[Jython-users] Supporting + on Java objects

[Anthony E. <ae...@si...>]

Currently, in Jython, using any arbitrary Java object aside from a java.lang.String, the following fails:

  print "text" + obj

With the message: TypeError: __add__ nor __radd__ defined for these operands

But the following works:

  print "test", obj


Would the Jython implementers consider modifying the PyJavaInstance class with something similar to:

    public PyObject __add__(PyObject object) {
    	return __str__ + object.__str__();
    }

So that the + notation as used in Java works properly?  I am not sure if the code I provided above is correct as I am
not intimately familiar with the Jython source.  I am also not sure if this has been discussed before: the mailing list
archives provided at the Jython.org site do not have search facilities (AFAICT) and I was unable to find anything about
it in my mail application (back to 7/21/2001), so I apologize ahead of time if it has.

Sincerely,
Anthony Eden