Recommended data structure for newbie

[Paul McGuire]

"manstey" <manstey at csu.edu.au> wrote in message
news:1146626916.066395.206540 at y43g2000cwc.googlegroups.com...
> Hi,
>
> I have a text file with about 450,000 lines. Each line has 4-5 fields,
> separated by various delimiters (spaces, @, etc).
>
> I want to load in the text file and then run routines on it to produce
> 2-3 additional fields.
>

<snip>

Matthew -

If you find re's to be too cryptic, here is an example using p