reslot
A class decorator that lets you use @cached_property on classes with __slots__.
The decorated class needs a __dict__ slot, but there won't exactly be a
dictionary in it. Instead, @reslot will give it a custom MutableMapping
with its own slots. @cached_property will keep its cache there.
The custom MutableMapping's slots will be exactly the slots needed to store
the results of every @cached_property that was on the class at the time it
was declared. This minimizes the memory footprint and makes lookup speedy.
Usage
from functools import cached_property
from reslot import reslot
BEANED = False
@reslot
class Spam:
__slots__ = ("__dict__",)
@cached_property
def eggs(self):
return {"delicious": False}
@cached_property
def beans(self):
global BEANED
BEANED = True
return {"spam": 111000, "delicious": True}
spam = Spam()
print(spam.eggs) # {"delicious": False}
print(BEANED) # False
print(spam.beans) # {"spam": 111000, "delicious": True}
print(BEANED) # True
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Metadata
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Release files for reslot 0.10
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| reslot-0.10-py3-none-any.whl | Python 3 | none | any | Details |
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| Size | 3.9 kB |
| Tags | Python 3 |
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