AttributeError: 'CachedResponse' object has no attribute 'method'

[simon-liebehenschel]

I got the error in CI, but I can not reproduce it locally yet:

    async with self.session.request(**kwargs) as response:  # type: ignore[union-attr]
/opt/pysetup/.venv/lib/python3.10/site-packages/aiohttp/client.py:1141: in __aenter__
    self._resp = await self._coro
/opt/pysetup/.venv/lib/python3.10/site-packages/forge/_revision.py:322: in inner
    return await callable(*mapped.args, **mapped.kwargs)
/opt/pysetup/.venv/lib/python3.10/site-packages/aiohttp_client_cache/session.py:46: in _request
    response, actions = await self.cache.request(
/opt/pysetup/.venv/lib/python3.10/site-packages/aiohttp_client_cache/backends/base.py:127: in request
    response = None if actions.skip_read else await self.get_response(actions.key)
/opt/pysetup/.venv/lib/python3.10/site-packages/aiohttp_client_cache/backends/base.py:142: in get_response
    elif not await self.is_cacheable(response):  # type: ignore
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 
self = <aiohttp_client_cache.backends.sqlite.SQLiteBackend object at 0x7efdd1c84b20>
response = <[AttributeError("'CachedResponse' object has no attribute 'method'") raised in repr()] CachedResponse object at 0x7efdbdb2d380>
actions = None
    async def is_cacheable(
        self, response: Union[AnyResponse, None], actions: CacheActions = None
    ) -> bool:
        """Perform all checks needed to determine if the given response should be cached"""
        if not response:
            return False
    
        cache_criteria = {
            'disabled cache': self.disabled,
>           'disabled method': str(response.method) not in self.allowed_methods,
            'disabled status': response.status not in self.allowed_codes,
            'disabled by filter': not (
                await self.filter_fn(response)
                if inspect.iscoroutinefunction(self.filter_fn)
                else self.filter_fn(response)
            ),
            'disabled by headers or expiration params': actions and actions.skip_write,
            'expired': getattr(response, 'is_expired', False),
        }
E       AttributeError: 'CachedResponse' object has no attribute 'method'
/opt/pysetup/.venv/lib/python3.10/site-packages/aiohttp_client_cache/backends/base.py:86: AttributeError

• aiohttp-client-cache 0.7.3
• aiohttp 3.8.3
• Python 3.10.9

I believe I will find the reason, but are there any suggestions? Are there any rare conditions when "aiohttp-client-cache" may try to access a non-existing method attribute?

[JWCook]

I believe this is due to some changes in the attrs library; see #140. I'll get that fixed soon.

Meanwhile, a workaround is to either clear the cache or pin attrs<=22.1.

[JWCook]

This has been fixed in 0.8.0.