Issue: type object 'Draft7Validator' has no attribute 'FORMAT_CHECKER'

[driadi]

Came here because I found this error when running Great Expectations and it seems that the issue occurred in v4.2.1.

I haven't verified this yet but it seems that jsonschema.Draft7Validator only has FORMAT_CHECKER attribute since jsonschema >= v4.3.0 so perhaps the requirements file in this module needs to be updated?

[binste]

Thanks for reporting the bug! Indeed, a quick fix for anyone affected is to upgrade jsonschema.

pip install jsonschema --upgrade

@mattijn @joelostblom This is an urgent one. I already fixed it in #2812 but that PR never made its way into the 4.2.1 release. Probably because the PR was actually about something else and I just fixed this backwards compatibility issue on the side. Sorry for that! Should have kept these PRs better separated and spot it while reviewing #2844. I can't get in front of a laptop right now but I can create a PR against v4.2.X branch this evening for a v4.2.2release.

[mattijn]

Thanks for the report @driadi. While you were running Great Expectations, me was running 'to what extend did I just break the Internet?'
No problem @binste! Thank you for willing to look into it this evening.

So currently:

• Altair 4.2.0 works with jsonschema >=3,<4.17
• Altair 4.2.1 works with jsonschema >=4.5.0
• [update] Altair 4.2.2 works with jsonschema >=3

[binste]

Clarification on the version compatibility:

• Altair 4.2.0 works with jsonschema >=3,<4.17
  • jsonschema 4.17 introduced format validation on schemas which causes an issue which is fixed in Altair 4.2.1
• Altair 4.2.1 works with jsonschema >=4.5
  • Altair 4.2.1 requires the FORMAT_CHECKER attribute on validator classes which was only introduced in jsonschema 4.5
• Altair 4.2.2 would work with jsonschema >= 3.0

[mattijn]

Done per https://pypi.org/project/altair/4.2.2/
Thanks again @binste!