Python Basics > Logic in Python > Try and Except > Quiz Last Challange: Bummer! NameError: name 'add' is not defined

Task: You're doing great! Just one more task but it's a bigger one. Right now, we turn everything into a float. That's great so long as we're getting numbers or numbers as a string. We should handle cases where we get a non-number, though. Add a try block before where you turn your arguments into floats. Then add an except to catch the possible ValueError. Inside the except block, return None. If you're following the structure from the videos, add an else: for your final return of the added floats.

Code:

def add(x,y):

try:
    sum_numbers = float(x) + float(y)

except ValueError:
    return none

else:
    return sum_numbers

Error: -->Bummer! NameError: name 'add' is not defined

I don't see any mistake. I had to name the function 'add'. Maybe a bug? Thanks for help!