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

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? rn')
weigt=raw_input('Ok, %s. How many pounds do you want? rn'%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