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

Posted by Andrej Pajenk
Andrej Pajenk
1,087 Points

Can't understand the error.

I don't get the error.

trial.py 
def add(add1,add2):
    try:
        add1 = int(input("Enter first num: "))
        add2 = int(input("Enter second num: "))           
        except ValueError:
            return(None)
        else:
            return(float(add1) + float(add2))

1 Answer

Ryan S
Ryan S
27,276 Points
Ryan S
Ryan S
27,276 Points

Hi Andrej,

The challenge does not ask you to input anything. The arguments add1 and add2 will be passed into the function for you to use as is. You are essentially overwriting them.

The challenge is asking you to do the following:

1) Try to convert add1 and add2 into floats.

2) If they can't be converted (i.e. they throw a ValueError), return None.

3) Otherwise, return the sum of add1 and add2

Also, be very careful of your indentation. The except block should not be inside your try block. Same goes for the else statement.

Good luck.