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The stringbench suite of micro-benchmarks, currently available through SVN at http://svn.python.org/projects/sandbox/trunk/stringbench, would probably be a reasonable addition to the Tools directory.

Some ideas to improve stringbench:
 - test different Unicode range (stringbench tests only ASCII currently)
 - test mixing different Unicode range, e.g. ascii+latin1, UCS2.find(ascii), UCS2.replace(UCS2, UCS4), ...
 - add options to configure string lengths
Python 3.3 is now a little bit faster for pure ASCII strings. Python 3.2 is sometimes a little bit slower with non-BMP characters in narrow mode.
I expect different differents on Python 3.3 if we test different Unicode ranges.

The URL got mangled in at least my browser, so I'm repasting it on its own line:
http://svn.python.org/projects/sandbox/trunk/stringbench 

Please integrate stringbench into the HG repository. I will try to improve after its inclusion.

What, do you mean, "please"? This is exactly what this issue is about.

> What, do you mean, "please"? This is exactly what this issue is about.
I mean that it is a good idea to integrate the tool, I want it in
Python source tree! Go ahead.

New changeset 704630a9c5d5 by Antoine Pitrou in branch 'default':
Issue #13165: stringbench is now available in the Tools/stringbench folder.
http://hg.python.org/cpython/rev/704630a9c5d5 

I think that would be a useful tool for comparing two stringbench results. I propose an example of a script. Can use them separately or included in the stringbench.py, it's only an idea.

> I think that would be a useful tool for comparing two stringbench results.
Please open a new issue for such improvement.

> Please open a new issue for such improvement.
Well, I'll do it as soon as slightly improve the script.