pylint fixes

[marksmayo]

some tidyups for pylint

Pull Request Checklist

Thank you for taking the time to improve Arrow! Before submitting your pull request, please check all appropriate boxes:

• [N/A ] 🧪 Added tests for changed code.
• [cannot get them to run in win ] 🛠️ All tests pass when run locally (run tox or make test to find out!).
• [X ] 🧹 All linting checks pass when run locally (run tox -e lint or make lint to find out!).
• [X ] 📚 Updated documentation for changed code.
• [X ] ⏩ Code is up-to-date with the master branch.

If you have any questions about your code changes or any of the points above, please submit your questions along with the pull request and we will try our best to help!

Description of Changes

Some tidyups with pylint, and black also fixed some stuff on pre-commits.

[codecov[bot]]

Codecov Report

Base: 100.00% // Head: 100.00% // No change to project coverage :thumbsup:

Coverage data is based on head (15fac47) compared to base (74a759b). Patch coverage: 100.00% of modified lines in pull request are covered.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #1141 +/- ## ========================================= Coverage 100.00% 100.00% ========================================= Files 9 9 Lines 2319 2319 Branches 492 492 ========================================= Hits 2319 2319 ``` | [Impacted Files](https://codecov.io/gh/arrow-py/arrow/pull/1141?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=arrow-py) | Coverage Δ | | |---|---|---| | [arrow/arrow.py](https://codecov.io/gh/arrow-py/arrow/pull/1141/diff?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=arrow-py#diff-YXJyb3cvYXJyb3cucHk=) | `100.00% <100.00%> (ø)` | | | [arrow/factory.py](https://codecov.io/gh/arrow-py/arrow/pull/1141/diff?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=arrow-py#diff-YXJyb3cvZmFjdG9yeS5weQ==) | `100.00% <100.00%> (ø)` | | | [arrow/locales.py](https://codecov.io/gh/arrow-py/arrow/pull/1141/diff?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=arrow-py#diff-YXJyb3cvbG9jYWxlcy5weQ==) | `100.00% <100.00%> (ø)` | | | [arrow/util.py](https://codecov.io/gh/arrow-py/arrow/pull/1141/diff?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=arrow-py#diff-YXJyb3cvdXRpbC5weQ==) | `100.00% <100.00%> (ø)` | | Help us with your feedback. Take ten seconds to tell us [how you rate us](https://about.codecov.io/nps?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=arrow-py). Have a feature suggestion? [Share it here.](https://app.codecov.io/gh/feedback/?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=arrow-py)

:umbrella: View full report at Codecov.
:loudspeaker: Do you have feedback about the report comment? Let us know in this issue.

[jadchaar]

Hi @marksmayo thanks for the contribution. I am catching up with PRs and this PR seems to be conflicting with the current master branch. Mind getting it up to date with the latest master? Linting should be passing after a few fixes I made a few weeks ago, so please do re-open once conflicts are fixed.