print(round(8.5), round(8.51), round(9.5), end = ' ')

import copy
l = [0, 'hi', [1, 2]]
m1 = copy.deepcopy(l)
m2 = copy.copy(l)
print((l[0] is m2[0]), (l[1] is m1[1]), (l[2] is m1[2]))

class A:
    x = 1
    
class B(A):
    pass

class C(A):
    pass

A.x = 2
B.x = 3

print(B.x, C.x)

print(1 and 2 and 3)

from typing import Final
x: Final = 'hi'
x = 'hello'
print(x)

a = None
print(a is None is True)

a = None
b = None
a is b is None

a = (100, 2)
b = (1, 103)
print(a > b)

a = {0, 1, 2}
print(a[1])

arr = [1, 3, "a", 2]
arr.sort()
print(arr)