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题目：两个变量值互换。 程序分析：无 程序源代码： - #!/usr/bin/python
- # -*- coding: UTF-8 -*-
-
- def exchange(a,b):
- a,b = b,a
- return (a,b)
-
- if __name__ == '__main__':
- x = 10
- y = 20
- print ('x = %d,y = %d' % (x,y))
- x,y = exchange(x,y)
- print ('x = %d,y = %d' % (x,y))
以上实例输出结果为： - x = 10,y = 20
- x = 20,y = 10
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