[Swig-user] How to make swig/python call the default constructor automatically?

[Bo P. <be...@gm...>]

Dear swig users,

I need to pass a simple object

class A
{
public:
    A(int a, int b=0) : a_(a), b_(b) { }
    int a_;
    int b_;
};

to a bunch of functions such as

void func(A a);

I use Python to wrap these classes and functions and I can call
func(A(1)), func(A(1, 2)) without problem. Because parameter b is not
used most of the time, I would like to be able to write func(A(1)) as
func(1). This is allowed in C/C++ but Python/Swig gives me a
TypeError. Is there a way to let swig call A(1) and pass it to C++
automatically? I understand that I define "void func(int a) {
func(A(a)); }" but I really do not want to do this to all such
functions.

Many thanks in advance.
Bo