Feel hard to learn the topic about " Parsing"

[Larz60+]

If you still want to look at example python code, see: http://nullege.com/codes/search?cq=regex
And http://nullege.com/codes/search?cq=regex.compile

You can try other cq= values, for example, regex.allregex, regex.ASCII

Ofnuts has the best advise here. I've rarely met an O'Reilly book I didn't like