康威生命游戏中的所有细胞都是活的

Question

我尝试使用以下代码在 Python-3.6 中实现 Conway 的生活游戏：

import numpy as np
import time

screen = np.zeros((25,25),dtype=np.int)
while True:
    print(screen)
    command = input('command?')
    if command[0] == 'x':
        command = command.split(' ')
        x = int(command[0][1:])
        y = int(command[1][1:])
        if screen[x][y] == 0:
            screen[x][y] = 1
        else:
            screen[x][y] = 0
    elif command == 'start':
        break

while True:
    for x in range(len(screen)):
        for y in range(len(screen[x])):
            neighbors = 0
            if x != len(screen)-1:
                neighbors += screen[x+1][y]
            if x != 0:
                neighbors += screen[x-1][y]
            if y != len(screen[x])-1:
                neighbors += screen[x][y+1]
            if y != 0:
                neighbors += screen[x][y-1]
            if x != len(screen)-1 and y != len(screen[x])-1:
                neighbors += screen[x+1][y+1]
            if x != 0 and y != 0:
                neighbors += screen[x-1][y-1]
            if 0 and y != len(screen[x])-1:
                neighbors += screen[x-1][y+1]
            if x != len(screen)-1 and y != 0:
                neighbors += screen[x+1][y-1]

            if screen[x][y] == 0 and neighbors == 3:
                screen[x][y] = 1
            elif screen[x][y] == 1 and neighbors < 2:
                screen[x][y] == 0
            elif screen[x][y] == 1 and neighbors > 3:
                screen[x][y] == 0
            elif screen[x][y] == 1 and neighbors == 2 or 3:
                screen[x][y] = 1
    print(screen)
    time.sleep(0.1)

问题是，当我尝试使用任何图形运行此代码时，所有单元格在第一代立即设置为 1，并且不会消亡。

谁能告诉我代码中的问题是什么以及如何解决？

Answer 1

您的问题似乎在这里：

        elif screen[x][y] == 1 and neighbors == 2 or 3:

你不能这样做（好吧，你可以，但它并没有达到你的预期）。而是尝试：

        elif screen[x][y] == 1 and neighbors in (2 , 3):

（或in {2, 3}）。

查看this question了解更多信息。