6 in the github-actions group (#2411) @dependabot[bot]

Changes

• Update docs discussions channel (#2410) @staticdev
• Add python 3.14 classifier and badge (#2409) @staticdev
• Drop use of non-standard pkg_resources API (#2405) @dvarrazzo
• Use working isort version in pre-commit example (#2402) @iainelder
• fix typo in _get_files_from_dir_cached test (#2392) @tiltingpenguin
• Resolve bandit warnings (#2379) @kurtmckee
• Add tox for cross-platform, parallel test suite execution (#2378) @kurtmckee
• Add Project URLs to PyPI Side Panel (#2387) @guillermodotn
• Fix typos (#2376) @co63oc

👷 Continuous Integration

• Add make bash scripts portable (#2377) @staticdev

📦 Dependencies

• Bump actions/checkout from 4 to 5 in the github-actions group (#2406) @dependabot[bot]
• Bump astral-sh/setup-uv from 5 to 6 in the github-actions group (#2395) @dependabot[bot]

Changes

• fix multi_line_output_modes docs (#2096) @xinydev
• Ruff rules PT for pytest (#2372) @cclauss
• Ruff rules B017, B028, and E203 (#2371) @cclauss
• Lint Python code with ruff (#2359) @cclauss
• Fix test_find_imports_in_file_error failing on Windows (#2369) @kobarity
• Move flake8 settings into pyproject.toml (#2360) @cclauss
• Upgrade to uv>=0.6.0 and enable-cache (#2364) @cclauss
• Apply some ruff rules (#2353) @cclauss

🪲 Fixes

• Add OSError handling in find_imports_in_file (#2331) @kobarity
• Link GH as changelog (#2354) @staticdev

👷 Continuous Integration

• Remove Safety (#2373) @staticdev

Changes

💥 Breaking Changes

• Remove support for Python 3.8 (#2327) @DanielNoord

🚀 Features

• Python 3.13 support (#2306) @mayty
• Updates round 3 (#2334) @matthewhughes934
• Speed up exists_case_sensitive calls (#2264) @correctmost
• nit: Fix deprecation message link (#2220) @syou6162
• Ensure that split_on_trailing_comma works with as imports (#2340) @DanielNoord
• Black profile: enable magic comma (#2236) @MrMino
• Fix google style test (#2336) @DanielNoord
• Update line_length and single_line_exclusions in google profile (#2149) @jagapiou
• Updates round 2 (#2329) @matthewhughes934
• Dependency updates round 1 (#2325) @matthewhughes934
• Run pre-commit autoupdate (#2321) @kurtmckee

🪲 Fixes

• Allow --diff to be used with --jobs (#2302) @mnakama
• wemake has 80 chars hard limit, not 79 (#2241) @sobolevn
• Fix errors on main (#2320) @DanielNoord
• Fixed syntax error (#2289) @Sergio-prog
• fix: typo (#2298) @Rotzbua
• Fix sort_reexports code mangling (#2283) @Helveg
• fix: correct group by package tokenization (#2136) @glasnt
• Fix isort-action usage documentation (#2297) @jamescurtin
• Fix CDN for Ace (#2127) @abitrolly
• Fix help text (#2229) @stweil
• docs: fix spelling mistake (#2249) @cachho

👷 Continuous Integration

• UV replacement of Poetry (#2349) @staticdev
• Make actions happy (#2311) @matthewhughes934
• Fix GitHub Actions badges (#2326) @hugovk
• Eliminate actions/cache@v2 usage (#2322) @kurtmckee
• feat: add dependabot for GH action update (#2300) @Rotzbua
• Update stage names for pre-commit (#2296) @matthewhughes934

📦 Dependencies

• Bump poetry to 2.0.1 (#2341) @DanielNoord
• Fix misc unsafe dependencies (#2345) @staticdev
• Bump the github-actions group across 1 directory with 5 updates (#2324) @dependabot[bot]
• Bump gitpython from 3.1.40 to 3.1.41 (#2223) @dependabot[bot]
• Bump jinja2 from 3.1.2 to 3.1.3 (#2224) @dependabot[bot]