What's the difference?

[Ethan Furman]

Ethan Furman wrote:
> Anthony Papillion wrote:
>> Someone helped me with some code yesterday and I'm trying to
>> understand it. The way they wrote it was
>>
>> subjects = (info[2] for info in items)
>>
>> Perhaps I'm not truly understanding what this does. Does this do
>> anything different than if I wrote
>>
>> for info[2] in items
>>    subject = info[2]
> 
> Close -- the correct form is
> 
> for info in items:
>     subject = info[2]
> 
> Basically, python goes through the elements of items, assigning each one 
> to the name 'info' during that loop; then in the body of the loop, you 
> can access the attributes/elements/methods/whatever of the info object.
> 
> Hope this helps!
> 
> ~Ethan~

Ack.  My correction only dealt with the info[2] issue on the for line; 
Emille's answer properly matches the original code.

Sorry.

~Ethan~