how to iterate all sub-element in a list

[seaspeak at gmail.com]

Mark Lawrence於 2014年1月31日星期五UTC+8下午10時48分46秒寫道：
> I'm pleased to see that you have answers.  In return would you please 
 read and action this https://wiki.python.org/moin/GoogleGroupsPython to 
 prevent us seeing the double line spacing above, thanks.
> My fellow Pythonistas, ask not what our language can do for you, ask 
 what you can do for our language.
> Mark Lawrence

My bad, I replied in a hurry with my mobile.