To verify black hole number by python

black_hole_4numbers.py

# /usr/bin/env python3
# (c) 2020 SuperSonic (https://github.com/supersonictw)
import random


def int_split(num: int):
    return [i for i in str(num)]


def int_com(num: list):
    s = ""
    for i in num:
        s += i
    return int(s)


for time in range(20):
    t = 0
    x = 0
    y = 0
    timeout = 0
    sample = random.randint(1000, 9999)
    sample_ = int_split(sample)
    print("> {}".format(sample))
    while t != 6174:
        x = sample_.copy()
        x.sort(reverse=False)
        y = sample_.copy()
        y.sort(reverse=True)
        t = int_com(y)-int_com(x)
        timeout += 1
        if timeout is 10:
            break
        elif t is not 6174:
            sample_ = int_split(t)
    if timeout is not 10:
        print("[success] time:{}".format(timeout))
    else:
        print("[timeout]")