2017-07-20 19:23 GMT+02:00 Victor Stinner <victor.stinner@gmail.com>:

2017-07-20 19:09 GMT+02:00 Cesare Di Mauro <cesare.di.mauro@gmail.com>:
> I assume that Python loads compiled (.pyc and/or .pyo) from the stdlib. That's something that also influences the startup time (compiling source vs loading pre-compiled modules).

My benchmark was "python3 -m perf command -- python3 -c pass": I don't
explicitly remove .pyc files, I expect that Python uses prebuilt .pyc
files from __pycache__.

Victor

OK, that should be the best case.

An idea to improve the situation might be to find an alternative structure for .pyc/pyo files, which allows to (partially) "parallelize" their loading (not execution, of course), or at least speed-up the process. Maybe a GSoC project for some student, if no core dev has time to investigate it.

Cesare