what mistake am I doing in this code?

Question

I added try  before I made the arguments into floats
```trial.py
def add(in1, in2):
    try:
except ValueError:
    return None
else:
    in1 = float(in1)
    in2 = float(in2)
    return(in1 + in2)
```

Chris Howell · Accepted Answer

Hey @kevinkev (https://teamtreehouse.com/kevinkev) 
```python
def add(in1, in2):
    try:
        # this is where you want to TRY to 
        # perform some operation or statement that
        # can potentially RAISE an exception
    # ex. something that would 'raise ValueError()'
except ValueError: # must be indented at same level as try-block
    return None
else: # also indent at same level as try-except block.
    in1 = float(in1)
    in2 = float(in2)
    return(in1 + in2)
```
So the question you ask yourself is which part of your code could potentially raise ValueError() ? That is the part you want to stick in the try block.
And in Python indentation is very important. It is how python figures out which code belongs inside a specific block. So be sure you make sure things are aligned where they need to be. :)

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kevinkev

kevinkev

what mistake am I doing in this code?

1 Answer

Chris Howell

Chris Howell

kevinkev

kevinkev

Chris Howell

Chris Howell