Fix invalid escape sequences on Python 3.12 in client code

[mh21]

Candidate sites were found via

find . -iname '*.py' -exec pylint --disable all --enable W1401 {} +

and

git grep  '\<re\..*(["'"'].*\\\\"  | grep '\.py:'

Fixes #211

[mh21]

@StykMartin please review carefully, I don't really trust myself here 🙈

[StykMartin]

@mh21 can you please remove changes to LC and Server?
These components are not yet ported to Python 3 (I have Python 3 LC in my fork atm), and I would like to handle them separately, as this will require some additional testing there anyway.

• I want to avoid backporting LC/Server stuff.

[mh21]

@StykMartin updated the PR 🤗

[StykMartin]

Thank you @mh21. I'll check it out right after my workday is over.

[StykMartin]

/packit build

[StykMartin]

Looks good, thanks @mh21!
I thought about it and I will push this as a separate 29.1.
The reason is that I want to release this on PyPI as well (where I can't just backport).

I can guarantee that this release will be done this weekend. I will post Bodhi updates here so you can +1/-1 karma.

[StykMartin]

As I promised @mh21.

• EPEL 9 - https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2024-4c95a02519
• F38 - https://bodhi.fedoraproject.org/updates/FEDORA-2024-922e86b8b7
• F39 - https://bodhi.fedoraproject.org/updates/FEDORA-2024-e739feb71e

[mh21]

@StykMartin sorry it took me so long to come back to this, thank you very much! 🤗

The user that reported this has verified that this fixed his issue 🎉.