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

Dillon Reyna
Dillon Reyna
9,531 Points
Posted by Dillon Reyna
Dillon Reyna
9,531 Points

I Don't Understand the Question

Add a try block before where you turn your arguments into floats

I don't get where to insert the 'try:' statement, so I keep getting this wrong.

trial.py 
def add(a, b):
    return (float(a) + float(b))

try:
    add(1, 2)
except ValueError:
    return None
else:
    add(1, 2)

1 Answer

Aaron Nolan
Aaron Nolan
5,714 Points
Aaron Nolan
Aaron Nolan
5,714 Points

You're very close with your answer but Treehouse wants you to add the try/catch block into the method, so your code should read like this :

def add(num1, num2):
    try: # Try turn these values into floats
        return float(num1) + float(num2)
    except ValueError: # If it can't, don't return anything
        return None
    else: # If it can then continue returning them
        return float(num1) + float(num2)

Hope this helps! Happy Coding :)