On 2016-12-15 12:06 PM, Steve D'Aprano wrote:
I have about a million or two keys, with a few hundred or perhaps a few
thousand distinct values. The size of each contiguous group of keys with
the same value can vary from 1 to perhaps a hundred or so.
There isn't enough info in your post to be sure but if those values are
constant then you might be able to subclass dict and write a new
__getitem__ that checks for specific ranges and calls the superclass
only if not in the known ranges. For example:
class MyDict(dict):
def __getitem__(self, key):
if isinstance(key, int) and key >= 1 and key <= 100:
return "foo"
return dict.__getitem__(self, key)
Obviously that middle section can be as complex as you need.
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