Sorted and reversed on huge dict ?
fredrik at pythonware.com
Fri Nov 3 20:51:13 CET 2006
Paul Rubin wrote:
>> items = d.items()
>> items.sort(key=operator.itemgetter(1), reverse=True)
>> the items list would require a couple of megabytes for 150k dictionary
>> entries, or so. the key map needs some memory too, but the rest of
>> the sort is done in place.
> I think the OP's method avoided the key map.
right. I should have written "most efficient", not memory efficient.
the items+itemgetter approach is a bit faster, but uses a few extra
megabytes of memory temporarily, during the sort.
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