"python" * 0 is '' * 10

import numpy as np
A = np.random.randint(1, 100, size=(5, 5))
B = A.copy()
B[:, [0, -1]] = B[:, [-1, 0]]
d = lambda x: round(np.linalg.det(x))
print(d(A) + d(B))

print("python".zfill(10))

"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)