[Python-Dev] Benchmarking Python 3.3 against Python 2.7 (wide build) (original) (raw)

Antoine Pitrou solipsis at pitrou.net
Mon Oct 1 13:54:40 CEST 2012

On Sun, 30 Sep 2012 21:49:20 -0400 Brett Cannon <brett at python.org> wrote:

> Note that Mako can use the Markupsafe library for faster operation. > This will skew the result if one of your Pythons has Markupsafe > installed and the other does not. >

Should probably have the benchmark print out a warning when markupsafe is used. Turns out I have it installed in my user directory for Python 2.7 so that probably came into play.

> > Perhaps the benchmark runner should launch its subtests in a controlled > environment to avoid such issues? > If we had venv in Python 2.7 that might be easy to do, but otherwise is there an easy way without having to try to pull in virtualenv or something crazy like a chroot or something?

The mako benchmark could manually exclude markupsafe from sys.modules. That only addresses that specific benchmark, though.

Regards

Antoine.

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