Python随机选择在每个循环迭代中返回相同的结果

Question

有人知道为什么当我运行这段代码时，会将同一个字典条目追加100次吗

from random import choice

aliens = []
alien = {}

colors = ['red', 'blue', 'green', 'black', 'purple', 'brown', 'yellow', 'coral']
points = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
speeds = ['slow', 'medium', 'fast']

for i in range(1,101):
    alien['color'] = choice(colors)
    alien['points'] = choice(points)
    alien['speed'] = choice(speeds)
    aliens.append(alien)

print(aliens)

Answer 1

该链接存储字典和列表，并将其添加到另一个列表中，您只需创建指向同一字典的新链接。只需使用alien.copy()

from random import choice

aliens = []
alien = {}

colors = ['red', 'blue', 'green', 'black', 'purple', 'brown', 'yellow', 'coral']
points = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
speeds = ['slow', 'medium', 'fast']

for i in range(1,101):
    alien['color'] = choice(colors)
    alien['points'] = choice(points)
    alien['speed'] = choice(speeds)
    aliens.append(alien.copy())

print(aliens)