What is the most efficient way to compare similar contents in two lists?

[geremy condra]

On Mon, Jun 13, 2011 at 10:50 AM, Chris Angelico <rosuav at gmail.com> wrote:
> On Tue, Jun 14, 2011 at 3:46 AM, geremy condra <debatem1 at gmail.com> wrote:
>> On Mon, Jun 13, 2011 at 9:30 AM, Chris Angelico <rosuav at gmail.com> wrote:
>>> Ha! That *lengthy* thread started fairly soon after I joined this
>>> list. It was highly... informative. I learned a bit about Python, and
>>> a lot about python-list, from the posts there.
>>
>> So what are we talking about here? Reduce?
>
> There was a huge thread about the removal of the cmp parameter to
> sort() in Python 3.x. It was quite a wide-ranging discussion, touched
> on many things. I think it got up to 90 posts in the first day, or
> something. The main thing it taught me was that python-list is a high
> traffic list; the next most important thing was who the courteous
> posters are.

I know that, but I mean what were you talking about before if you
weren't talking about cmp?

> In contrast, the thread on NaNs in Python has taught me more about the
> difference between floating point and 'real numbers' in a week or two
> than all my previous computing training put together. Yep, this is an
> interesting list.

I liked that thread. There should be more of those.

Geremy Condra