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Thu Sep 7 01:30:41 EDT 2017 · http://mail.python.org/pipermail/python-dev/2017-September/149268.html

INADA Naoki <songofacandy at gmail.com> wrote:
> Current `python -v` is not useful to optimize import.
> So I use this patch to profile import time.
> https://gist.github.com/methane/e688bb31a23bcc437defcea4b815b1eb

I have implemented DTrace probes that do almost the same thing.
Your patch is better in that it does not require an OS with DTrace
or SystemTap.  The DTrace probes are better in that they can be a
part of the standard Python build.

https://github.com/nascheme/cpython/tree/dtrace-module-import

DTrace script:

https://gist.github.com/nascheme/c1cece36a3369926ee93cecc3d024179

Pretty printer for script output (very minimal):

https://gist.github.com/nascheme/0bff5c49bb6b518f5ce23a9aea27f14b

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[Python-Dev] To reduce Python "application" startup time