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

NameError: name 'add' is not defined. Help.

My code seems to be correct but I am getting the error message NameError: name 'add' is not defined.

def add(x,y):
    return (float(x)+float(y))
  except valueError:
    return None
    return x + y

1 Answer

Chris Freeman
Chris Freeman
Treehouse Moderator 68,423 Points

The error statement is misleading. The error is a typo in the exception name. The 'V' should be capitalized in ValueError.

Thank you Chris!