"""curses.wrapper Contains one function, wrapper(), which runs another function which should be the rest of your curses-based application. If the application raises an exception, wrapper() will restore the terminal to a sane state so you can read the resulting traceback. """ import curses def wrapper(func, *args, **kwds): """Wrapper function that initializes curses and calls another function, restoring normal keyboard/screen behavior on error. The callable object 'func' is then passed the main window 'stdscr' as its first argument, followed by any other arguments passed to wrapper(). """ try: # Initialize curses stdscr = curses.initscr() # Turn off echoing of keys, and enter cbreak mode, # where no buffering is performed on keyboard input curses.noecho() curses.cbreak() # In keypad mode, escape sequences for special keys # (like the cursor keys) will be interpreted and # a special value like curses.KEY_LEFT will be returned stdscr.keypad(1) # Start color, too. Harmless if the terminal doesn't have # color; user can test with has_color() later on. The try/catch # works around a minor bit of over-conscientiousness in the curses # module -- the error return from C start_color() is ignorable. try: curses.start_color() except: pass return func(stdscr, *args, **kwds) finally: # Set everything back to normal if 'stdscr' in locals(): stdscr.keypad(0) curses.echo() curses.nocbreak() curses.endwin()