Which part did I mess up?

Question

Looked at another discussion on this challenge and there seemed no clear answer to this 3rd part of the problem. Looks like I combined the right parts of some of the answers there but still the try again message pops up. Can anybody help? Thank you!
```trial.py
def add(x, y):
try: 
    a = float(x)
    b = float(y)
except ValueError:
    return None
  else:
    return a + b
```

Cheo R · Accepted Answer

Hello Paul, you're on the right track, just need to make sure you're indentations are correct:
```python
def add(x, y):
    try: 
        a = float(x)
        b = float(y)
    except ValueError:
        return None
    else:
        return a + b
```

Jennifer Nordell · Answer

Hi there @Paul Je (https://teamtreehouse.com/paulje) !  We want to try to return the addition of the conversion of x and y, but if it fails then we return None.  @Cheo R (https://teamtreehouse.com/cheoroman) posted a nice answer, but this one is a little shorter.  Take a look:
```python
def add(x, y):
    try:
        return float(x) + float(y)
    except ValueError:
        return None
```
Here we have a method named "add".  It receives two pieces of input.  We try and convert each one of them to a float separately.  If either one fails to convert to a float, a ValueErrorwill be encountered at which point None is returned.  Hope this helps! :sparkles:

Paul Je · Answer

Great answers guys, helped me understand it a lot better. Thank you!!

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Which part did I mess up?

3 Answers

Cheo R

Cheo R

Jennifer Nordell

Jennifer Nordell

Paul Je

Paul Je