import curses

# curses: writing to window's bottom right position raises: `_curses.error:
# addstr() returned ERR'

# initiate ncurses
stdscr = curses.initscr()
# turn off automatic echoing of keys to the screen
curses.noecho()

try:
    # writing to window's last col where the row isn't the last
    stdscr.subwin(2, stdscr.getmaxyx()[1], 0, 0).addstr(0, stdscr.getmaxyx()[1] - 1, 'x')
    stdscr.refresh()
    # writing to the screen window's last row where the col isn't last
    stdscr.addstr(stdscr.getmaxyx()[0] - 1, stdscr.getmaxyx()[1] - 2, 'x')
    stdscr.refresh()

   ## Following fails:
   ## writing to window's bottom right positions
   #stdscr.subwin(1, stdscr.getmaxyx()[1], 0, 0).addstr(0, stdscr.getmaxyx()[1] - 1, 'x')
   #stdscr.refresh()
   ## writing to the screen window's bottom right positions
   #stdscr.addstr(stdscr.getmaxyx()[0] - 1, stdscr.getmaxyx()[1] - 1, 'x')
   #stdscr.refresh()
finally:
    curses.endwin()

while 1:
    pass