Groups > comp.lang.python > #25718 > unrolled thread

PyPy, is it a 1:1 replacement for CPython?

Started by	Simon Cropper <simoncropper@fossworkflowguides.com>
First post	2012-07-21 13:35 +1000
Last post	2012-07-21 03:59 +0000
Articles	2 — 2 participants

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  PyPy, is it a 1:1 replacement for CPython? Simon Cropper <simoncropper@fossworkflowguides.com> - 2012-07-21 13:35 +1000
    Re: PyPy, is it a 1:1 replacement for CPython? Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2012-07-21 03:59 +0000

#25718 — PyPy, is it a 1:1 replacement for CPython?

From	Simon Cropper <simoncropper@fossworkflowguides.com>
Date	2012-07-21 13:35 +1000
Subject	PyPy, is it a 1:1 replacement for CPython?
Message-ID	<mailman.2359.1342841726.4697.python-list@python.org>

Hi,

Can you use PyPy as a direct replacement for the normal python or is it 
a specialized compiler that can only work with libraries that are 
manipulated to operate within its constraints (if it has any).

Are there any issues with using PyPy? For example, if programs are 
created under PyPy are they subtle different from normal code that would 
make the program incompatible with the normal compiler?

-- 
Cheers Simon

    Simon Cropper - Open Content Creator

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#25724

From	Steven D'Aprano <steve+comp.lang.python@pearwood.info>
Date	2012-07-21 03:59 +0000
Message-ID	<500a2933$0$29978$c3e8da3$5496439d@news.astraweb.com>
In reply to	#25718

On Sat, 21 Jul 2012 13:35:21 +1000, Simon Cropper wrote:

> Hi,
> 
> Can you use PyPy as a direct replacement for the normal python or is it
> a specialized compiler that can only work with libraries that are
> manipulated to operate within its constraints (if it has any).

PyPy should work perfectly with pure-Python software. I don't know if it 
is compatible with extension libraries written in C or Fortran.

> Are there any issues with using PyPy? For example, if programs are
> created under PyPy are they subtle different from normal code that would
> make the program incompatible with the normal compiler?

I don't expect so. There may be special PyPy functions that other 
Python's won't have, but I don't know of any. If you stick to standard 
library and language features as described in the normal Python docs, you 
should be fine.

-- 
Steven

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PyPy, is it a 1:1 replacement for CPython?

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#25718 — PyPy, is it a 1:1 replacement for CPython?

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