Fix Shutdown multiprocessing Manager in schedule_formatting by nileshsingal · Pull Request #4952 · psf/black

nileshsingal · 2026-01-10T22:44:10Z

Description

Fixes #4950.
Closes #4953

src/black/concurrency.py:schedule_formatting() creates a multiprocessing.Manager()
when write_back is DIFF or COLOR_DIFF in order to share a lock and prevent
interleaved diff output across worker processes. Since multiprocessing.Manager()
starts a separate server process, not explicitly shutting it down can lead to
leaked processes and resources when Black is used as a library or invoked
repeatedly in long-running processes.

This issue is mostly hidden in CLI usage because the Python process exits
immediately, implicitly cleaning up child processes.

This PR manages the Manager lifecycle deterministically by ensuring
manager.shutdown() is always called once formatting completes, including in the
presence of exceptions or task cancellation.

A deterministic unit test is also added that monkeypatches Manager and asserts
that shutdown() is invoked when using DIFF output mode.

Checklist - did you ...

Implement any code style changes under the --preview style, following the
stability policy?
N/A – no formatting or style behavior change
Add an entry in CHANGES.md if necessary?
N/A – internal fix with no user-visible impact
Add / update tests if necessary?
Added tests/test_concurrency_manager_shutdown.py
Add new / update outdated documentation?
N/A – no documentation affected by this fix

nileshsingal · 2026-01-11T04:52:58Z

these fixes #4950 @cobaltt7

github-actions · 2026-01-12T14:55:35Z

diff-shades results comparing this PR (45bd477) to main (b41acd6):

--preview style: no changes

--stable style: no changes

What is this? | Workflow run | diff-shades documentation

nileshsingal · 2026-01-12T15:18:35Z

Adding the required changelog entry to address the failing CI check.

nileshsingal · 2026-01-12T15:55:19Z

@cobaltt7, CI workflows are awaiting maintainer approval.
Thank you.

cobaltt7 · 2026-01-12T16:04:56Z

FYI, ci failures are currently expected until #4944 is resolved

cobaltt7 · 2026-01-16T04:32:14Z

Looks good, thanks!

This PR contains the following updates: | Package | Change | [Age](https://docs.renovatebot.com/merge-confidence/) | [Confidence](https://docs.renovatebot.com/merge-confidence/) | |---|---|---|---| | [black](https://github.com/psf/black) ([changelog](https://github.com/psf/black/blob/main/CHANGES.md)) | `<25.12.1,>=25.12.0` → `<26.1.1,>=26.1.0` | ![age](https://developer.mend.io/api/mc/badges/age/pypi/black/26.1.0?slim=true) | ![confidence](https://developer.mend.io/api/mc/badges/confidence/pypi/black/25.12.0/26.1.0?slim=true) | --- ### Release Notes <details> <summary>psf/black (black)</summary> ### [`v26.1.0`](https://github.com/psf/black/blob/HEAD/CHANGES.md#2610) [Compare Source](psf/black@25.12.0...26.1.0) ##### Highlights Introduces the 2026 stable style ([#4892](psf/black#4892)), stabilizing the following changes: - `always_one_newline_after_import`: Always force one blank line after import statements, except when the line after the import is a comment or an import statement ([#4489](psf/black#4489)) - `fix_fmt_skip_in_one_liners`: Fix `# fmt: skip` behavior on one-liner declarations, such as `def foo(): return "mock" # fmt: skip`, where previously the declaration would have been incorrectly collapsed ([#4800](psf/black#4800)) - `fix_module_docstring_detection`: Fix module docstrings being treated as normal strings if preceded by comments ([#4764](psf/black#4764)) - `fix_type_expansion_split`: Fix type expansions split in generic functions ([#4777](psf/black#4777)) - `multiline_string_handling`: Make expressions involving multiline strings more compact ([#1879](psf/black#1879)) - `normalize_cr_newlines`: Add `\r` style newlines to the potential newlines to normalize file newlines both from and to ([#4710](psf/black#4710)) - `remove_parens_around_except_types`: Remove parentheses around multiple exception types in `except` and `except*` without `as` ([#4720](psf/black#4720)) - `remove_parens_from_assignment_lhs`: Remove unnecessary parentheses from the left-hand side of assignments while preserving magic trailing commas and intentional multiline formatting ([#4865](psf/black#4865)) - `standardize_type_comments`: Format type comments which have zero or more spaces between `#` and `type:` or between `type:` and value to `# type: (value)` ([#4645](psf/black#4645)) The following change was not in any previous stable release: - Regenerated the `_width_table.py` and added tests for the Khmer language ([#4253](psf/black#4253)) This release alo bumps `pathspec` to v1 and fixes inconsistencies with Git's `.gitignore` logic ([#4958](psf/black#4958)). Now, files will be ignored if a pattern matches them, even if the parent directory is directly unignored. For example, Black would previously format `exclude/not_this/foo.py` with this `.gitignore`: ``` exclude/ !exclude/not_this/ ``` Now, `exclude/not_this/foo.py` will remain ignored. To ensure `exclude/not_this/` and all of it's children are included in formatting (and in Git), use this `.gitignore`: ``` */exclude/* !*/exclude/not_this/ ``` This new behavior matches Git. The leading `*/` are only necessary if you wish to ignore matching subdirectories (like the previous behavior did), and not just matching root directories. ##### Output - Explicitly shutdown the multiprocessing manager when run in diff mode too ([#4952](psf/black#4952)) ##### Integrations - Upgraded PyPI upload workflow to use Trusted Publishing ([#4611](psf/black#4611)) </details> --- ### Configuration 📅 **Schedule**: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined). 🚦 **Automerge**: Disabled by config. Please merge this manually once you are satisfied. ♻ **Rebasing**: Whenever PR is behind base branch, or you tick the rebase/retry checkbox. 🔕 **Ignore**: Close this PR and you won't be reminded about this update again. --- - [ ] If you want to rebase/retry this PR, check this box --- This PR has been generated by [Renovate Bot](https://github.com/renovatebot/renovate).  Reviewed-on: https://git.tainton.uk/repos/epage/pulls/191 Co-authored-by: renovate[bot] <[email protected]> Co-committed-by: renovate[bot] <[email protected]>

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This PR contains the following updates: | Package | Change | [Age](https://docs.renovatebot.com/merge-confidence/) | [Confidence](https://docs.renovatebot.com/merge-confidence/) | |---|---|---|---| | [black](https://github.com/psf/black) ([changelog](https://github.com/psf/black/blob/main/CHANGES.md)) | `<25.12.1,>=25.12.0` → `<26.1.1,>=26.1.0` | ![age](https://developer.mend.io/api/mc/badges/age/pypi/black/26.1.0?slim=true) | ![confidence](https://developer.mend.io/api/mc/badges/confidence/pypi/black/25.12.0/26.1.0?slim=true) | --- ### Release Notes <details> <summary>psf/black (black)</summary> ### [`v26.1.0`](https://github.com/psf/black/blob/HEAD/CHANGES.md#2610) [Compare Source](psf/black@25.12.0...26.1.0) ##### Highlights Introduces the 2026 stable style ([#4892](psf/black#4892)), stabilizing the following changes: - `always_one_newline_after_import`: Always force one blank line after import statements, except when the line after the import is a comment or an import statement ([#4489](psf/black#4489)) - `fix_fmt_skip_in_one_liners`: Fix `# fmt: skip` behavior on one-liner declarations, such as `def foo(): return "mock" # fmt: skip`, where previously the declaration would have been incorrectly collapsed ([#4800](psf/black#4800)) - `fix_module_docstring_detection`: Fix module docstrings being treated as normal strings if preceded by comments ([#4764](psf/black#4764)) - `fix_type_expansion_split`: Fix type expansions split in generic functions ([#4777](psf/black#4777)) - `multiline_string_handling`: Make expressions involving multiline strings more compact ([#1879](psf/black#1879)) - `normalize_cr_newlines`: Add `\r` style newlines to the potential newlines to normalize file newlines both from and to ([#4710](psf/black#4710)) - `remove_parens_around_except_types`: Remove parentheses around multiple exception types in `except` and `except*` without `as` ([#4720](psf/black#4720)) - `remove_parens_from_assignment_lhs`: Remove unnecessary parentheses from the left-hand side of assignments while preserving magic trailing commas and intentional multiline formatting ([#4865](psf/black#4865)) - `standardize_type_comments`: Format type comments which have zero or more spaces between `#` and `type:` or between `type:` and value to `# type: (value)` ([#4645](psf/black#4645)) The following change was not in any previous stable release: - Regenerated the `_width_table.py` and added tests for the Khmer language ([#4253](psf/black#4253)) This release alo bumps `pathspec` to v1 and fixes inconsistencies with Git's `.gitignore` logic ([#4958](psf/black#4958)). Now, files will be ignored if a pattern matches them, even if the parent directory is directly unignored. For example, Black would previously format `exclude/not_this/foo.py` with this `.gitignore`: ``` exclude/ !exclude/not_this/ ``` Now, `exclude/not_this/foo.py` will remain ignored. To ensure `exclude/not_this/` and all of it's children are included in formatting (and in Git), use this `.gitignore`: ``` */exclude/* !*/exclude/not_this/ ``` This new behavior matches Git. The leading `*/` are only necessary if you wish to ignore matching subdirectories (like the previous behavior did), and not just matching root directories. ##### Output - Explicitly shutdown the multiprocessing manager when run in diff mode too ([#4952](psf/black#4952)) ##### Integrations - Upgraded PyPI upload workflow to use Trusted Publishing ([#4611](psf/black#4611)) </details> --- ### Configuration 📅 **Schedule**: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined). 🚦 **Automerge**: Disabled by config. Please merge this manually once you are satisfied. ♻ **Rebasing**: Whenever PR is behind base branch, or you tick the rebase/retry checkbox. 🔕 **Ignore**: Close this PR and you won't be reminded about this update again. --- - [ ] If you want to rebase/retry this PR, check this box --- This PR has been generated by [Renovate Bot](https://github.com/renovatebot/renovate).  Reviewed-on: https://git.tainton.uk/repos/roboluke/pulls/409 Co-authored-by: renovate[bot] <[email protected]> Co-committed-by: renovate[bot] <[email protected]>

This PR contains the following updates: | Package | Change | [Age](https://docs.renovatebot.com/merge-confidence/) | [Confidence](https://docs.renovatebot.com/merge-confidence/) | |---|---|---|---| | [black](https://github.com/psf/black) ([changelog](https://github.com/psf/black/blob/main/CHANGES.md)) | `<25.12.1,>=25.12.0` → `<26.1.1,>=26.1.0` | ![age](https://developer.mend.io/api/mc/badges/age/pypi/black/26.1.0?slim=true) | ![confidence](https://developer.mend.io/api/mc/badges/confidence/pypi/black/25.12.0/26.1.0?slim=true) | --- ### Release Notes <details> <summary>psf/black (black)</summary> ### [`v26.1.0`](https://github.com/psf/black/blob/HEAD/CHANGES.md#2610) [Compare Source](psf/black@25.12.0...26.1.0) ##### Highlights Introduces the 2026 stable style ([#4892](psf/black#4892)), stabilizing the following changes: - `always_one_newline_after_import`: Always force one blank line after import statements, except when the line after the import is a comment or an import statement ([#4489](psf/black#4489)) - `fix_fmt_skip_in_one_liners`: Fix `# fmt: skip` behavior on one-liner declarations, such as `def foo(): return "mock" # fmt: skip`, where previously the declaration would have been incorrectly collapsed ([#4800](psf/black#4800)) - `fix_module_docstring_detection`: Fix module docstrings being treated as normal strings if preceded by comments ([#4764](psf/black#4764)) - `fix_type_expansion_split`: Fix type expansions split in generic functions ([#4777](psf/black#4777)) - `multiline_string_handling`: Make expressions involving multiline strings more compact ([#1879](psf/black#1879)) - `normalize_cr_newlines`: Add `\r` style newlines to the potential newlines to normalize file newlines both from and to ([#4710](psf/black#4710)) - `remove_parens_around_except_types`: Remove parentheses around multiple exception types in `except` and `except*` without `as` ([#4720](psf/black#4720)) - `remove_parens_from_assignment_lhs`: Remove unnecessary parentheses from the left-hand side of assignments while preserving magic trailing commas and intentional multiline formatting ([#4865](psf/black#4865)) - `standardize_type_comments`: Format type comments which have zero or more spaces between `#` and `type:` or between `type:` and value to `# type: (value)` ([#4645](psf/black#4645)) The following change was not in any previous stable release: - Regenerated the `_width_table.py` and added tests for the Khmer language ([#4253](psf/black#4253)) This release alo bumps `pathspec` to v1 and fixes inconsistencies with Git's `.gitignore` logic ([#4958](psf/black#4958)). Now, files will be ignored if a pattern matches them, even if the parent directory is directly unignored. For example, Black would previously format `exclude/not_this/foo.py` with this `.gitignore`: ``` exclude/ !exclude/not_this/ ``` Now, `exclude/not_this/foo.py` will remain ignored. To ensure `exclude/not_this/` and all of it's children are included in formatting (and in Git), use this `.gitignore`: ``` */exclude/* !*/exclude/not_this/ ``` This new behavior matches Git. The leading `*/` are only necessary if you wish to ignore matching subdirectories (like the previous behavior did), and not just matching root directories. ##### Output - Explicitly shutdown the multiprocessing manager when run in diff mode too ([#4952](psf/black#4952)) ##### Integrations - Upgraded PyPI upload workflow to use Trusted Publishing ([#4611](psf/black#4611)) </details> --- ### Configuration 📅 **Schedule**: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined). 🚦 **Automerge**: Disabled by config. Please merge this manually once you are satisfied. ♻ **Rebasing**: Whenever PR is behind base branch, or you tick the rebase/retry checkbox. 🔕 **Ignore**: Close this PR and you won't be reminded about this update again. --- - [ ] If you want to rebase/retry this PR, check this box --- This PR has been generated by [Renovate Bot](https://github.com/renovatebot/renovate).  Reviewed-on: https://git.tainton.uk/repos/pypilot/pulls/408 Co-authored-by: renovate[bot] <[email protected]> Co-committed-by: renovate[bot] <[email protected]>

This PR contains the following updates: | Package | Change | [Age](https://docs.renovatebot.com/merge-confidence/) | [Confidence](https://docs.renovatebot.com/merge-confidence/) | |---|---|---|---| | [black](https://github.com/psf/black) ([changelog](https://github.com/psf/black/blob/main/CHANGES.md)) | `<25.12.1,>=25.12.0` → `<26.1.1,>=26.1.0` | ![age](https://developer.mend.io/api/mc/badges/age/pypi/black/26.1.0?slim=true) | ![confidence](https://developer.mend.io/api/mc/badges/confidence/pypi/black/25.12.0/26.1.0?slim=true) | --- ### Release Notes <details> <summary>psf/black (black)</summary> ### [`v26.1.0`](https://github.com/psf/black/blob/HEAD/CHANGES.md#2610) [Compare Source](psf/black@25.12.0...26.1.0) ##### Highlights Introduces the 2026 stable style ([#4892](psf/black#4892)), stabilizing the following changes: - `always_one_newline_after_import`: Always force one blank line after import statements, except when the line after the import is a comment or an import statement ([#4489](psf/black#4489)) - `fix_fmt_skip_in_one_liners`: Fix `# fmt: skip` behavior on one-liner declarations, such as `def foo(): return "mock" # fmt: skip`, where previously the declaration would have been incorrectly collapsed ([#4800](psf/black#4800)) - `fix_module_docstring_detection`: Fix module docstrings being treated as normal strings if preceded by comments ([#4764](psf/black#4764)) - `fix_type_expansion_split`: Fix type expansions split in generic functions ([#4777](psf/black#4777)) - `multiline_string_handling`: Make expressions involving multiline strings more compact ([#1879](psf/black#1879)) - `normalize_cr_newlines`: Add `\r` style newlines to the potential newlines to normalize file newlines both from and to ([#4710](psf/black#4710)) - `remove_parens_around_except_types`: Remove parentheses around multiple exception types in `except` and `except*` without `as` ([#4720](psf/black#4720)) - `remove_parens_from_assignment_lhs`: Remove unnecessary parentheses from the left-hand side of assignments while preserving magic trailing commas and intentional multiline formatting ([#4865](psf/black#4865)) - `standardize_type_comments`: Format type comments which have zero or more spaces between `#` and `type:` or between `type:` and value to `# type: (value)` ([#4645](psf/black#4645)) The following change was not in any previous stable release: - Regenerated the `_width_table.py` and added tests for the Khmer language ([#4253](psf/black#4253)) This release alo bumps `pathspec` to v1 and fixes inconsistencies with Git's `.gitignore` logic ([#4958](psf/black#4958)). Now, files will be ignored if a pattern matches them, even if the parent directory is directly unignored. For example, Black would previously format `exclude/not_this/foo.py` with this `.gitignore`: ``` exclude/ !exclude/not_this/ ``` Now, `exclude/not_this/foo.py` will remain ignored. To ensure `exclude/not_this/` and all of it's children are included in formatting (and in Git), use this `.gitignore`: ``` */exclude/* !*/exclude/not_this/ ``` This new behavior matches Git. The leading `*/` are only necessary if you wish to ignore matching subdirectories (like the previous behavior did), and not just matching root directories. ##### Output - Explicitly shutdown the multiprocessing manager when run in diff mode too ([#4952](psf/black#4952)) ##### Integrations - Upgraded PyPI upload workflow to use Trusted Publishing ([#4611](psf/black#4611)) </details> --- ### Configuration 📅 **Schedule**: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined). 🚦 **Automerge**: Disabled by config. Please merge this manually once you are satisfied. ♻ **Rebasing**: Whenever PR is behind base branch, or you tick the rebase/retry checkbox. 🔕 **Ignore**: Close this PR and you won't be reminded about this update again. --- - [ ] If you want to rebase/retry this PR, check this box --- This PR has been generated by [Renovate Bot](https://github.com/renovatebot/renovate).  Reviewed-on: https://git.tainton.uk/luke/instant-msg-api/pulls/236 Co-authored-by: renovate[bot] <[email protected]> Co-committed-by: renovate[bot] <[email protected]>

This PR contains the following updates: | Package | Change | [Age](https://docs.renovatebot.com/merge-confidence/) | [Confidence](https://docs.renovatebot.com/merge-confidence/) | |---|---|---|---| | [black](https://github.com/psf/black) ([changelog](https://github.com/psf/black/blob/main/CHANGES.md)) | `<25.12.1,>=25.12.0` → `<26.1.1,>=26.1.0` | ![age](https://developer.mend.io/api/mc/badges/age/pypi/black/26.1.0?slim=true) | ![confidence](https://developer.mend.io/api/mc/badges/confidence/pypi/black/25.12.0/26.1.0?slim=true) | --- ### Release Notes <details> <summary>psf/black (black)</summary> ### [`v26.1.0`](https://github.com/psf/black/blob/HEAD/CHANGES.md#2610) [Compare Source](psf/black@25.12.0...26.1.0) ##### Highlights Introduces the 2026 stable style ([#4892](psf/black#4892)), stabilizing the following changes: - `always_one_newline_after_import`: Always force one blank line after import statements, except when the line after the import is a comment or an import statement ([#4489](psf/black#4489)) - `fix_fmt_skip_in_one_liners`: Fix `# fmt: skip` behavior on one-liner declarations, such as `def foo(): return "mock" # fmt: skip`, where previously the declaration would have been incorrectly collapsed ([#4800](psf/black#4800)) - `fix_module_docstring_detection`: Fix module docstrings being treated as normal strings if preceded by comments ([#4764](psf/black#4764)) - `fix_type_expansion_split`: Fix type expansions split in generic functions ([#4777](psf/black#4777)) - `multiline_string_handling`: Make expressions involving multiline strings more compact ([#1879](psf/black#1879)) - `normalize_cr_newlines`: Add `\r` style newlines to the potential newlines to normalize file newlines both from and to ([#4710](psf/black#4710)) - `remove_parens_around_except_types`: Remove parentheses around multiple exception types in `except` and `except*` without `as` ([#4720](psf/black#4720)) - `remove_parens_from_assignment_lhs`: Remove unnecessary parentheses from the left-hand side of assignments while preserving magic trailing commas and intentional multiline formatting ([#4865](psf/black#4865)) - `standardize_type_comments`: Format type comments which have zero or more spaces between `#` and `type:` or between `type:` and value to `# type: (value)` ([#4645](psf/black#4645)) The following change was not in any previous stable release: - Regenerated the `_width_table.py` and added tests for the Khmer language ([#4253](psf/black#4253)) This release alo bumps `pathspec` to v1 and fixes inconsistencies with Git's `.gitignore` logic ([#4958](psf/black#4958)). Now, files will be ignored if a pattern matches them, even if the parent directory is directly unignored. For example, Black would previously format `exclude/not_this/foo.py` with this `.gitignore`: ``` exclude/ !exclude/not_this/ ``` Now, `exclude/not_this/foo.py` will remain ignored. To ensure `exclude/not_this/` and all of it's children are included in formatting (and in Git), use this `.gitignore`: ``` */exclude/* !*/exclude/not_this/ ``` This new behavior matches Git. The leading `*/` are only necessary if you wish to ignore matching subdirectories (like the previous behavior did), and not just matching root directories. ##### Output - Explicitly shutdown the multiprocessing manager when run in diff mode too ([#4952](psf/black#4952)) ##### Integrations - Upgraded PyPI upload workflow to use Trusted Publishing ([#4611](psf/black#4611)) </details> --- ### Configuration 📅 **Schedule**: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined). 🚦 **Automerge**: Disabled by config. Please merge this manually once you are satisfied. ♻ **Rebasing**: Whenever PR is behind base branch, or you tick the rebase/retry checkbox. 🔕 **Ignore**: Close this PR and you won't be reminded about this update again. --- - [ ] If you want to rebase/retry this PR, check this box --- This PR has been generated by [Renovate Bot](https://github.com/renovatebot/renovate).  Reviewed-on: https://git.tainton.uk/repos/PwnedPW/pulls/319 Co-authored-by: renovate[bot] <[email protected]> Co-committed-by: renovate[bot] <[email protected]>

This MR contains the following updates: | Package | Type | Update | Change | OpenSSF | |---|---|---|---|---| | [black](https://github.com/psf/black) ([changelog](https://github.com/psf/black/blob/main/CHANGES.md)) | dev | major | `^25.0.0` → `^26.0.0` | [![OpenSSF Scorecard](https://api.securityscorecards.dev/projects/github.com/psf/black/badge)](https://securityscorecards.dev/viewer/?uri=github.com/psf/black) | --- ### Release Notes <details> <summary>psf/black (black)</summary> ### [`v26.1.0`](https://github.com/psf/black/blob/HEAD/CHANGES.md#2610) [Compare Source](psf/black@25.12.0...26.1.0) ##### Highlights Introduces the 2026 stable style ([#4892](psf/black#4892)), stabilizing the following changes: - `always_one_newline_after_import`: Always force one blank line after import statements, except when the line after the import is a comment or an import statement ([#4489](psf/black#4489)) - `fix_fmt_skip_in_one_liners`: Fix `# fmt: skip` behavior on one-liner declarations, such as `def foo(): return "mock" # fmt: skip`, where previously the declaration would have been incorrectly collapsed ([#4800](psf/black#4800)) - `fix_module_docstring_detection`: Fix module docstrings being treated as normal strings if preceded by comments ([#4764](psf/black#4764)) - `fix_type_expansion_split`: Fix type expansions split in generic functions ([#4777](psf/black#4777)) - `multiline_string_handling`: Make expressions involving multiline strings more compact ([#1879](psf/black#1879)) - `normalize_cr_newlines`: Add `\r` style newlines to the potential newlines to normalize file newlines both from and to ([#4710](psf/black#4710)) - `remove_parens_around_except_types`: Remove parentheses around multiple exception types in `except` and `except*` without `as` ([#4720](psf/black#4720)) - `remove_parens_from_assignment_lhs`: Remove unnecessary parentheses from the left-hand side of assignments while preserving magic trailing commas and intentional multiline formatting ([#4865](psf/black#4865)) - `standardize_type_comments`: Format type comments which have zero or more spaces between `#` and `type:` or between `type:` and value to `# type: (value)` ([#4645](psf/black#4645)) The following change was not in any previous stable release: - Regenerated the `_width_table.py` and added tests for the Khmer language ([#4253](psf/black#4253)) This release alo bumps `pathspec` to v1 and fixes inconsistencies with Git's `.gitignore` logic ([#4958](psf/black#4958)). Now, files will be ignored if a pattern matches them, even if the parent directory is directly unignored. For example, Black would previously format `exclude/not_this/foo.py` with this `.gitignore`: ``` exclude/ !exclude/not_this/ ``` Now, `exclude/not_this/foo.py` will remain ignored. To ensure `exclude/not_this/` and all of it's children are included in formatting (and in Git), use this `.gitignore`: ``` */exclude/* !*/exclude/not_this/ ``` This new behavior matches Git. The leading `*/` are only necessary if you wish to ignore matching subdirectories (like the previous behavior did), and not just matching root directories. ##### Output - Explicitly shutdown the multiprocessing manager when run in diff mode too ([#4952](psf/black#4952)) ##### Integrations - Upgraded PyPI upload workflow to use Trusted Publishing ([#4611](psf/black#4611)) </details> --- - [ ] If you want to rebase/retry this MR, check this box --- This MR has been generated by [Renovate Bot](https://github.com/renovatebot/renovate).  See merge request swiss-armed-forces/cyber-command/cea/loom!275 Co-authored-by: Loom MR Pipeline Trigger <group_103951964_bot_9504bb8dead6d4e406ad817a607f24be@noreply.gitlab.com>

chore(deps): update black (major) This MR contains the following updates: | Package | Type | Update | Change | OpenSSF | |---|---|---|---|---| | [black](https://github.com/psf/black) ([changelog](https://github.com/psf/black/blob/main/CHANGES.md)) | dev | major | `^25.0.0` → `^26.0.0` | [![OpenSSF Scorecard](https://api.securityscorecards.dev/projects/github.com/psf/black/badge)](https://securityscorecards.dev/viewer/?uri=github.com/psf/black) | --- ### Release Notes <details> <summary>psf/black (black)</summary> ### [`v26.1.0`](https://github.com/psf/black/blob/HEAD/CHANGES.md#2610) [Compare Source](psf/black@25.12.0...26.1.0) ##### Highlights Introduces the 2026 stable style ([#4892](psf/black#4892)), stabilizing the following changes: - `always_one_newline_after_import`: Always force one blank line after import statements, except when the line after the import is a comment or an import statement ([#4489](psf/black#4489)) - `fix_fmt_skip_in_one_liners`: Fix `# fmt: skip` behavior on one-liner declarations, such as `def foo(): return "mock" # fmt: skip`, where previously the declaration would have been incorrectly collapsed ([#4800](psf/black#4800)) - `fix_module_docstring_detection`: Fix module docstrings being treated as normal strings if preceded by comments ([#4764](psf/black#4764)) - `fix_type_expansion_split`: Fix type expansions split in generic functions ([#4777](psf/black#4777)) - `multiline_string_handling`: Make expressions involving multiline strings more compact ([#1879](psf/black#1879)) - `normalize_cr_newlines`: Add `\r` style newlines to the potential newlines to normalize file newlines both from and to ([#4710](psf/black#4710)) - `remove_parens_around_except_types`: Remove parentheses around multiple exception types in `except` and `except*` without `as` ([#4720](psf/black#4720)) - `remove_parens_from_assignment_lhs`: Remove unnecessary parentheses from the left-hand side of assignments while preserving magic trailing commas and intentional multiline formatting ([#4865](psf/black#4865)) - `standardize_type_comments`: Format type comments which have zero or more spaces between `#` and `type:` or between `type:` and value to `# type: (value)` ([#4645](psf/black#4645)) The following change was not in any previous stable release: - Regenerated the `_width_table.py` and added tests for the Khmer language ([#4253](psf/black#4253)) This release alo bumps `pathspec` to v1 and fixes inconsistencies with Git's `.gitignore` logic ([#4958](psf/black#4958)). Now, files will be ignored if a pattern matches them, even if the parent directory is directly unignored. For example, Black would previously format `exclude/not_this/foo.py` with this `.gitignore`: ``` exclude/ !exclude/not_this/ ``` Now, `exclude/not_this/foo.py` will remain ignored. To ensure `exclude/not_this/` and all of it's children are included in formatting (and in Git), use this `.gitignore`: ``` */exclude/* !*/exclude/not_this/ ``` This new behavior matches Git. The leading `*/` are only necessary if you wish to ignore matching subdirectories (like the previous behavior did), and not just matching root directories. ##### Output - Explicitly shutdown the multiprocessing manager when run in diff mode too ([#4952](psf/black#4952)) ##### Integrations - Upgraded PyPI upload workflow to use Trusted Publishing ([#4611](psf/black#4611)) </details> --- - [ ] If you want to rebase/retry this MR, check this box --- This MR has been generated by [Renovate Bot](https://github.com/renovatebot/renovate).  See merge request swiss-armed-forces/cyber-command/cea/loom!275 Co-authored-by: Loom MR Pipeline Trigger <group_103951964_bot_9504bb8dead6d4e406ad817a607f24be@noreply.gitlab.com> Co-authored-by: open-source Pipeline <group_90701827_bot_ed04ae348bc5f40af9966fb8b6867e99@noreply.gitlab.com>

nileshsingal added 2 commits January 11, 2026 03:56

Shutdown multiprocessing Manager in schedule_formatting

30609a2

Fix mypy annotations in concurrency manager shutdown test

0231bea

cobaltt7 mentioned this pull request Jan 12, 2026

Fix multiprocessing.Manager resource leak in concurrent diff processing #4953

Closed

Update changelog for psf#4952

dbe3030

Merge branch 'main' into fix-4950-manager-shutdown

45bd477

cobaltt7 merged commit 21a2a8c into psf:main Jan 16, 2026
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Fix Shutdown multiprocessing Manager in schedule_formatting#4952

Fix Shutdown multiprocessing Manager in schedule_formatting#4952
cobaltt7 merged 4 commits intopsf:mainfrom
nileshsingal:fix-4950-manager-shutdown

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