How can I extend a class in Python curses module

Question

In Python curses, a new window object can be created with the curses.newwin() function. How can I extend the class of the objects that are instantiated from the newwin function?

I have tried dir(curses) but couldn't find any obvious class names there for me to extend.

Answer 1

curses.newwin returns a extension type.

Unfortunately, you can't set attributes of extension types.

As a workaround, you can redefine curses.newwin to return a new class instance that wraps the return value of the original curses.newwin(..):

orig_newwin = curses.newwin
def newwin(*args):
    win = orig_newwin(*args)
    return Wrapper(win)
curses.newwin = newwin