[SEDONA-552] Enable Python lint rule E741

[jbampton]

E741 - Do not use variables named 'I', 'O', or 'l'

https://www.flake8rules.com/rules/E741.html

Did you read the Contributor Guide?

• Yes, I have read the Contributor Rules and Contributor Development Guide

Is this PR related to a JIRA ticket?

• Yes, the URL of the associated JIRA ticket is https://issues.apache.org/jira/browse/SEDONA-552. The PR name follows the format [SEDONA-XXX] my subject.

What changes were proposed in this PR?

Cleaned up the Python code

How was this patch tested?

pre-commit run --all-files

Did this PR include necessary documentation updates?

• No, this PR does not affect any public API so no need to change the documentation.