无法将数字转换为浮点数 [英] Can't convert a number to a float

问题描述

作为Python的新手，我正在尝试解决一项家庭作业问题，但我不明白自己做错了什么.我下面有代码和错误消息，希望有人可以告诉我我哪里出错了.

I'm trying to solve a homework problem as an extreme novice to python, and I don't understand what I'm doing wrong. I have the code and error message below, hoping that someone can tell me where I went wrong.

英里输入尝试10、50，然后是100.有效. Mpg是20.0.也可以. GP输入为3.1599，这给了我这个错误.不知道为什么.

The miles input tries 10, 50, then 100. Which works. Mpg is 20.0. Also works. gp input is 3.1599, which gives me this error. Not sure why.

miles = float(input())  
mpg = float(input())
gp = float(input())
price = (miles*1.0/mpg)*gp
print(price)

回溯(最近通话最近): 在第3行的文件"main.py"中 gp = float(input()) EOFError:读取行时出现EOF

Traceback (most recent call last): File "main.py", line 3, in gp = float(input()) EOFError: EOF when reading a line

推荐答案

`mpg = float(input('Enter miles per gallon:'))
 gp = float(input('Enter the gas price:'))
 price = (10*1.0/mpg)*gp print(price) 
 price = (50*1.0/mpg)*gp print(price) 
 price = (400*1.0/mpg)*gp print(price)`      

这就是答案，已解决

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