第四十三题

题目：
python中作用域的使用
详见[Blog][https://www.runoob.com/python3/python3-namespace-scope.html]

#!/usr/bin/python
# -*- coding: UTF-8 -*-

class Num:
    __nNum__ = 1
    def inc(self):
        self.__nNum__ += 1
        print('nNum = %d' % self.nNum)

if __name__ == '__main__':
    nNum = 2
    inst = Num()
    for i in range(3):
        nNum += 1
        print('The num = %d' % nNum)
        inst.inc()