[Edu-sig] Reversing dictionaries, closures, permutations etc.
Kirby Urner
urnerk at qwest.net
Fri Jan 23 19:21:26 EST 2004
> I believe this is usually called "inverse". In Python, "reverse"
> means reversing the order of the elements of a list,
> e.g. lst.reverse() and in 2.4 the reversed() built-in.
>
> --Guido van Rossum (home page: http://www.python.org/~guido/)
OK.
It's a bit of a namespace collision actually (between Python usage and the
wider world), as there's a popular notion of a "reverse phone directory"
wherein you lookup names by phone number instead of phone number by name
e.g. http://www.reversephonedirectory.com/ (just found myself by number).
So is 2.4 mylist.reversed() something that returns a list, vs. reverses it
in place? Is there a parallel mylist.sorted()?
Kirby
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