looking for advice python

[twiztidtrees at gmail.com]

On Sunday, January 27, 2013 1:57:47 PM UTC-5, twizti... at gmail.com wrote:
> I am in a class and was just looking for different advice.  This is the first time iv ever tried to do this. That's all that iv taken from two chapters and wondering how bad I did.  I also like to learn.  Thanks for everyones input

This is what I have now thanks for the advice. It did seem a lot easier this way, but any criticism would be nice thanks.

windows 7 and python 3.3.0

while True:
    try:
        miles = float(input("How many miles did you drive?"))
        break
    except ValueError:
        print("That is not a valid number. Please try again.")
while True:
    try:
        gas = float(input("How many gallons of gas did you use?"))
        break
    except ValueError:
        print("That is not a valid number. Please try again.")

mpg = miles/gas
print('Your miles per gallons is', format(mpg,'.2f'))