Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

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

Alex Durham
Alex Durham
Courses Plus Student 456 Points


can someone help me figure out what i am doing wrong thanks!

def add(num1,num2): 
    except ValueError:
        return None:
        a = float (num1)
        b = float (num2)
        return (a + b)  
Steven Parker
Steven Parker
229,608 Points

Didn't you just ask this same question?

And remember to mark the question closed (by selecting a "best answer") once you are satisfied with an answer.

1 Answer

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

you have three blocks here: try, except, else. what you are TRYing to do is cast the number as floats, so that's what goes in the try block. next, if that fails, you want to deal with the exception, so you have except VE, return None. lastly, if casting to float works, you want to return the sum, so in the else part return the sum.