Processing text using python

[Roy Smith]

In article <1140451760.998278.90430 at g43g2000cwa.googlegroups.com>,
 "nuttydevil" <sjw28 at sussex.ac.uk> wrote:

> Hey everyone! I'm hoping someone will be able to help me, cause I
> haven't had success searching on the web so far... I have large chunks
> of text ( all in a long string) that are currently all in separate
> notebook files. I want to use python to read these strings of text,
> THREE CHARACTERS AT A TIME. (I'm studying the genetic code you see, so
> I need to read and analyse each sequence one codon at a time
> effectively.) Does anyone have any idea of how to do this using python?

Don't reinvent the wheel.  Take a look at http://www.biopython.org/.