[Tutor] Finding items in list of lists.

[Doug.Shawhan@gecits.ge.com]

"Reduce", my new favorite action now that I have grown used to "zip". :-)

> Hi  Doug!
> You could mix it with something "less friendly" (???) and first
> flatten your list of lists l by using reduce:

> from operator import add
>  >>> reduce(add,l)
> ['joe', 'moe', 'schmoe', 'fee', 'foo', 'bar']

> With this a single comprehension would do it:

>  >>> [y for y in reduce(add,l) if y in ("moe", "foo")]
> ['moe', 'foo']
>  >>>

> Regards, Gregor