Bug report

Bug description:

The message must be prefixed by a whitespace since _Py_CheckRecursiveCall directly appends them to "maximum recursion depth exceeded":

Alternatively, we could make it so that a whitespace is automatically added and strip leading whitespaces if the "where" is the empty string (we wouldn't strip whitespaces in custom messages though I think).

For now, I'll just add the missing whitespaces where it should be.

CPython versions tested on:

CPython main branch

Operating systems tested on:

No response

Linked PRs

• gh-126035: add missing whitespace to *Py_EnterRecursiveCall messages #126036
• [3.13] gh-126035: add missing whitespace to *Py_EnterRecursiveCall() messages (GH-126036) #126058
• [3.12] gh-126035: add missing whitespace to *Py_EnterRecursiveCall() messages (GH-126036) #126059