what do I have to do in task 3?

Question

def add(num1,num2):
    return float(num1)+float(num2)
```trial.py
def add(num1,num2):
try:
    return float(num1)+float(num2)
except ValueError:
    return None
else:
    return None
```

Nicolas Bassano · Answer

As Steven said: the last else is not nedded 
Plus, notice that you have an indentation problem on line 2 hence indentation problems for the rest of the code.
You were nearly there, keep at it.
BTW, the code should look like this.......
python
def add(num1,num2):
    try:
        return float(num1) + float(num2)
    except ValueError:
        return(None)

Steven Parker · Answer

Now you need a try block to allow the function to handle errors gracefully.
There's a good example of putting a try sequence together about 1 minute into the video The Exception to the Rule (https://teamtreehouse.com/library/python-basics/logic-in-python/the-exception-to-the-rule).  The main difference in the challenge is that you won't be using print, just another return with a *None value.
You can leave your current return as-is, and you won't need the else.

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vvsr sashank

vvsr sashank

what do I have to do in task 3?

Nicolas Bassano

Nicolas Bassano

vvsr sashank

vvsr sashank

2 Answers

Steven Parker

Steven Parker

Now you need a try block to allow the function to handle errors gracefully.

Nicolas Bassano

Nicolas Bassano