class A:
    x = 1
    def __init__(self):
        self.y = 2

a = A()

class A:
    def __iter__(self):
        yield from range(10)
a = A()
print(5 in a, 20 in a)

import re
sent = 'Hello, Ben! How are you doing?'
lister = filter(None, re.split("[,!?]+", sent))
print(len(list(lister)))

from itertools import product
a = [1, 2]
b = [3, 4]
sum(sum(product(a, b), (0,)))

def f(x):
    try:
        print('1', end=" ")
        y = 1 * 0 if x % 2 else 1 / 0
    except:
        y = 0
        print('2', end=" ")
    else:
        print('3', end=" ")
    finally:
        print('4', end=" ")
    return y

print(f(1) + f(2))

class A:
    def __init__(self, x=0):
        self.x = x
    def f(self):
        print(self.x)
a = A(2020)
f = a.f
print(f.__self__ is a, end=" ")
print(f.__func__ is f, end=" ")
print(f.__func__ is a.f, end=" ")
print(f.__func__ is A.f, end=" ")

class A:
    def __init__(self, x):
        self.x = x
    def __call__(self):
        return self.x
class B:
    def __init__(self, x):
        self.x = x
    def method(self):
        return self.x
class C:
    def __init__(self, x=3):
        self.x = x
    def __repr__(self):
        return str(self.x)

a = A(1)
b = B(2)
c = C(3)
callables = # ваш код
print([act() for act in callables])

#Вывод:     [1, 2, 3]

class A: pass
class B: pass
def f(cls, *args):
    return cls(*args)
a = f(A)
b = f(B)

-2 % 9

from abc import ABC
class L(ABC): pass
# ваш код
print(issubclass(tuple, L))