python小练习之换零钱

美分硬币有1美分、5美分、10美分、25美分。

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#!/usr/bin/env python
r = int(raw_input('please enter your money: '))
a = [25, 10, 5, 1]    #美分硬币单位
i = 0                
b = []                #硬币单位数
while i <= 3:      
        p = r / a[i]
        r = r % a[i]
        b.append(p)
        if r == 0:
                break
        i += 1
print 'your money can get %d coin' % sum(b)

 

目前没发现bug，如有bug或者代码优化方式，请留言，十分感激！！！