[Tutor] user-given variable names for objects

[Kent Johnson]

Tiger12506 wrote:
>> Mmm, to nit-pick a little, dictionaries are iterables, not iterators. They 
>> don't have a next() method.
> 
> I'm a little fuzzy on the details of that, I will have to look over some 
> reference material again.

An iterable is something that produces an iterator when you call iter() 
on it. An iterator has a next() method. More here:
http://personalpages.tds.net/~kent37/kk/00004.html

> Oh! This is new to me! When did they put in itervalues? See what happens 
> when you leave the python community so you can learn C and assembly~

Python 2.2, when explicit iterators were introduced.

>> and of course if you care about efficiency you should hoist the call to 
>> time.time() out of the loop!
> 
> Oh, I thought it was necessary for the time to change within the loop which 
> might or might not be necessary

Yes, the functionality is slightly different if the time() call is 
hoisted out of the loop.

Kent