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Fri Oct 7 17:36:05 CEST 2011 · https://mail.python.org/pipermail/python-dev/2011-October/113951.html

Le 06/10/2011 12:42, Victor Stinner a écrit :
> "A".join(["Bob"]*100)): 0.92 =>  2.11

I just optimized PyUnicode_Join() for such dummy benchmark. It's now 
1.2x slower instead of 2.3x slower on this dummy benchmark.

With longer *ASCII* strings, Python 3.3 is now 2x (narrow 3.2) or 4x 
(wide 3.2) faster than Python 3.2. For example with this micro-benchmark:

./python -m timeit 'x=["x"*500]*5000; y="\n"; z=y.join' 'z(x)'

Victor

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