How to get the selected text of the webpage in chrome through python ?

[iMath]

在 2013年1月8日星期二UTC+8下午12时20分28秒，iMath写道：
> How to get the selected text of the webpage in chrome through python ?

I need the code ,cuz  I am only familiar with Python ,so it would be better to give me the code written in Python .
You can also give me the code in other programming language   ,thanks in advance :)