bug#57786: 28.1; run-python fails when using tramp-sshfs

[Spencer Baugh]

Michael Albinus <michael.albinus@gmx.de> writes:
> sbaugh@catern.com writes:
>> 1. Open a remote Python file with /sshfs:hostname:/path/to/file.py
>> 2. Hit C-c C-p (run-python) to start a Python REPL
>> 3. Observe a failure with the message:
>> tramp-send-string: Process *tramp/sshfs earth* not running
>
> I can reproduce it with Emacs 28.1, 28.2 and 29.0.50.
>
> However, it seems that this isn't supported by python.el. It uses
> internal Tramp functions from tramp-sh.el, so it is unlikely it will run
> over an sshfs connection.
>
> Perhaps an error message from python.el is needed, saying "Remote
> connection `sshfs' isn't supported for processes". or alike.

Seems like a bug in python.el then; the sshfs TRAMP method has better
performance than the ssh method, so it would be nice to be able to use
it when editing Python files...