Let exception fire or return None

Thu Apr 30 04:18:06 EDT 2015

On 04/30/2015 03:43 AM, Cecil Westerhof wrote:
> I have a function to fetch a message from a file:
> def get_indexed_message(message_filename, index):
> """
> Get index message from a file, where 0 gets the first message
> """
>> return open(expanduser(message_filename), 'r').readlines()[index].rstrip()
>> What is more the Python way: let the exception fire like this code
> when index is to big, or catching it and returning None?
>> I suppose working zero based is OK.
>
Fire an exception.
One advantage is that the exception will pinpoint exactly which line of 
the function had a problem.
-- 
DaveA