FIX: syntax for strings python>=3.12

[mmcky]

This PR fixes a syntax warning across the lecture series

@HumphreyYang if you have time would you mind review this PR to make sure an r shouldn't be an rf for example. It would be nice to have a double check of it.

[HumphreyYang]

Many thanks @mmcky. I will scan through the lectures.

[HumphreyYang]

Hi Matt,

I just pushed some other r cases I found in the lectures.

I think for this warning we need to look for any string that has a \ that is not escaped : (

[mmcky]

thanks @HumphreyYang good catch.

[mmcky]

thanks @HumphreyYang I hadn't searched for the embedded case. Nice catch.

[jstac]

Thanks @mmcky and @HumphreyYang for the fixes.

Once you get this working please roll out to the other lecture series.

[mmcky]

@HumphreyYang once a r string is setup we need to remove any \\ and replace with \ so there are quite a few cases to think about :-).

[github-actions]

🚀 Deployed on https://67846d6cc4a4220dd5287ed1--nostalgic-wright-5fa355.netlify.app

[mmcky]

@HumphreyYang on my local I am getting Syntax Warnings for docstrings. Is this happening to you?

For example from lake_model this line

Finds the steady state of the system :math:`x_{t+1} = \hat A x_{t}`

in a docstring is causing issues with \hat.

It doesn't see to be an issue on the gh build.

[HumphreyYang]

Thanks @mmcky,

I did not get this error message. This is interesting, perhaps we need to escape things in the docstring?

[mmcky]

Thanks @mmcky,

I did not get this error message. This is interesting, perhaps we need to escape things in the docstring?

thanks for letting me know @HumphreyYang. It's an odd error. It shouldn't be causing issues as docstrings should be able to contain latex markup. I'll have to do some further digging to see if I can replicate this in another environment.