Brian Phillips

> I can confirm that I am facing this issue on macOS Sonoma 14.0 with Python`3.10.13` (installed via [pyenv](https://github.com/pyenv/pyenv)). `aiohttp==3.8.6` and `asyncio==3.4.3` packages are using within my codebase. > >...

> How about [b129860](https://github.com/fsspec/filesystem_spec/commit/b1298609f437ea57c5a8c1fae18282969c484c7e) , does this doe everything, but without `type()` ? Hey @martindurant yes that commit looks great. Dropping the `@classmethod` decorator is much cleaner, thanks!

Also seeing this downloading large packages (~180MB) over slow network connections (~5MB/s)

Thank you for the discussion links. Some way to detect the nan beyond `np.isnan(df)` would certainly cover our use case. The discrepancy between `series.isna()` and `series.apply(pd.isna)` is also quite confusing.

I was able to workaround this by activating the environment dynamically, but this does feel like a bit of a hack since it doesn't guarantee that the environments are actually...