[Tutor] How to find a word in a string

[Mats Wichmann]

On 5/3/21 7:09 PM, Phil wrote:
> This is a bit trickier that I had at first thought, for example:
> 
> test = 'Do this, then do that.'
> 
> if 'this' in test.lower().split():
>      print('found')
> else:
>      print('not found')
> 
> Does not find 'this' because of the comma.
> 
> I had experimented with .find() but that's not the answer either because 
> if I was searching a sentence for 'is' it would be found in 'this' 
> rather than only 'is' as a word. I also thought about striping all 
> punctuation but that seems to be unnecessarily complicated.
> 
> So, how I might I deal with the comma in this case?
> 


Depends on your requirements, which seem to be more complex...

without getting too fussy:


if 'this' in test:

beyond that, you're getting into the range of regular expressions, which 
we usually tell people "don't reach for them until you need to", but it 
does seem like your whole-word requirement means you may need to...