Benchmark of Django and Python's cached_property decorators

bench_cached_property_decorator.py

import pyperf
from django.utils.functional import cached_property as dj_cached_property
from functools import cached_property as py_cached_property


class TestClass:
    @dj_cached_property
    def dj_cached(self):
        return "Test"

    @py_cached_property
    def py_cached(self):
        return "Test"


t = TestClass()


def django_cache(loops):
    range_it = range(loops)
    t0 = pyperf.perf_counter()

    for loop in range_it:
        t.dj_cached
        t.dj_cached
        t.dj_cached
        t.dj_cached
        t.dj_cached
        t.dj_cached
        t.dj_cached
        t.dj_cached
        t.dj_cached
        t.dj_cached

    return pyperf.perf_counter() - t0


def python_cache(loops):
    range_it = range(loops)
    t0 = pyperf.perf_counter()

    for loop in range_it:
        t.py_cached
        t.py_cached
        t.py_cached
        t.py_cached
        t.py_cached
        t.py_cached
        t.py_cached
        t.py_cached
        t.py_cached
        t.py_cached

    return pyperf.perf_counter() - t0


runner = pyperf.Runner()
runner.bench_time_func("Django Cache", django_cache)
runner.bench_time_func("Python Cache", python_cache)

python bench_cached_property.py
.....................
Django Cache: Mean +- std dev: 1.07 us +- 0.05 us
.....................
Python Cache: Mean +- std dev: 1.08 us +- 0.05 us

Can't be bothered to register to Django Trac but, https://bugs.python.org/issue43468 might be something you'd want to consider...

Thanks for highlighting this!

You're welcome :D