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Python Python Basics (2015) Logic in Python Try and Except

Posted by Nicolas Cortinas
Nicolas Cortinas
691 Points

I dont see what I am missing here

Hello,

I have been trying to complete this task but I cant see what I am missing, maybe you can give me a hand!

Thank you very much!

Nico.

trial.py 
def add(num1, num2):
    try:
    return(float(num1) + float(num2))
    except ValueError:
        return = None
    else:
         return(float(num1) + float(num2))

2 Answers

Alexander Davison
Alexander Davison
65,469 Points
Alexander Davison
Alexander Davison
65,469 Points

Like what Ted Dunn said, you must indent the code that is part of the try block.

But, also, you should be assigning a brand-new variable called return to the value of True (that's what Python is thinking you want to do), but returning the value.

Lastly, I just want to point out that there's no need to the else clause. The try block will automatically do that if it doesn't cause an error (the try block actually runs the code, not just tests and see if it causes an error. However, if it does cause an error, it moves into the except part. Some people didn't know that, and that's an important understanding.)

If you fix those, you should end up with:

def add(num1, num2):
    try:
        return(float(num1) + float(num2))
    except ValueError:
        return None

I hope you understand :)

Good luck! ~alex

Nicolas Cortinas
Nicolas Cortinas
691 Points

Thank you Alex! It really helped me out! Now I know something new! thanks!!

Ted Dunn
Ted Dunn
43,783 Points
Ted Dunn
Ted Dunn
43,783 Points

Your first return statement (in the try block) needs to be indented.

Nicolas Cortinas
Nicolas Cortinas
691 Points

Thank you very much, Ted! I solved it