[cjllanwarne]

Reverts #15603

We need 3.11 to support our current dataproc (and spark) version.

I will follow up with a PR to do 90% of this again, but keeping 3.11 for now.

[graphite-app]

Inconsistency between minimum Python version checks. This file now requires Python 3.9+ (minor_version < 9), but hail/python/hail/__init__.py requires Python 3.10+, and setup.py/setup-hailtop.py specify python_requires=">=3.10".

# docker.py says 3.9+ is ok:
if major_version != 3 or minor_version < 9:
    raise ValueError(f'Python versions older than 3.9...')

# But __init__.py requires 3.10+:
if version_info < (3, 10):
    raise EnvironmentError(f'Hail requires Python 3.10...')

This should be minor_version < 10 to match the rest of the codebase's 3.10+ requirement.

Suggested change

	if major_version != 3 or minor_version < 9:
	raise ValueError(
	f'Python versions older than 3.12 (you are using {major_version}.{minor_version}) are not supported'
	f'Python versions older than 3.9 (you are using {major_version}.{minor_version}) are not supported'
	)
	if major_version != 3 or minor_version < 10:
	raise ValueError(
	f'Python versions older than 3.10 (you are using {major_version}.{minor_version}) are not supported'
	)

Spotted by Graphite



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[cjllanwarne]

this is true but:

1. I want a clean roll back to the status quo ante
2. This will be fixed when we roll forwards again