jython-users

[Jython-users] C dependencies in CPython

[backspaces <ow...@ba...>]

I was surprised when I found out just how many of CPython's libraries/modules
are written in C/C++, thus potentially rendering Jython less useful due to
its not being able to run these libraries.  (I may be wrong here, but as far
as I know, Jython cannot run Python libraries that include C/C++
dependencies.)

Is there a strategy for Jython to be able to use Python libraries that use
C/C++?

Thanks,
   -- Owen


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Re: [Jython-users] C dependencies in CPython

[Charlie G. <cha...@gm...>]

On Dec 23, 2007 8:47 PM, backspaces <ow...@ba...> wrote:
> I was surprised when I found out just how many of CPython's libraries/modules
> are written in C/C++, thus potentially rendering Jython less useful due to
> its not being able to run these libraries.  (I may be wrong here, but as far
> as I know, Jython cannot run Python libraries that include C/C++
> dependencies.)
>
> Is there a strategy for Jython to be able to use Python libraries that use
> C/C++?

The C portion of the module is generally ported to Java and Jython
uses that version.  There are about 30 modules that have been ported
in org.python.modules.  For things that don't really need the speed of
C, sometimes a pure Python version is written.

Charlie

Re: [Jython-users] C dependencies in CPython

[Alan K. <jyt...@xh...>]

[Owen]
> I was surprised when I found out just how many of CPython's libraries/modules
> are written in C/C++, thus potentially rendering Jython less useful due to
> its not being able to run these libraries.  (I may be wrong here, but as far
> as I know, Jython cannot run Python libraries that include C/C++
> dependencies.)

Most jython folks tend to use the java equivalent libraries with
jython instead of C/C++; it is rare that java equivalents are not
available (often the java versions are superior).

Do you have any specific libraries in mind? Chances are someone here
can advise if you have a specific need in mind.

[Owen]
> Is there a strategy for Jython to be able to use Python libraries that use
> C/C++?

Well, there is jpype, which integrates the cpython runtime with the
java runtime. But I've never used it; perhaps someone else on the list
has?

http://jpype.sourceforge.net/

If you explain your requirements, you'll probably get some good advice.

Regards,

Alan.