boblatest:
> I have a long list of memory-heavy objects that I would like to access
> in differently sorted order. Let's say I'd like to have lists called
> by_date or by_size that I can use to access the objects in the
> specified order.
Just create a new list with a different sorting order, for example
using:
from operator import attrgetter
by_date = sorted(input_data, key=attrgetter("date"))
by_size = sorted(input_data, key=attrgetter("size"))
Python doesn't copy by value by default, so you end having just a
light list of references.
To understand the situation better, there's a FAQ about how Python
associates names to things.
Bye,
bearophile
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