On Thu, Sep 8, 2011 at 9:59 PM, Alan Gauld <alan.ga...@btinternet.com> wrote: > On 08/09/11 14:02, lina wrote: >> >> Hi, >> >> I failed to understand the "collpase" meaning in a string. >> >> can someone give me a simple example? > > Can you give us some context? > Its not a method of a string object so far as I can tell? > Where did you read about it?
>From "dive into python", http://diveintopython.org/ one example: def info(object, spacing=10, collapse=1): """Print methods and docs strings. Take modules, class, list, dictionary, or strong.""" methodList = [e for e in dir(object) if callable(getattr(object, e))] processFunc = collapse and (lambda s: " ".join(s.split())) or (lambda s: s) print "\n".join(["%s %s" % (method.ljust(spacing), processFunc(str(getattr(object, method).__doc__))) for method in methodList]) if __name__ == "__main__": print info.__doc__ I felt so hard to understand the collapse, Please don't discourage me telling me it's an old book, To me I started reading till 42 pages. let me finish it. I used to study python on and off, sometimes give a whole week, but due to not using it, so it's frustrating that when I really needed it, I barely could complete one. > > -- > Alan G > Author of the Learn to Program web site > http://www.alan-g.me.uk/ > > _______________________________________________ > Tutor maillist - Tutor@python.org > To unsubscribe or change subscription options: > http://mail.python.org/mailman/listinfo/tutor > -- Best Regards, lina _______________________________________________ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
