8000 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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Update 'typing_extensions' to >=4.6.0 to fix python 3.12 error #17312

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merged 1 commit into from
Jun 2, 2024
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Update 'typing_extensions' to >=4.6.0 to fix python 3.12 error #17312

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Update 'typing_extensions' to >=4.6.0 to fix python 3.12 error 
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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@benjamb
benjamb committed Jun 2, 2024
commit 94d6028a2ee3a8fc4f29684e56fd9544d0d0ffd8
2 changes: 1 addition & 1 deletion mypy-requirements.txt
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Original file line number Diff line number Diff line change
@@ -1,4 +1,4 @@
# NOTE: this needs to be kept in sync with the "requires" list in pyproject.toml
typing_extensions>=4.1.0
typing_extensions>=4.6.0
mypy_extensions>=1.0.0
tomli>=1.1.0; python_version<'3.11'
2 changes: 1 addition & 1 deletion pyproject.toml
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Expand Up @@ -6,7 +6,7 @@ requires = [
"setuptools >= 40.6.2",
"wheel >= 0.30.0",
# the following is from mypy-requirements.txt
"typing_extensions>=4.1.0",
"typing_extensions>=4.6.0",
"mypy_extensions>=1.0.0",
"tomli>=1.1.0; python_version<'3.11'",
# the following is from build-requirements.txt
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