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Update 'typing_extensions' to >=4.6.0 to fix python 3.12 error by benjamb · Pull Request #17312 · python/mypy · GitHub
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@benjamb benjamb commented Jun 2, 2024

With earlier versions of typing_extensions, the following traceback is seen:

Traceback (most recent call last):
  File ".../bin/mypy", line 5, in <module>
    from mypy.__main__ import console_entry
  File ".../lib/python3.12/site-packages/mypy/__main__.py", line 9, in <module>
    from mypy.main import main, process_options
  File ".../lib/python3.12/site-packages/mypy/main.py", line 12, in <module>
    from typing_extensions import Final
  File ".../lib/python3.12/site-packages/typing_extensions.py", line 1174, in <module>
    class TypeVar(typing.TypeVar, _DefaultMixin, _root=True):
TypeError: type 'typing.TypeVar' is not an acceptable base type

The error is addressed in typing_extensions in
python/typing_extensions#162, which is included
in the 4.6.0 release.

(Explain how this PR changes mypy.)

With earlier versions of typing_extensions, the following traceback is
seen:

```
Traceback (most recent call last):
  File ".../bin/mypy", line 5, in <module>
    from mypy.__main__ import console_entry
  File ".../lib/python3.12/site-packages/mypy/__main__.py", line 9, in <module>
    from mypy.main import main, process_options
  File ".../lib/python3.12/site-packages/mypy/main.py", line 12, in <module>
    from typing_extensions import Final
  File ".../lib/python3.12/site-packages/typing_extensions.py", line 1174, in <module>
    class TypeVar(typing.TypeVar, _DefaultMixin, _root=True):
TypeError: type 'typing.TypeVar' is not an acceptable base type
```

The error is addressed in typing_extensions in
 python/typing_extensions#162, which is included
in the 4.6.0 release.
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github-actions bot commented Jun 2, 2024

According to mypy_primer, this change doesn't affect type check results on a corpus of open source code. ✅

@JelleZijlstra JelleZijlstra merged commit 2116386 into python:master Jun 2, 2024
JelleZijlstra pushed a commit that referenced this pull request Jun 2, 2024
…places (#17313)

Followup to #17312. (Can't say I fully understand why we have to have
this pin in three places :)
GiorgosPapoutsakis pushed a commit to GiorgosPapoutsakis/mypy that referenced this pull request Jun 3, 2024
…n#17312)

With earlier versions of typing_extensions, the following traceback is
seen:

```
Traceback (most recent call last):
  File ".../bin/mypy", line 5, in <module>
    from mypy.__main__ import console_entry
  File ".../lib/python3.12/site-packages/mypy/__main__.py", line 9, in <module>
    from mypy.main import main, process_options
  File ".../lib/python3.12/site-packages/mypy/main.py", line 12, in <module>
    from typing_extensions import Final
  File ".../lib/python3.12/site-packages/typing_extensions.py", line 1174, in <module>
    class TypeVar(typing.TypeVar, _DefaultMixin, _root=True):
TypeError: type 'typing.TypeVar' is not an acceptable base type
```

The error is addressed in typing_extensions in
 python/typing_extensions#162, which is included
in the 4.6.0 release.
GiorgosPapoutsakis pushed a commit to GiorgosPapoutsakis/mypy that referenced this pull request Jun 3, 2024
…places (python#17313)

Followup to python#17312. (Can't say I fully understand why we have to have
this pin in three places :)
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2 participants