best way to compare contents of 2 lists?

[Esmail]

Hans DushanthaKumar wrote:
> 'set' comes to mind, 

Yes, I thought about that, but I wasn't sure how to potentially
deal with different number of duplicates in the lists. The post
by David seems to address that issue nicely.

> though I'm not sure if there are performance
> inplications with large amopunts of data.

Yes, I wonder about these sort of things too, not knowing too
much about how Python does things internally.

Thanks for the suggestion,
Esmail