Hello from a super noob!

[Andre Müller]

Hello,

you can refactor your code a little bit and learn more about exceptions:

def get_numbers():
    first = None
    second = None
    while True:
        try:
            if first is None:
                first = int(input('Enter your first number: '))
            if second is None:
                second = int(input('Enter your second number: '))
        except ValueError:
            print('You have to enter a number')
            continue
        else:
            return first, second


Am 08.06.2017 um 01:56 schrieb CB:
> Hi everyone,
> I am taking a python class and I'm stuck in an exercise.
>
> what am i doing wrong? Can anyone try to run it? Thanks so much! 
>
> #Description:Input validation and while loops.
>
>
> import random
> def main(): #main function need in all programs for automated testing
>     
>
>     #your program goes here
>     
>     print()
>
>
>
>     
>     print("This program will help us practice input validation and while loops.")
>     print("The user will be asked to enter two numbers which will both be validated. ")
>     print("The sum of the numbers will then be displayed in a complex print statement ")
>     print("and the user will be asked if they would like to run the program again."
> )
>     print()
>     print()
>     
>     while True:    
>         FirstNumber = input ("Please enter the first number: ")
>         if FirstNumber.isdigit ():
>             FirstNumber = int(FirstNumber)
>                 break 
>         else:
>           print ("Invalid response. Please enter a whole number. " )
>                 
>         while True:
>                         
>             SecondNumber = input ("Please enter the second number: " )
>             if SecondNumber.isdigit():
>                 SecondNumber= int(SecondNumber)
>
>                     break
>             else:
>                 print("Invalid response. Please enter a whole number." )
>                             
>         print()
>         print (str(FirstNumber) + " + " + str(SecondNumber)+ " = " + str(FirstNumber + SecondNumber))
>         print()
>                     
>         while True:
>                         
>             ans= input('Would you like to run the program again (Y/N) : ')
>             if ans== 'Y' or ans== 'N':
>                     break
>
>             else:
>                 print(" lnvalid response. Please answer with 'Y' or 'N' ")
>
>         if ans== 'N':
>                     break            
>               
>


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