How to define a callback from Python to a C program ...

[Markus Schaber]

Hi,

Marten Feldtmann <marten at toppoint.de> schrub:

> I want to extend my application (not written in C) with Python and
> I want to call from Python to my program and give my program some
> information (say a string) ... it's something like a callback.
> 
> Can this be done ???

If the language your application is written lets you execute external 
programs, than you can use pipes. Start the python program from your 
application, and then communicate with it through the pipes.

Java e. G. has java.lang.runtime and java.lang.process. This allows you 
to start an external process, and access the process's stdin, stdout 
and stderr like files.

The second way - at least with unixoid OSes - would be to use named 
pipes.

If both fails, you could open a tcp or udp socket, and communicate this 
way.

markus
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