[C++-sig] Need strategic advice designing Boost/Python program

[Stefan Seefeld]

Craig Finch wrote:

> I keep getting error messages like this one when I define a constructor
> in Python:
> Boost.Python.ArgumentError: Python argument types in
>     python_constructor.value(python_constructor)
> did not match C++ signature:
>     value(python_constructor {lvalue})
> This error message is from a simple test case that I have created. 

Since you don't show any specific code I have to guess: Are you
calling the base class constructor in your derived class constructor ?
In contrast to C++, Python doesn't do this automatically for you, so
if you forget to initialize the base class you may see conflicts such
as the above when passing a derived where a base is expected.

> BTW, I'm injecting the method from __init__.py.  I'm probably doing
> something wrong--should I start a new discussion thread, since this is
> kind of a side topic?

If you have a specific question (with code samples etc.) that may
make sense. It's up to you.

I'm not sure what __init__.py is here. So I guess a complete test case
would indeed help.

Regards,
		Stefan

-- 

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