⬆ Bump mypy from 1.18.2 to 1.19.0 - #1660

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Bumps mypy from 1.18.2 to 1.19.0.

Changelog

Sourced from mypy's changelog.

Mypy Release Notes

Next Release

Drop Support for Python 3.9

Mypy no longer supports running with Python 3.9, which has reached end-of-life. When running mypy with Python 3.10+, it is still possible to type check code that needs to support Python 3.9 with the --python-version 3.9 argument. Support for this will be dropped in the first half of 2026!

Contributed by Marc Mueller (PR 20156).

Mypy 1.19

We’ve just uploaded mypy 1.19.0 to the Python Package Index (PyPI). Mypy is a static type checker for Python. This release includes new features, performance improvements and bug fixes. You can install it as follows:

python3 -m pip install -U mypy

You can read the full documentation for this release on Read the Docs.

Python 3.9 Support Ending Soon

This is the last mypy feature release that supports Python 3.9, which reached end of life in October 2025.

Performance Improvements

  • Switch to a more dynamic SCC processing logic (Ivan Levkivskyi, PR 20053)
  • Speed up type aliases (Ivan Levkivskyi, PR 19810)

Fixed‑Format Cache Improvements

Mypy uses a cache by default to speed up incremental runs by reusing partial results from earlier runs. Mypy 1.18 added a new binary fixed-format cache representation as an experimental feature. The feature is no longer experimental, and we are planning to enable it by default in a future mypy release (possibly 1.20), since it's faster and uses less space than the original, JSON-based cache format. Use --fixed-format-cache to enable the fixed-format cache.

Mypy now has an extra dependency on the librt PyPI package, as it's needed for cache serialization and deserialization.

Mypy ships with a tool to convert fixed-format cache files to the old JSON format. Example of how to use this:

$ python -m mypy.exportjson .mypy_cache/.../my_module.data.ff

... (truncated)

Commits

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@dependabotdependabotBot added dependencies Pull requests that update a dependency file python Pull requests that update Python code labels Nov 28, 2025
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⬆ Bump mypy from 1.18.2 to 1.19.0
2ec710e
Bumps [mypy](https://github.com/python/mypy) from 1.18.2 to 1.19.0.
- [Changelog](https://github.com/python/mypy/blob/master/CHANGELOG.md)
- [Commits](python/mypy@v1.18.2...v1.19.0)
---
updated-dependencies:
- dependency-name: mypy
dependency-version: 1.19.0
dependency-type: direct:production
update-type: version-update:semver-minor
...
Signed-off-by: dependabot[bot] <support@github.com>
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Superseded by #1679.

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, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Add copy buttons to all 
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}
} catch(__e) { console.warn('[Userscript:Add Copy Buttons to Code Blocks]', __e); }
})();
(function(){
try {
var __m = "github.com";
var __re = new RegExp('^' + "github\\.com" + '

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⬆ Bump mypy from 1.18.2 to 1.19.0 - #1660
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Bumps mypy from 1.18.2 to 1.19.0.
Changelog
Sourced from mypy's changelog.
Mypy Release Notes
Next Release
Drop Support for Python 3.9
Mypy no longer supports running with Python 3.9, which has reached end-of-life.
When running mypy with Python 3.10+, it is still possible to type check code
that needs to support Python 3.9 with the --python-version 3.9 argument.
Support for this will be dropped in the first half of 2026!
Contributed by Marc Mueller (PR 20156).
Mypy 1.19
We’ve just uploaded mypy 1.19.0 to the Python Package Index (PyPI).
Mypy is a static type checker for Python. This release includes new features, performance
improvements and bug fixes. You can install it as follows:
python3 -m pip install -U mypy

You can read the full documentation for this release on Read the Docs.
Python 3.9 Support Ending Soon
This is the last mypy feature release that supports Python 3.9, which reached
end of life in October 2025.
Performance Improvements
  • Switch to a more dynamic SCC processing logic (Ivan Levkivskyi, PR 20053)
  • Speed up type aliases (Ivan Levkivskyi, PR 19810)
Fixed‑Format Cache Improvements
Mypy uses a cache by default to speed up incremental runs by reusing partial results
from earlier runs. Mypy 1.18 added a new binary fixed-format cache representation as
an experimental feature. The feature is no longer experimental, and we are planning
to enable it by default in a future mypy release (possibly 1.20), since it's faster
and uses less space than the original, JSON-based cache format. Use
--fixed-format-cache to enable the fixed-format cache.
Mypy now has an extra dependency on the librt PyPI package, as it's needed for
cache serialization and deserialization.
Mypy ships with a tool to convert fixed-format cache files to the old JSON format.
Example of how to use this:
$ python -m mypy.exportjson .mypy_cache/.../my_module.data.ff

... (truncated)
Commits

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⬆ Bump mypy from 1.18.2 to 1.19.0
2ec710e
Bumps [mypy](https://github.com/python/mypy) from 1.18.2 to 1.19.0.
- [Changelog](https://github.com/python/mypy/blob/master/CHANGELOG.md)
- [Commits](python/mypy@v1.18.2...v1.19.0)
---
updated-dependencies:
- dependency-name: mypy
dependency-version: 1.19.0
dependency-type: direct:production
update-type: version-update:semver-minor
...
Signed-off-by: dependabot[bot] <support@github.com>
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Superseded by #1679.
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, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Force GitHub README to respect dark mode\n(function() {\n var style = document.createElement('style');\n style.textContent = '\n .markdown-body {\n color-scheme: dark light;\n }\n .markdown-body pre { background: #161b22 !important; }\n .markdown-body code { background: rgba(110, 118, 129, 0.4) !important; }\n .markdown-body table th, .markdown-body table td { border-color: #30363d !important; }\n .markdown-body img { background: #0d1117; }\n .markdown-body blockquote { border-left-color: #8b949e; }\n .markdown-body hr { border-color: #30363d; }\n ';\n document.head.appendChild(style);\n})();", "GitHub Dark Mode README Fix");
}
} catch(__e) { console.warn('[Userscript:GitHub Dark Mode README Fix]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

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⬆ Bump mypy from 1.18.2 to 1.19.0 - #1660
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Bumps mypy from 1.18.2 to 1.19.0.
Changelog
Sourced from mypy's changelog.
Mypy Release Notes
Next Release
Drop Support for Python 3.9
Mypy no longer supports running with Python 3.9, which has reached end-of-life.
When running mypy with Python 3.10+, it is still possible to type check code
that needs to support Python 3.9 with the --python-version 3.9 argument.
Support for this will be dropped in the first half of 2026!
Contributed by Marc Mueller (PR 20156).
Mypy 1.19
We’ve just uploaded mypy 1.19.0 to the Python Package Index (PyPI).
Mypy is a static type checker for Python. This release includes new features, performance
improvements and bug fixes. You can install it as follows:
python3 -m pip install -U mypy

You can read the full documentation for this release on Read the Docs.
Python 3.9 Support Ending Soon
This is the last mypy feature release that supports Python 3.9, which reached
end of life in October 2025.
Performance Improvements
  • Switch to a more dynamic SCC processing logic (Ivan Levkivskyi, PR 20053)
  • Speed up type aliases (Ivan Levkivskyi, PR 19810)
Fixed‑Format Cache Improvements
Mypy uses a cache by default to speed up incremental runs by reusing partial results
from earlier runs. Mypy 1.18 added a new binary fixed-format cache representation as
an experimental feature. The feature is no longer experimental, and we are planning
to enable it by default in a future mypy release (possibly 1.20), since it's faster
and uses less space than the original, JSON-based cache format. Use
--fixed-format-cache to enable the fixed-format cache.
Mypy now has an extra dependency on the librt PyPI package, as it's needed for
cache serialization and deserialization.
Mypy ships with a tool to convert fixed-format cache files to the old JSON format.
Example of how to use this:
$ python -m mypy.exportjson .mypy_cache/.../my_module.data.ff

... (truncated)
Commits

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⬆ Bump mypy from 1.18.2 to 1.19.0
2ec710e
Bumps [mypy](https://github.com/python/mypy) from 1.18.2 to 1.19.0.
- [Changelog](https://github.com/python/mypy/blob/master/CHANGELOG.md)
- [Commits](python/mypy@v1.18.2...v1.19.0)
---
updated-dependencies:
- dependency-name: mypy
dependency-version: 1.19.0
dependency-type: direct:production
update-type: version-update:semver-minor
...
Signed-off-by: dependabot[bot] <support@github.com>
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Superseded by #1679.
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, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Highlight search terms from Google/DuckDuckGo/Bing referrer\n(function() {\n var ref = document.referrer;\n var terms = [];\n \n if (ref.includes('google.com') || ref.includes('duckduckgo.com') || ref.includes('bing.com')) {\n var url = new URL(ref);\n var q = url.searchParams.get('q') || url.searchParams.get('p');\n if (q) {\n terms = q.split(/\\s+/).filter(function(t) { return t.length > 2; });\n }\n }\n \n if (terms.length === 0) return;\n \n var style = document.createElement('style');\n style.textContent = '.userscript-highlight { background: #fbbf24; color: #1a1a2e; padding: 1px 3px; border-radius: 2px; }';\n document.head.appendChild(style);\n \n function highlight(node) {\n if (node.nodeType === 3) { // text node\n var text = node.textContent;\n var found = false;\n terms.forEach(function(term) {\n var regex = new RegExp('(' + term.replace(/[.*+?^${}()|[\\]\\\\]/g, '\\\\') + ')', 'gi');\n if (regex.test(text)) {\n found = true;\n var frag = document.createDocumentFragment();\n var parts = text.split(regex);\n parts.forEach(function(part, i) {\n if (i % 2 === 0) {\n frag.appendChild(document.createTextNode(part));\n } else {\n var span = document.createElement('span');\n span.className = 'userscript-highlight';\n span.textContent = part;\n frag.appendChild(span);\n }\n });\n node.parentNode.replaceChild(frag, node);\n }\n });\n } else if (node.nodeType === 1 && node.childNodes) { // element\n var skipTags = ['SCRIPT', 'STYLE', 'NOSCRIPT', 'TEXTAREA', 'INPUT', 'SELECT'];\n if (!skipTags.includes(node.tagName)) {\n Array.from(node.childNodes).forEach(highlight);\n }\n }\n }\n \n highlight(document.body);\n \n // Re-highlight on dynamic content\n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1 || node.nodeType === 3) highlight(node);\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Highlight Search Terms");
}
} catch(__e) { console.warn('[Userscript:Highlight Search Terms]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

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Bumps mypy from 1.18.2 to 1.19.0.
Changelog
Sourced from mypy's changelog.
Mypy Release Notes
Next Release
Drop Support for Python 3.9
Mypy no longer supports running with Python 3.9, which has reached end-of-life.
When running mypy with Python 3.10+, it is still possible to type check code
that needs to support Python 3.9 with the --python-version 3.9 argument.
Support for this will be dropped in the first half of 2026!
Contributed by Marc Mueller (PR 20156).
Mypy 1.19
We’ve just uploaded mypy 1.19.0 to the Python Package Index (PyPI).
Mypy is a static type checker for Python. This release includes new features, performance
improvements and bug fixes. You can install it as follows:
python3 -m pip install -U mypy

You can read the full documentation for this release on Read the Docs.
Python 3.9 Support Ending Soon
This is the last mypy feature release that supports Python 3.9, which reached
end of life in October 2025.
Performance Improvements
  • Switch to a more dynamic SCC processing logic (Ivan Levkivskyi, PR 20053)
  • Speed up type aliases (Ivan Levkivskyi, PR 19810)
Fixed‑Format Cache Improvements
Mypy uses a cache by default to speed up incremental runs by reusing partial results
from earlier runs. Mypy 1.18 added a new binary fixed-format cache representation as
an experimental feature. The feature is no longer experimental, and we are planning
to enable it by default in a future mypy release (possibly 1.20), since it's faster
and uses less space than the original, JSON-based cache format. Use
--fixed-format-cache to enable the fixed-format cache.
Mypy now has an extra dependency on the librt PyPI package, as it's needed for
cache serialization and deserialization.
Mypy ships with a tool to convert fixed-format cache files to the old JSON format.
Example of how to use this:
$ python -m mypy.exportjson .mypy_cache/.../my_module.data.ff

... (truncated)
Commits

Dependabot compatibility score
Dependabot will resolve any conflicts with this PR as long as you don't alter it yourself. You can also trigger a rebase manually by commenting @dependabot rebase.
Dependabot commands and options
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⬆ Bump mypy from 1.18.2 to 1.19.0
2ec710e
Bumps [mypy](https://github.com/python/mypy) from 1.18.2 to 1.19.0.
- [Changelog](https://github.com/python/mypy/blob/master/CHANGELOG.md)
- [Commits](python/mypy@v1.18.2...v1.19.0)
---
updated-dependencies:
- dependency-name: mypy
dependency-version: 1.19.0
dependency-type: direct:production
update-type: version-update:semver-minor
...
Signed-off-by: dependabot[bot] <support@github.com>
@dependabot
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Superseded by #1679.
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@tiangolo

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Strip utm_, fbclid, gclid, etc. from all links on page\n(function() {\n var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content',\n 'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid',\n 'ref', 'ref_src', 'source', 'medium', 'campaign'];\n \n function cleanUrl(url) {\n try {\n var u = new URL(url, window.location.origin);\n var changed = false;\n trackingParams.forEach(function(p) {\n if (u.searchParams.has(p)) {\n u.searchParams.delete(p);\n changed = true;\n }\n });\n return changed ? u.toString() : url;\n } catch (e) {\n return url;\n }\n }\n \n function cleanLinks() {\n document.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n \n cleanLinks();\n \n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1) {\n if (node.tagName === 'A') cleanLinks();\n node.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Remove Tracking Parameters from Links");
}
} catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); }
})();
(function(){
try {
var __m = "youtube.com";
var __re = new RegExp('^' + "youtube\\.com" + '

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⬆ Bump mypy from 1.18.2 to 1.19.0 - #1660
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Bumps mypy from 1.18.2 to 1.19.0.
Changelog
Sourced from mypy's changelog.
Mypy Release Notes
Next Release
Drop Support for Python 3.9
Mypy no longer supports running with Python 3.9, which has reached end-of-life.
When running mypy with Python 3.10+, it is still possible to type check code
that needs to support Python 3.9 with the --python-version 3.9 argument.
Support for this will be dropped in the first half of 2026!
Contributed by Marc Mueller (PR 20156).
Mypy 1.19
We’ve just uploaded mypy 1.19.0 to the Python Package Index (PyPI).
Mypy is a static type checker for Python. This release includes new features, performance
improvements and bug fixes. You can install it as follows:
python3 -m pip install -U mypy

You can read the full documentation for this release on Read the Docs.
Python 3.9 Support Ending Soon
This is the last mypy feature release that supports Python 3.9, which reached
end of life in October 2025.
Performance Improvements
  • Switch to a more dynamic SCC processing logic (Ivan Levkivskyi, PR 20053)
  • Speed up type aliases (Ivan Levkivskyi, PR 19810)
Fixed‑Format Cache Improvements
Mypy uses a cache by default to speed up incremental runs by reusing partial results
from earlier runs. Mypy 1.18 added a new binary fixed-format cache representation as
an experimental feature. The feature is no longer experimental, and we are planning
to enable it by default in a future mypy release (possibly 1.20), since it's faster
and uses less space than the original, JSON-based cache format. Use
--fixed-format-cache to enable the fixed-format cache.
Mypy now has an extra dependency on the librt PyPI package, as it's needed for
cache serialization and deserialization.
Mypy ships with a tool to convert fixed-format cache files to the old JSON format.
Example of how to use this:
$ python -m mypy.exportjson .mypy_cache/.../my_module.data.ff

... (truncated)
Commits

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⬆ Bump mypy from 1.18.2 to 1.19.0
2ec710e
Bumps [mypy](https://github.com/python/mypy) from 1.18.2 to 1.19.0.
- [Changelog](https://github.com/python/mypy/blob/master/CHANGELOG.md)
- [Commits](python/mypy@v1.18.2...v1.19.0)
---
updated-dependencies:
- dependency-name: mypy
dependency-version: 1.19.0
dependency-type: direct:production
update-type: version-update:semver-minor
...
Signed-off-by: dependabot[bot] <support@github.com>
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Superseded by #1679.
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@tiangolo

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Auto-enable theater mode on YouTube\n(function() {\n function tryTheater() {\n var btn = document.querySelector('button[aria-label=\"Theater mode\"], ytd-player #player button[title=\"Theater mode\"]');\n if (btn && !btn.classList.contains('activated')) {\n btn.click();\n }\n }\n \n // Try immediately\n tryTheater();\n \n // Try after navigation (SPA)\n var lastUrl = location.href;\n setInterval(function() {\n if (location.href !== lastUrl) {\n lastUrl = location.href;\n setTimeout(tryTheater, 500);\n }\n }, 1000);\n \n // Also try on player load\n var observer = new MutationObserver(tryTheater);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "YouTube Theater Mode Default");
}
} catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

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⬆ Bump mypy from 1.18.2 to 1.19.0 - #1660
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Bumps mypy from 1.18.2 to 1.19.0.
Changelog
Sourced from mypy's changelog.
Mypy Release Notes
Next Release
Drop Support for Python 3.9
Mypy no longer supports running with Python 3.9, which has reached end-of-life.
When running mypy with Python 3.10+, it is still possible to type check code
that needs to support Python 3.9 with the --python-version 3.9 argument.
Support for this will be dropped in the first half of 2026!
Contributed by Marc Mueller (PR 20156).
Mypy 1.19
We’ve just uploaded mypy 1.19.0 to the Python Package Index (PyPI).
Mypy is a static type checker for Python. This release includes new features, performance
improvements and bug fixes. You can install it as follows:
python3 -m pip install -U mypy

You can read the full documentation for this release on Read the Docs.
Python 3.9 Support Ending Soon
This is the last mypy feature release that supports Python 3.9, which reached
end of life in October 2025.
Performance Improvements
  • Switch to a more dynamic SCC processing logic (Ivan Levkivskyi, PR 20053)
  • Speed up type aliases (Ivan Levkivskyi, PR 19810)
Fixed‑Format Cache Improvements
Mypy uses a cache by default to speed up incremental runs by reusing partial results
from earlier runs. Mypy 1.18 added a new binary fixed-format cache representation as
an experimental feature. The feature is no longer experimental, and we are planning
to enable it by default in a future mypy release (possibly 1.20), since it's faster
and uses less space than the original, JSON-based cache format. Use
--fixed-format-cache to enable the fixed-format cache.
Mypy now has an extra dependency on the librt PyPI package, as it's needed for
cache serialization and deserialization.
Mypy ships with a tool to convert fixed-format cache files to the old JSON format.
Example of how to use this:
$ python -m mypy.exportjson .mypy_cache/.../my_module.data.ff

... (truncated)
Commits

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⬆ Bump mypy from 1.18.2 to 1.19.0
2ec710e
Bumps [mypy](https://github.com/python/mypy) from 1.18.2 to 1.19.0.
- [Changelog](https://github.com/python/mypy/blob/master/CHANGELOG.md)
- [Commits](python/mypy@v1.18.2...v1.19.0)
---
updated-dependencies:
- dependency-name: mypy
dependency-version: 1.19.0
dependency-type: direct:production
update-type: version-update:semver-minor
...
Signed-off-by: dependabot[bot] <support@github.com>
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Superseded by #1679.
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, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Remove or un-stick sticky/fixed headers that block content\n(function() {\n function unstick() {\n document.querySelectorAll('header, nav, [role=\"banner\"], .header, .navbar, .sticky, .fixed-top, [style*=\"position: fixed\"], [style*=\"position:sticky\"]').forEach(function(el) {\n if (el.style.position === 'fixed' || el.style.position === 'sticky' || \n getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') {\n el.style.position = 'static';\n el.style.top = 'auto';\n el.style.zIndex = 'auto';\n }\n });\n }\n \n unstick();\n \n var observer = new MutationObserver(unstick);\n observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] });\n})();", "Kill Sticky Headers");
}
} catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

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⬆ Bump mypy from 1.18.2 to 1.19.0 - #1660
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Bumps mypy from 1.18.2 to 1.19.0.
Changelog
Sourced from mypy's changelog.
Mypy Release Notes
Next Release
Drop Support for Python 3.9
Mypy no longer supports running with Python 3.9, which has reached end-of-life.
When running mypy with Python 3.10+, it is still possible to type check code
that needs to support Python 3.9 with the --python-version 3.9 argument.
Support for this will be dropped in the first half of 2026!
Contributed by Marc Mueller (PR 20156).
Mypy 1.19
We’ve just uploaded mypy 1.19.0 to the Python Package Index (PyPI).
Mypy is a static type checker for Python. This release includes new features, performance
improvements and bug fixes. You can install it as follows:
python3 -m pip install -U mypy

You can read the full documentation for this release on Read the Docs.
Python 3.9 Support Ending Soon
This is the last mypy feature release that supports Python 3.9, which reached
end of life in October 2025.
Performance Improvements
  • Switch to a more dynamic SCC processing logic (Ivan Levkivskyi, PR 20053)
  • Speed up type aliases (Ivan Levkivskyi, PR 19810)
Fixed‑Format Cache Improvements
Mypy uses a cache by default to speed up incremental runs by reusing partial results
from earlier runs. Mypy 1.18 added a new binary fixed-format cache representation as
an experimental feature. The feature is no longer experimental, and we are planning
to enable it by default in a future mypy release (possibly 1.20), since it's faster
and uses less space than the original, JSON-based cache format. Use
--fixed-format-cache to enable the fixed-format cache.
Mypy now has an extra dependency on the librt PyPI package, as it's needed for
cache serialization and deserialization.
Mypy ships with a tool to convert fixed-format cache files to the old JSON format.
Example of how to use this:
$ python -m mypy.exportjson .mypy_cache/.../my_module.data.ff

... (truncated)
Commits

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⬆ Bump mypy from 1.18.2 to 1.19.0
2ec710e
Bumps [mypy](https://github.com/python/mypy) from 1.18.2 to 1.19.0.
- [Changelog](https://github.com/python/mypy/blob/master/CHANGELOG.md)
- [Commits](python/mypy@v1.18.2...v1.19.0)
---
updated-dependencies:
- dependency-name: mypy
dependency-version: 1.19.0
dependency-type: direct:production
update-type: version-update:semver-minor
...
Signed-off-by: dependabot[bot] <support@github.com>
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Superseded by #1679.
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@tiangolo

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Universal Dark Mode - works on any site\n(function() {\n var enabled = true;\n \n function applyDarkMode() {\n if (!enabled) return;\n \n // Create style element if it doesn't exist\n var style = document.getElementById('universal-dark-mode-style');\n if (!style) {\n style = document.createElement('style');\n style.id = 'universal-dark-mode-style';\n document.head.appendChild(style);\n }\n \n // Dark mode CSS - inverts colors but preserves images/video\n style.textContent = '\n /* Invert everything except media */\n html {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #1a1a2e !important;\n }\n \n /* Restore images, videos, iframes, canvas */\n img, video, iframe, canvas, svg, picture, [style*=\"background-image\"] {\n filter: invert(1) hue-rotate(180deg) !important;\n }\n \n /* Preserve specific elements that should not be inverted */\n .no-dark-mode, .no-dark-mode *,\n [data-theme=\"light\"], [data-theme=\"light\"],\n .ace_editor, .ace_editor *,\n .CodeMirror, .CodeMirror *,\n .monaco-editor, .monaco-editor *,\n .markdown-body pre, .markdown-body pre *,\n .highlight, .highlight *,\n pre code, pre code * {\n filter: none !important;\n }\n \n /* Fix common UI elements */\n .modal, .popup, .dropdown-menu, .tooltip, .popover {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #2d2d44 !important;\n border-color: #444 !important;\n }\n \n /* Scrollbars */\n ::-webkit-scrollbar { background: #1a1a2e !important; }\n ::-webkit-scrollbar-thumb { background: #444 !important; }\n ::-webkit-scrollbar-thumb:hover { background: #555 !important; }\n \n /* Selection */\n ::selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ::-moz-selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ';\n }\n \n function removeDarkMode() {\n var style = document.getElementById('universal-dark-mode-style');\n if (style) style.remove();\n }\n \n // Toggle with Alt+Shift+D\n document.addEventListener('keydown', function(e) {\n if (e.altKey && e.shiftKey && e.key === 'D') {\n e.preventDefault();\n enabled = !enabled;\n if (enabled) {\n applyDarkMode();\n console.log('[Universal Dark Mode] Enabled');\n } else {\n removeDarkMode();\n console.log('[Universal Dark Mode] Disabled');\n }\n }\n });\n \n // Apply on load\n applyDarkMode();\n \n // Re-apply on dynamic content\n var observer = new MutationObserver(function(mutations) {\n if (enabled && !document.getElementById('universal-dark-mode-style')) {\n applyDarkMode();\n }\n });\n observer.observe(document.head, { childList: true });\n \n console.log('[Universal Dark Mode] Loaded - Press Alt+Shift+D to toggle');\n})();", "Universal Dark Mode");
}
} catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); }
})();
})();

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⬆ Bump mypy from 1.18.2 to 1.19.0 - #1660
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Bumps mypy from 1.18.2 to 1.19.0.
Changelog
Sourced from mypy's changelog.
Mypy Release Notes
Next Release
Drop Support for Python 3.9
Mypy no longer supports running with Python 3.9, which has reached end-of-life.
When running mypy with Python 3.10+, it is still possible to type check code
that needs to support Python 3.9 with the --python-version 3.9 argument.
Support for this will be dropped in the first half of 2026!
Contributed by Marc Mueller (PR 20156).
Mypy 1.19
We’ve just uploaded mypy 1.19.0 to the Python Package Index (PyPI).
Mypy is a static type checker for Python. This release includes new features, performance
improvements and bug fixes. You can install it as follows:
python3 -m pip install -U mypy

You can read the full documentation for this release on Read the Docs.
Python 3.9 Support Ending Soon
This is the last mypy feature release that supports Python 3.9, which reached
end of life in October 2025.
Performance Improvements
  • Switch to a more dynamic SCC processing logic (Ivan Levkivskyi, PR 20053)
  • Speed up type aliases (Ivan Levkivskyi, PR 19810)
Fixed‑Format Cache Improvements
Mypy uses a cache by default to speed up incremental runs by reusing partial results
from earlier runs. Mypy 1.18 added a new binary fixed-format cache representation as
an experimental feature. The feature is no longer experimental, and we are planning
to enable it by default in a future mypy release (possibly 1.20), since it's faster
and uses less space than the original, JSON-based cache format. Use
--fixed-format-cache to enable the fixed-format cache.
Mypy now has an extra dependency on the librt PyPI package, as it's needed for
cache serialization and deserialization.
Mypy ships with a tool to convert fixed-format cache files to the old JSON format.
Example of how to use this:
$ python -m mypy.exportjson .mypy_cache/.../my_module.data.ff

... (truncated)
Commits

Dependabot compatibility score
Dependabot will resolve any conflicts with this PR as long as you don't alter it yourself. You can also trigger a rebase manually by commenting @dependabot rebase.
Dependabot commands and options
You can trigger Dependabot actions by commenting on this PR:
  • @dependabot rebase will rebase this PR
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⬆ Bump mypy from 1.18.2 to 1.19.0
2ec710e
Bumps [mypy](https://github.com/python/mypy) from 1.18.2 to 1.19.0.
- [Changelog](https://github.com/python/mypy/blob/master/CHANGELOG.md)
- [Commits](python/mypy@v1.18.2...v1.19.0)
---
updated-dependencies:
- dependency-name: mypy
dependency-version: 1.19.0
dependency-type: direct:production
update-type: version-update:semver-minor
...
Signed-off-by: dependabot[bot] <support@github.com>
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Superseded by #1679.
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