Thanks for the request!

This will require some investigation. Current Python 3.10 tests fail with

ERROR: No matching distribution found for Fiona==1.8.20

https://source.cloud.google.com/results/invocations/5f015b38-5fa3-4c33-9d7e-729756858ac5/targets/cloud-devrel%2Fclient-libraries%2Fpython%2Fgoogleapis%2Fpython-bigquery-sqlalchemy%2Fsamples%2Fpython3.10%2Fcontinuous/log

@tswast Is there a reason the versions in here are hard-coded?

• https://github.com/googleapis/python-bigquery-sqlalchemy/blob/6e2fa4925b5407c9d7d66f5840d51e9bf44f5008/samples/snippets/requirements.txt
• https://github.com/googleapis/python-bigquery-sqlalchemy/blob/6e2fa4925b5407c9d7d66f5840d51e9bf44f5008/samples/snippets/requirements-test.txt

I'm thinking of just making a patch to add requirements.in and requirements-test.in and then use pip-compile on those, any objections to this?

And just to clarify, if this is blocked because Fiona==1.8.20 does not support python 3.10 then it will never unblock because pypi version should be immutable, so ideally it should be Fiona in general, and the right way to then vary that is with pip-compile I think (or something more advanced).

I'm unclear on what Fiona was for, but test seem to pass for 3.10 if I make a requirements.txt from a sane requirements.in