a = [1, 2, 3, 3]
b = {1, 2, 3, 3}
print(set(a) == b, list(b) == a)

a = [1, 5, 7]
b = [2, 4, 6]
c = a.extend(b)
print(c)

d = {1: 'first', 2: 'second'}
d[4] = None
print(len(d))

x = 5
print([y//2 for y in range(6)][x])

3^2

print((lambda x: print("hello", end="") or x*2)("hi"))

name = {
    124: "A",
    444: "B",
    952: "C"}
user_id = 375
print(name.get(user_id, "D"))

s = list(map(lambda x: x * x, (1, 2, 3, 4)))
print(s)

s = list(map(lambda x, y: x + y, [1, 2, 3], [4, 5, 6]))
print(s)