Conway's Game of Life written in Python, except classes : via 'Stop Writing Classes' https://youtu.be/o9pEzgHorH0?t=1178

lifegame.py

from itertools import chain
import time

def neighbors(point):
    x, y = point
    return ((x + i, y + j) for i in [-1, 0, 1] for j in [-1, 0, 1] if (i, j) != (0, 0))


def is_living(point, live_cells):
    count = sum(1 for n in neighbors(point) if n in live_cells)
    return count == 3 or (count == 2 and point in live_cells)


def advance(live_cells):
    cells = live_cells | set(chain.from_iterable(neighbors(p) for p in live_cells))
    return set(x for x in cells if is_living(x, live_cells))


def print_board(live_cells):
    for y in range(15):
        for x in range(30):
            mark = "*" if (x, y) in live_cells else "-"
            print(mark, end='')
        print("")


live_cells = {(0, 1), (1, 2), (2, 0), (2, 1), (2, 2)}
live_cells = live_cells | set((x + 5, y + 3) for (x, y) in live_cells)
print_board(live_cells)

while True:
    time.sleep(0.3)
    print("\033[15A\r", end='')

    live_cells = advance(live_cells)
    print_board(live_cells)