import timeit
from abc import ABC, abstractmethod


class A(ABC):
    @abstractmethod
    def a(self):
        ...


class B(A):
    def a(self):
        return 1


class C:
    def a(self):
        return 1


def test_abc():
    b = B()
    b.a()


def test_no_abc():
    c = C()
    c.a()


NUM_RUNS = 10 ** 7
abc_time = timeit.Timer(test_abc).timeit(number=NUM_RUNS)
no_abc_time = timeit.Timer(test_no_abc).timeit(number=NUM_RUNS)
print(f'w/ ABC: {abc_time:.2}')
print(f'w/o ABC: {no_abc_time:.2}')