Can python control complicated classes/objects written in C++

[Christophe Cavalaria]

Bo Peng wrote:

> Dear Python group:
> 
> I am planning on an application that involves several complicated C++
> classes. Basically, there will be one or two big data objects and some
> "action" objects that can act on the data. I would like to use a script
> language to control the interaction between these c++ objects.
> 
> I become interested in Python since it can load C++ objects and can even
> extend C++ classes. However, I am not quite sure to what extent can
> python do this. Ideally, I would like to have something like
> 
> (pseudo code, not in python)
>  > data = new TData( option1=..., option2=...)
>  > action1 = new TAction(option1=range(1,10)...)
>  > action2 = new TSubAction(option1=sin(5),..., option2=...)
>  > data.run( action1, action2)
>  > data.print
> 
> The benefits here is that I do not have to worry about user-input
> (python handles functions like range(), and numeric/string operations
> for me and send them to my objects), running logic (user create the
> scripts) and need only focus on the objects themselves. It would be
> better if users can easily extend TAction by themselves, through either
> Python or C++.
> 
> I am totally new to Python. I have read boost.python, python extension
> document but still do not know exactly what to do. My questions are:
> 
> 1. can Python fully read/write member data and run member functions of
> my objects?
> 
> 2. can python pass complicated objects (TAction) to another object
> (TData)?
> 
> 3. If python can not do this, I will have to create my own scripting
> language. Given the above pseudo code, any suggestion on how to
> implement it? I have googgled Qt Script for Application and many other
> weird implementations but I either do not like the grammar of the script
> language or the huge overheads.
> 
> Many thanks in advance.
> 
> Bo

You can try the Python module in Boost ( http://boost.org/ )
Here's a direct link : http://boost.org/libs/python/doc/index.html