Requests for the breakning change in the Tkinter method wm_attributes()

[serhiy-storchaka]

Currently w.wm_attributes() without arguments returns a tuple or a str, which is inconvenient and different from other similar methods. I propose a change that makes it returning a dict. No deprecation period is possible. For details see:

https://discuss.python.org/t/tkinter-wm-attributes-needs-breaking-changes/37360
python/cpython#43457
python/cpython#111404

I think that this change should be made 16 years ago.

[gpshead]

We discussed this. We want PEP-387 to be followed. Effectively agreeing with what I said in the discuss thread: https://discuss.python.org/t/tkinter-wm-attributes-needs-breaking-changes/37360/9