TypeError: unsupported operand type(s) for |: 'type' and 'type' in group plugin #6166
Description
Context
mkdocs-material 9.4.4+insiders.4.42.1
Bug description
The group plugin has this code in config.py:
plugins = Type(list | dict)Even though it does import from __future__ import annotations, it's not enough to patch the runtime interpreter: types still can't be ORed with the pipe syntax at runtime on Python less than 3.10.
Using Type(Union[list, dict]) instead does not fix the issue. Without future annotations in group/plugin.py:
File "/media/data/dev/copier-pdm/tests/tmp/__pypackages__/3.8/lib/material/plugins/group/plugin.py", line 36, in <module>
class GroupPlugin(BasePlugin[GroupConfig]):
File "/media/data/dev/copier-pdm/tests/tmp/__pypackages__/3.8/lib/material/plugins/group/plugin.py", line 120, in GroupPlugin
def _patch(self, methods: list[Callable], config: MkDocsConfig):
TypeError: 'type' object is not subscriptableWith future annotations:
File "/media/data/dev/copier-pdm/tests/tmp/__pypackages__/3.8/lib/mkdocs/plugins.py", line 97, in load_config
return self.config.validate()
File "/media/data/dev/copier-pdm/tests/tmp/__pypackages__/3.8/lib/mkdocs/config/base.py", line 230, in validate
run_failed, run_warnings = self._validate()
File "/media/data/dev/copier-pdm/tests/tmp/__pypackages__/3.8/lib/mkdocs/config/base.py", line 188, in _validate
self[key] = config_option.validate(value)
File "/media/data/dev/copier-pdm/tests/tmp/__pypackages__/3.8/lib/mkdocs/config/config_options.py", line 182, in validate
return self.run_validation(value)
File "/media/data/dev/copier-pdm/tests/tmp/__pypackages__/3.8/lib/mkdocs/config/config_options.py", line 340, in run_validation
if not isinstance(value, self._type):
File "/home/pawamoy/.basher-packages/pyenv/pyenv/versions/3.8.18/lib/python3.8/typing.py", line 769, in __instancecheck__
return self.__subclasscheck__(type(obj))
File "/home/pawamoy/.basher-packages/pyenv/pyenv/versions/3.8.18/lib/python3.8/typing.py", line 777, in __subclasscheck__
raise TypeError("Subscripted generics cannot be used with"
TypeError: Subscripted generics cannot be used with class and instance checksSee discussion in MkDocs: mkdocs/mkdocs#3417
Related links
Reproduction
9.4.4+insiders.4.42.1-type-error-list-or-dict.zip
Steps to reproduce
With 3.9:
$ python3.9
Python 3.9.18 (main, Aug 26 2023, 14:52:42)
[GCC 13.2.1 20230801] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> from material.plugins.group import config
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/media/data/dev/copier-pdm/tests/tmp/__pypackages__/3.9/lib/material/plugins/group/config.py", line 31, in <module>
class GroupConfig(Config):
File "/media/data/dev/copier-pdm/tests/tmp/__pypackages__/3.9/lib/material/plugins/group/config.py", line 33, in GroupConfig
plugins = Type(list | dict)
TypeError: unsupported operand type(s) for |: 'type' and 'type'With 3.10:
$ python3.10
Python 3.10.13 (main, Aug 26 2023, 14:53:11) [GCC 13.2.1 20230801] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> from material.plugins.group import config
>>>Browser
No response
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