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

Jesse Hayes
Jesse Hayes
4,007 Points
Posted by Jesse Hayes
Jesse Hayes
4,007 Points

Could not convert string to float a

My code works in workspace, but i get Could not convert string to float 'a' in the challange. What am I missing?

Thanks!

trial.py 
def add(a, b):
    try:
        add = int()
    except ValueError:
        return None
    else:
        float(a)
        float(b)

    return float(a) + float(b)

1 Answer

james south
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.a{fill-rule:evenodd;}techdegree seal-36
james south
Front End Web Development Techdegree Graduate 33,271 Points
james south
.a{fill-rule:evenodd;}techdegree seal-36
james south
Front End Web Development Techdegree Graduate 33,271 Points

what you are attempting to do in the try block is cast to float. if it doesn't work, the except block runs. if it does work, the else block runs. so cast to float in the try, return none in the except, and return the sum in the else.