2.3-2.5 what improved?

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    Robin> I sort of remember claims being made about 2.5 being 10% faster
    Robin> than 2.4/2.3 etc etc. Can anyone say where the speedups were?

What's New might be enlightening:

    http://www.google.com/search?q=what%27s+new+site%3Apython.org

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