a question in python curses modules

[Marco]

  Hi, I wanna write a simple curses program, but somethings confuse
me, my code here:

#!/usr/bin/python

import os
import sys
import time
import curses

class CursesObject( object ):

    def __init__(self):

        self.STDSCR = curses.initscr()
        curses.noecho()
        curses.cbreak()
        self.STDSCR.keypad(1)

    def __del__(self):
        self.STDSCR.keypad(0)
        curses.nocbreak()
        curses.echo()
        curses.endwin()

c1 = CursesObject()
time.sleep(1)


I donot know what happen, but in __del__ function, curses become None??!!

Thank you VERY much!
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LinuX Power