Neatest way to do a case insensitive "in"?

[Albert Hopkins]

On Fri, 2009-03-20 at 07:25 +1100, Jervis Whitley wrote:
> >
> >    if stringA.lower() in stringB.lower():
> >        bla bla bla
> >
> 
>     from string import lower
> 
>     if lower(stringA) in lower(stringB):
>          # was this what you were after?
> 

This is analogous to standing behind a perfectly functioning automobile
and pushing it everywhere you want to go.