PythonFileReporter: do not expect files without a filename extension to contain Python code

[jayaddison]

Possible fixup; could resolve #1488 (if that's confirmed to be a bug worth addressing).

[jayaddison]

Awaits sphinx-doc/sphinx#11165 (or similar)

[ProsperousHeart]

@nedbat is this still valid?

[jayaddison]

It's completely possible that it'll be made redundant by other changes, @ProsperousHeart - it's a fairly innocuous warning message that most people probably won't notice (and likely rarely indicates a genuine problem).

That said: I (for no good reason) have the time and energy to follow it, even if it takes months or years, so for me it remains relevant. It's less like the Sagrada Familia and more like a small signpost that's misaligned on a minor countryside road; we're aware of it and it can be fixed at some point.

(that analogy doesn't quite make sense, because in this case we're dependent on other signposts changing elsewhere.. it's an effort to explain it, though 🤷)

[jayaddison]

(a small note to mention that I continue to be interested in progressing this at some point. roughly speaking, the things on my tasklist ahead of this are: a bunch of Sphinx linkcheck-related changes (pending review, acceptance and stability assurance), before then refreshing and offering an updated Sphinx .jinja template suffix changeset, and then finally after that also being merged, accepted, proven stable -- optimistic perhaps -- then a revisit here)

[jayaddison]

The Sphinx linkcheck-related changes I had in mind have been merged and release in Sphinx v7.1.0 - I'm going to wait for another week or two to allow time for any feedback and bugreports to arrive, and then I'll get started again on updating the Jinja template suffix logic... and then after that is complete, then this will be ready for reconsideration.