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

Yann Husseini
Yann Husseini
679 Points
Posted by Yann Husseini
Yann Husseini
679 Points

I am stuck in this challenge.

Can someone tell me where is my error?

trial.py 
try:
def add(arg1, arg2):
    return(float(arg1) + float(arg2))
except ValueError:
        return None 

add(9, 8)

3 Answers

Jon Mirow
Jon Mirow
9,864 Points
Jon Mirow
Jon Mirow
9,864 Points

Hi there!

try is outside the function definition. Remember that functions don't do anything until you call them by putting () on the end. So this says to python try defining a function... which doesn't make sense to python. Moreover you get a conflict - the block that follows try needs to be indented, and the code inside the function needs to be indented, but the except needs to line up with the try and be inside the function... so it's all too much for python and you get an error.

The fix: just move the try inside the function.

Hope it helps :)

simhub
simhub
26,543 Points
simhub
simhub
26,543 Points

hi Yann
this one worked for me: 

def add(arg1, arg2):
    try:
        return(float(arg1) + float(arg2))
    except ValueError:
        return None

just but the 'try' statement inside your function - like Jon said ;)

Yann Husseini
Yann Husseini
679 Points
Yann Husseini
Yann Husseini
679 Points

Hello everyone,

Thanks for your help!