I'm having a problem with inheriting from a python class that I generated using boost::python.
I have a class whose function Print() is defined like this:
void CMagnet::Print()
{
cout << "Hello" << endl;
}
and the interface is defined like this in my .cpp file:
BOOST_PYTHON_MODULE (CMagnet)
{
class_<CMagnet>("CMagnet")
.def("Print", &CMagnet::Print)
;
}
In principle, the module works, but I run into problems with inheritance. Here's an example:
from CMagnet import CMagnet
class DerMagnet(CMagnet):
def __init__(self):
self.Print()
a = CMagnet()
a.Print()
b = DerMagnet()
What I get is:
hirbel> python der_test.py
Hello
Traceback (most recent call last):
File "der_test.py", line 10, in <module>
b = DerMagnet()
File "der_test.py", line 5, in __init__
self.Print()
Boost.Python.ArgumentError: Python argument types in
CMagnet.Print(DerMagnet)
did not match C++ signature:
Print(CMagnet {lvalue})
Meaning that when I instantiate the CMagnet class, I can call the Print() method without problems, but when I inherit from it and the derived class tries to call the method, the self argument is automatically inserted as the first argument and the signature is wrong. How would I resolve this?
Thanks a lot for your help.
