Python3 curses module

Question

Why does the curses module in python3 raises an exception after it successfully adds a char at the lower right part of a window?

This is all the docs at https://docs.python.org/3/library/curses.html says
"Attempting to write to the lower right corner of a window, subwindow, or pad will cause an exception to be raised after the character is printed."
It doesn't mention why exactly it does that? What is the reason?

Answer 1

Maybe it is the behavior of the underlying `curses` library?