Advice on Python C modules

[Torsten Marek]

Hello all,

I think about rewriting one C++ library with Python wrappers (by sip) to
a pure Python module (because I just use it from Python).

I have to create custom types and inherit from those custom types.
Is it better to use pure C for that module, Pyrex or should I stay with
my current library (which has to be modified for some other reasons, too)?

thanks for your time

greets

Torsten

[Mike Rovner]

Torsten Marek wrote:

I think about rewriting one C++ library with Python wrappers (by sip)
to a pure Python module (because I just use it from Python).

I have to create custom types and inherit from those custom types.
Is it better to use pure C for that module, Pyrex or should I stay
with my current library (which has to be modified for some other
reasons, too)?

It seems to me that you contradict yourself here.
Pure python is pure python without any c, c++, pyrex, sip, etc.
OTOH, if you still need compiled extension for some reason
(usualy only two excuses are good enough- speed and low-level
interface to something as hardware or 3rd party libraries)
why throw out good working code? It's not a good practice.

So if you don't *have to* use compiled extension you can ask how to achieve
desired results in pure python.

Mike

[Torsten Marek]

Mike Rovner schrieb:

Torsten Marek wrote:

I think about rewriting one C++ library with Python wrappers (by sip)
to a pure Python module (because I just use it from Python).

I have to create custom types and inherit from those custom types.
Is it better to use pure C for that module, Pyrex or should I stay
with my current library (which has to be modified for some other
reasons, too)?

It seems to me that you contradict yourself here.
Pure python is pure python without any c, c++, pyrex, sip, etc.
OTOH, if you still need compiled extension for some reason
(usualy only two excuses are good enough- speed and low-level
interface to something as hardware or 3rd party libraries)
why throw out good working code? It's not a good practice.

So if you don't *have to* use compiled extension you can ask how to achieve
desired results in pure python.

You're right, sorry. What I meant was compiled extension, because I need
access to 3rd party libs and I do not want to use their Python bindings
for speed reasons.

Torsten