There is the re module, which I think is not usually loaded in sage:

http://docs.python.org/library/re.html

Also, if you are doing sequence analysis you definitely want to
install the optional biopython package if you haven't already.

Cheers,
Marshall Hampton

On Nov 29, 10:03 am, Yotam Avital <yota...@gmail.com> wrote:
> Hi.
>
> I'm considering using sage as the main tool for my Ph.D research that will
> start soon. My research will involve some analysis of proteins and DNA data
> (such as sequence). Is there a tool in sage for text analysis? mostly
> regular expressions.
>
> I assume there is a tool built it in python.
>
> Thanks.
>
> Yotam

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