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

Luis Munguia Salas
Luis Munguia Salas
14,797 Points
Posted by Luis Munguia Salas
Luis Munguia Salas
14,797 Points

I've tried the except BEFORE the arguments are turned into floats, like the instructions say, in various forms

Any know how they answered the 3rd coding exams where, you have to enter the except before the arguments are turned into floats???

trial.py 
def add(arg1, arg2):
    new_arg1 = float(arg1)
    new_arg2 = float(arg2)
    total = new_arg1 + new_arg2
    return total

1 Answer

jacobproffer
jacobproffer
24,604 Points

Hey Luis,

I'm not seeing the try/except/else structure within your above code. Per the example below, you'll see that below my function declaration, I indent once and set-up my try block. This is where you'll want to convert the numbers passed into floats. You'll want to follow this block with a ValueError exception, just in case a non-numeric value is passed to the function. Finally, in the else block, you'll return the two values added together.

def add(x, y):
    try: 
        foo1 = float(x)
        foo2 = float(y)
    except ValueError:
        return None
    else:
        return foo1 + foo2