pythonpython-attrs/cattrs #369Verified, not scored yet

Python 3.10 raises ModuleNotFoundError in cattrs/_compat.py

envgap__python-attrs__cattrs-369

Original GitHub issue ↗Dated source checkout ↗Opened 2023-05-30

01 / FAILURE SIGNATURE

As reported upstream

ModuleNotFoundError: No module named 'typing_extensions'```

Not scored yet.

The failure reproduces in a clean container and the known fix makes the project run; it has not been scored yet.

02 / ENVIRONMENT RECIPE

Base commit: 00932450fb27d8c6a53697244ae033b13916489b
Manifest: pyproject.toml
Reproduce: Awaiting issue-specific recipe
Run under trace: Awaiting a meaningful runtime command

03 / ORIGINAL ISSUE TEXT

python-attrs/cattrs #369 · read the original issue

* cattrs version: 23.1.0

* Python version: 3.10.4

* Operating System: linux





### Description



In python 3.10, the import of cattrs/_compat is throwing a ModuleNotFoundError.



### What I Did



An automated pipeline we are using started throwing a ModuleNotFoundError today. This appears to be related to #364, where the import is not catching the correct exceptions for importing typing_extensions.



```

Traceback (most recent call last):

  File "/builddir/.venv/bin/REDACTED", line 5, in <module>

    from REDACTED import main

  File "/builddir/.venv/lib/python3.10/site-packages/REDACTED/__init__.py", line 4, in <module>

    from requests_cache import CachedSession, DO_NOT_CACHE

  File "/builddir/.venv/lib/python3.10/site-packages/requests_cache/__init__.py", line 7, in <module>

    from .backends import *

  File "/builddir/.venv/lib/python3.10/site-packages/requests_cache/backends/__init__.py", line 7, in <module>

    from .base import BaseCache, BaseStorage, DictStorage

  File "/builddir/.venv/lib/python3.10/site-packages/requests_cache/backends/base.py", line 22, in <module>

    from ..serializers import SerializerType, init_serializer

  File "/builddir/.venv/lib/python3.10/site-packages/requests_cache/serializers/__init__.py", line 24, in <module>

    from .cattrs import CattrStage

  File "/builddir/.venv/lib/python3.10/site-packages/requests_cache/serializers/cattrs.py", line 19, in <module>

    from cattr import Converter

  File "/builddir/.venv/lib/python3.10/site-packages/cattr/__init__.py", line 1, in <module>

    from .converters import BaseConverter, Converter, GenConverter, UnstructureStrategy

  File "/builddir/.venv/lib/python3.10/site-packages/cattr/converters.py", line 1, in <module>

    from cattrs.converters import (

  File "/builddir/.venv/lib/python3.10/site-packages/cattrs/__init__.py", line 1, in <module>

    from .converters import BaseConverter, Converter, GenConverter, UnstructureStrategy

  File "/builddir/.venv/lib/python3.10/site-packages/cattrs/converters.py", line 26, in <module>

    from ._compat import (

  File "/builddir/.venv/lib/python3.10/site-packages/cattrs/_compat.py", line 372, in <module>

    from typing_extensions import NotRequired, Required

ModuleNotFoundError: No module named 'typing_extensions'```

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