Build failure with Python 3.13

[bendk]

The Python code uses _Py_IsFinalizing, but that's been renamed to Py_IsFinalizing in Python 3.13. Here's an Apache Arrow issue and PR that explains the problem and how to fix it.

[Ko496-glitch]

@bendk can i take this issue ?

[bendk]

Sure, please do.

[Ko496-glitch]

@bendk Correct if i am wrong but from what i understand when the PR was created and looking up the background info i am given to understand that i should take these steps to track the issue.

1. Check the version gated #define for Py_IsFinalizing.
2. Check if the pythoncapi-compat is breaking anything for transition _Py_isFinalizing -> Py_IsFinalizing
   If you can provide more info on this it would be really helpful
   Thanks

[bendk]

I think you can do the same steps as the PR:

• Change _Py_isFinalizing to Py_IsFinalizing
• Add a #define with a version check that defines Py_IsFinalizing for older python versions.

[Ko496-glitch]

Oka i will start from header files.

[Ko496-glitch]

opening a PR

[Ko496-glitch]

@bendk PR submitted please let me know if there are any other changes too i have to make.
Thanks!

[bendk]

Great! It looks good to me, but I'm just a user of the library. I don't have the power to approve the PR. Hopefully someone from facebook will.