[pypy-dev] pypy 2.2.1 win32

Johan Råde johan.rade at gmail.com
Fri Mar 7 19:25:20 CET 2014

Hi Norbert,

It is not easy to answer questions like that. We have not tested every 
Python program with every Python version. Why don't you just try 
yourself? If you run into problems when you try with PyPy, feel free to 
ask for advice here.

But OK, I happen to have Sunfish and four different 32-bit Python 
versions installed on my computer. Here are the results I got when I 
timed the Sunfish function test.selfplay():

PyPy 2.2.1:          106.2 s
PyPy 3.2.1 beta:     395.2 s
CPython 2.7.6:       363.9 s
CPython 3.4.0 RC2:   426.5 s

So it seems that you can use any of these four, but PyPy 2.2.1 is 
fastest. (I think the author of Sunfish has optimized the code using 
PyPy 2.)

And let's get the terminology straight: Python is a language.
PyPy, CPython, IronPython and Jython are different implementations of 
that language.
The software that you call Python 3.3.4 should be called CPython 3.3.4.


On 2014-03-07 07:45, norbert.raimund.leisner at arcor.de wrote:
>   Hello Maciej, hello support-team!
> my hardware is : Intel Core 2 Duo E6600 (2x2,4 Ghz) - 1 GB RAM - 512 MB graphical card
> operation system: Windows XP SP3 32-bit
> Would yoru recommendation be PyPy 3 2.1 beta 1 win32 or is Python 3.3.4 x86 MSI at this case your first choice?
> http://www.python.org/download/releases/3.3.4/
> I use it for Sunfish https://github.com/thomasahle/sunfish/ and Shatranj http://code.google.com/p/shatranjpy/ (two chess engines) cf. WinBoard/CECP-protocol http://www.open-aurec.com/wbforum/WinBoard/engine-intf.html
> and WinBoard-GUI  http://www.open-aurec.com/wbforum/viewtopic.php?f=19&t=51528
> Best wishes,
> Norbert
> ----- Original Nachricht ----
> Von:     Maciej Fijalkowski <fijall at gmail.com>
> An:      norbert.raimund.leisner at arcor.de
> Datum:   28.02.2014 08:39
> Betreff: Re: [pypy-dev] pypy 2.2.1 win32
>> On Fri, Feb 28, 2014 at 9:03 AM,  <norbert.raimund.leisner at arcor.de> wrote:
>>> Hello support-team,
>>> I have installed pypy 2.2.1 win32 for my OS Windows XP SP 3 -32 bit,
>> Python 2.7, MSI Microsoft Visual C++ 2008 SP1 Redistributable Package
>> (x86).
>>> Now my question:
>>> Must be Python 2.7 deinstalled and replaced by Pythonv2.7.6 or not?
>> As far as I understand your question, the answer is no. Various
>> versions of Python (and PyPy) can happily coexist next to each other.
>> Cheers,
>> fijal

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