Is there any way to say ignore case with "in"?

[Fredrik Lundh]

tinnews at isbd.co.uk wrote:

> Is there any way in python to say
> 
>     if string1 in string2:
>         <do something>
> 
> ignoring the case of string1 and string2? 

     if string1.lower() in string2.lower():
         ...

(there's no case-insensitive version of the "in" operator in stock Python)

</F>