Fredrik Lundh wrote: > Consider a dictionary with one million items. The following operations > > k = d.keys() > v = d.values() > > creates two list objects, while > > i = d.items() > > creates just over one million objects. In your "equivalent" example, > you're calling d.items() twice to produce two million objects, none > of which you really care about.
This is what I get from the doc : a.items() a copy of a's list of (key, value) pairs (3) a.keys() a copy of a's list of keys (3) a.values() a copy of a's list of values I can't derive what you mean by "two list objects" vs "million objects". -- http://mail.python.org/mailman/listinfo/python-list
