"I have 10 cars".isalnum()

-True % 13 + True % 13

from math import log
from functools import reduce
f = lambda acc, x: x * acc
gen = (abs(log(i / 10)) for i in range(1, 1000))
print(int(reduce(f, gen, 1)))

from random import randint
num = randint(10**8, 10**20)
s = bin(num)[2:].replace('0', '\n').replace('1', '\t')
print(s.isspace())

class MyList(list):
    def __iter__(self):
        return iter(self*2)
m = MyList([1, 2, 3])
print(list(m))

 << 2) + (20 >> 2)

f = lambda x: isinstance(x, int)
print(f(1), f(1.0), f(True), f(1j))

g = (str(i**2) for i in range(1, 4))
print("".join(g) + "".join(g))

class D:
    __slots__ = ["a", "__dict__"]
    def __init__(self):
        self.b = 2
d = D()
d.a = 1
d.c = 3
print(sorted(d.__dict__.values()))