Python练习I have three kinds of fruit:apple:$1.29/lbgrape:$2.2

来源：学生作业帮编辑：作业帮分类：英语作业时间：2024/05/17 06:07:39

Python练习
I have three kinds of fruit:
apple:$1.29/lb
grape:$2.29/lb
orange:$1.5/lb
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Which one do you want?
grape
Ok,grape.How many pounds do you want?
1.5
The cost is $3.44

print '''
I have three kinds of fruit:
apple: $1.29/lb
grape: $2.29/lb
orange: $1.5/lb
'''
name=raw_input('Which one do you want? \r\n')
weigt=raw_input('Ok, %s. How many pounds do you want? \r\n'%name)
if name=='apple':
    price=1.29*float(weigt)
elif name=='grape':
    price=2.29*float(weigt)
elif name=='orange':
    price=1.5*float(weigt)

print 'The cost is $%.2f'%price
再问：您好，请问cost输出时是怎样保留两位小数的？
再答： %.2f
再问：能加一下您QQ吗，我刚学有些地方不太懂

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