tricky regular expressions

[Petr Jakes]

try to google for "finit state machine" OR "state machine" OR FSM

titles =["USELESS DATA","Request : Play",
"USELESS DATA","Title: Beethoven's 5th",
"USELESS DATA","Request : next","USELESS DATA",
"Title:  song# 2 ","USELESS DATA","Request : Play",
"USELESS DATA","Title: Beethoven's 5th",
"USELESS DATA","Request : next","USELESS DATA",
"Title:  song# 3 ","USELESS DATA","Request : Play"]


for title in range(len(titles)):
    if titles[title][:6] =="Title:":
        x=1
        try:
            while titles[title+x]!="Request : Play" and
titles[title+x]!="Request : next":
                x+=1
                pass
            print titles[title], titles[title+x]
        except IndexError: pass


HTH

Petr Jakes
PS: just wonder why are you asking the same question in two different
topics....