Suggestion: `pytest-vcr` for reliable testing

[jamesbraza]

I believe the test suite is actually making requests to Entrez each time it's run.

To fix this, I suggest using pytest-vcr, a pytest plug-in for caching the response of requests in a subfolder of the test folder.

It's very easy to use, and may help with the seeming flakiness of CI at the moment

[krassowski]

This is a good idea, though it would be best if one of the jobs was not cached (while the other were). Also, requests-cache may be preferable as it is a bit more established.

[jamesbraza]

Oh wow, requests-cache is a TIL for me, thanks!

And yeah, it's up to you, was just a suggestion as I noticed CI is somewhat flaky.

Maybe instead of caching for all but one job, it'd be more preferable to set up a weekly CI job using schedule that updates the cached responses.