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

Maggie Wolff
Maggie Wolff
495 Points
Posted by Maggie Wolff
Maggie Wolff
495 Points

python basics try and except challenge task 3 of 3

I tried to do this question, and came out confused. Please help.

trial.py 
def add(num1, num2):
    num1 = float(num1)
    num2 = float(num2)
    return num1+num2

1 Answer

Peter Smart
Peter Smart
9,150 Points 
def add(num1, num2):
    #"try" to convert the numbers into floats...
    try:
        num1 = float(num1)
        num2 = float(num2)
    except ValueError:
        #if we can't, we return None
        return None
    else:
        #otherwise....
        return num1+num2