Lookup in list vs dict

results.txt

.....................
dict[int]: Mean +- std dev: 28.2 ns +- 1.3 ns
.....................
list[int]: Mean +- std dev: 105 ns +- 5 ns

test.py

import perf

def bench_dict(loops, d):
    range_it = range(loops)
    t0 = perf.perf_counter()

    for _ in range_it:
        8 in d
        3 in d
        8 in d
        4 in d
        2 in d
        3 in d
        2 in d
        7 in d
        9 in d
        7 in d

    return perf.perf_counter() - t0


def bench_list(loops, l):
    range_it = range(loops)
    t0 = perf.perf_counter()

    for _ in range_it:
        8 in l
        3 in l
        8 in l
        4 in l
        2 in l
        3 in l
        2 in l
        7 in l
        9 in l
        7 in l

    return perf.perf_counter() - t0


d = {k: k for k in range(60)}
l = list(range(60))
runner = perf.Runner()
runner.bench_time_func('dict[int]', bench_dict, d, inner_loops=10)
runner.bench_time_func('list[int]', bench_list, l, inner_loops=10)