On 22-5-2011 0:55, John Nagle wrote: > On 5/19/2011 11:33 PM, Ulrich Eckhardt wrote: > >> For that reason, it is generally useful to use immutable types like >> integers, floats, strings and tuples thereof as keys. Since you can't change >> them, you basically have the guarantee that they hash the same. > > Right. It's something of a lack that Python doesn't > have user-defined immutable objects. > > John Nagle >
collections.namedtuple is rather powerful though... and can be used as key AFAIK. Irmen -- http://mail.python.org/mailman/listinfo/python-list
