2019-03-26
阅读量:
589
如何将两个变量值互换?
'''
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)
'''






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