Eli Zaretskii <eliz@gnu.org> writes:

> Please repeat the profiling experiment, but after loading python.el
> (NOT python.elc).  This should produce a more detailed profile that
> would pinpoint the culprit more accurately.  Based on skimming the
> source code, my first suspect is syntax-ppss, but that could be a bad
> guess.

Hi Eli, thanks for the quick response.

I repeated the experiment after deleting python.elc to avoid loading it
on startup (maybe there's a simpler way of preventing that?). The new
profiler report is attached.

Another detail: This doesn't happen in the ordinary python-mode, only in
inferior-python-mode.