Sourced from mypy's changelog.

Mypy Release Notes

Next Release

Mypy 1.16

We’ve just uploaded mypy 1.16 to the Python Package Index (PyPI). Mypy is a static type checker for Python. This release includes new features 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.

Different Property Getter and Setter Types

Mypy now supports using different types for a property getter and setter:

class A:
    _value: int
@property
def foo(self) -> int:
    return self._value
@foo.setter
def foo(self, x: str | int) -> None:
try:
self._value = int(x)
except ValueError:
raise Exception(f"'{x}' is not a valid value for 'foo'")

This was contributed by Ivan Levkivskyi (PR 18510).

Flexible Variable Redefinitions (Experimental)

Mypy now allows unannotated variables to be freely redefined with different types when using the experimental --allow-redefinition-new flag. You will also need to enable --local-partial-types. Mypy will now infer a union type when different types are assigned to a variable:

# mypy: allow-redefinition-new, local-partial-types
def f(n: int, b: bool) -> int | str:
if b:
x = n
else:
</tr></table>

... (truncated)

• 9e72e96 Update version to 1.16.0
• 8fe719f Add changelog for 1.16 (#19138)
• 2a036e7 Revert "Infer correct types with overloads of Type[Guard | Is] (#19161)
• b6da4fc Allow enum members to have type objects as values (#19160)
• 334469f [mypyc] Improve documentation of native and non-native classes (#19154)
• a499d9f Document --allow-redefinition-new (#19153)
• 96525a2 Merge commit '9e45dadcf6d8dbab36f83d9df94a706c0b4f9207' into release-1.16
• 9e45dad Clear more data in TypeChecker.reset() instead of asserting (#19087)
• 772cd0c Add --strict-bytes to --strict (#19049)
• 0b65f21 Admit that Final variables are never redefined (#19083)
• Additional commits viewable in compare view

Sourced from notebook's releases.

v7.4.3

7.4.3

(Full Changelog)

Maintenance and upkeep improvements

• Update to JupyterLab v4.4.3 #7653 (@​jtpio)

Contributors to this release

(GitHub contributors page for this release)

@​github-actions | @​jtpio | @​krassowski

v7.4.2

7.4.2

(Full Changelog)

Maintenance and upkeep improvements

• Update to JupyterLab v4.4.2 #7649 (@​jtpio)

Contributors to this release

(GitHub contributors page for this release)

@​github-actions | @​jtpio

Sourced from notebook's changelog.

7.4.3

(Full Changelog)

Maintenance and upkeep improvements

• Update to JupyterLab v4.4.3 #7653 (@​jtpio)

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(GitHub contributors page for this release)

@​github-actions | @​jtpio | @​krassowski

7.4.2

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Maintenance and upkeep improvements

• Update to JupyterLab v4.4.2 #7649 (@​jtpio)

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• f128f60 Publish 7.4.3
• 071d48a Update to JupyterLab v4.4.3 (#7653)
• 22aa6c2 Publish 7.4.2
• 0d8e60f Update to JupyterLab v4.4.2 (#7649)
• See full diff in compare view

Sourced from pytest-xdist's changelog.

pytest-xdist 3.7.0 (2025-05-26)

Features

• [#1142](https://github.com/pytest-dev/pytest-xdist/issues/1142) <https://github.com/pytest-dev/pytest-xdist/issues/1142>_: Added support for Python 3.13.

• [#1144](https://github.com/pytest-dev/pytest-xdist/issues/1144) <https://github.com/pytest-dev/pytest-xdist/issues/1144>_: The internal steal command is now atomic - it unschedules either all requested tests or none.

  This is a prerequisite for group/scope support in the worksteal scheduler, so test groups won't be broken up incorrectly.

• [#1170](https://github.com/pytest-dev/pytest-xdist/issues/1170) <https://github.com/pytest-dev/pytest-xdist/issues/1170>_: Add the --px arg to create proxy gateways.

  Proxy gateways are passed to additional gateways using the via keyword. They can serve as a way to run multiple workers on remote machines.

• [#1200](https://github.com/pytest-dev/pytest-xdist/issues/1200) <https://github.com/pytest-dev/pytest-xdist/issues/1200>_: Now multiple xdist_group markers are considered when assigning tests to groups (order does not matter).

  Previously, only the last marker would assign a test to a group, but now if a test has multiple xdist_group marks applied (for example via parametrization or via fixtures), they are merged to make a new group.

Removals

• [#1162](https://github.com/pytest-dev/pytest-xdist/issues/1162) <https://github.com/pytest-dev/pytest-xdist/issues/1162>_: Dropped support for EOL Python 3.8.

Trivial Changes

• [#1092](https://github.com/pytest-dev/pytest-xdist/issues/1092) <https://github.com/pytest-dev/pytest-xdist/issues/1092>_: Update an error message to better indicate where users should go for more information.

• [#1190](https://github.com/pytest-dev/pytest-xdist/issues/1190) <https://github.com/pytest-dev/pytest-xdist/issues/1190>_: Switched to using a SPDX license identifier introduced in PEP 639.

• b561916 Release 3.7.0
• 71bd3ed [pre-commit.ci] pre-commit autoupdate (#1204)
• 65de0ab Join multiple xdist_group markers (#1201)
• 199f949 [pre-commit.ci] pre-commit autoupdate (#1202)
• b0215da [pre-commit.ci] pre-commit autoupdate (#1199)
• 18e4785 [pre-commit.ci] pre-commit autoupdate (#1198)
• 731c05d [pre-commit.ci] pre-commit autoupdate (#1197)
• 16c5be3 [pre-commit.ci] pre-commit autoupdate (#1195)
• e03757a [pre-commit.ci] pre-commit autoupdate (#1193)
• f1d81a4 Merge pull request #1192 from adamchainz/document_disabling
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