import pyperf
from pyperf import Runner


class Descr:

    def __init__(self, value):
        self.value = value

    def __get__(self, instance, owner):
        return self.value


class A:
    x = Descr(1)


def bench(loops):
    a = A()
    t1 = pyperf.perf_counter()
    for _ in range(loops):
        a.x
    t2 = pyperf.perf_counter()
    return t2 - t1


runner = Runner()
runner.bench_time_func('descriptor', bench)