Running the python curses

pycurses.py

with curses_screen() as stdscr:
    """
    Execution of the curses begins here.
    """
    # Retrieve the size of the terminal currently open.
    SCREEN_HEIGHT, SCREEN_WIDTH = stdscr.getmaxyx()
    # Create the pad
    mypad = curses.newpad(SCREEN_HEIGHT, SCREEN_WIDTH)

    # Refresh the pad
    mypad.refresh(mypad_pos, 0, 0, 0, SCREEN_HEIGHT, SCREEN_WIDTH)
    while True:
        # Wait for the user input
        cmd = mypad.getch()
        
        if cmd == 66:
            # Pressed Keydown
            # Prints the statement on screen
            mypad.addstr(0, 0, "Down key is pressed")
            draw_page(mypad_pos)
        elif cmd == 65:
            # Pressed Keyup
            mypad.addstr(0, 0, "Down key is pressed")
        elif cmd == ord('q'):
            # Pressed 'q'
            # Quit the application 
            break
        elif cmd == ord('r'):
            # Pressed r for refresh
            mypad.addstr(0, 0, "Refresh key is pressed")