Hi all, thanks for your contributions. To Robert Kern I can replay that I know BeautifulSoap, but mine wanted to be a "generalization" (only incidentally used in a web parsing application). The fact is that, beeing a "macho newbie" programmer (the "macho" is from Steven D'Aprano), I wanted to show how beaufiful solutions I can find... Luckily there is Joe who shows me that he most of my "beautiful" code (working, of course!) can be replaced by: list=p.split(s) Bernard... don't get angry, but I prefer the solution of Joe. It is more general, and, besides that, for me "pythonic" means simple and short (I may be wrong...). By the way, I have found an alternative solution to the problem of lists "unique", without sorting, but non beeing enough "macho"... Bye.
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