Python从列表中随机选择元素的多种实现方法

import random

foo = ['a', 'b', 'c', 'd', 'e']
print(random.choice(foo))

import secrets

foo = ['battery', 'correct', 'horse', 'staple']
print(secrets.choice(foo))

import random

secure_random = random.SystemRandom()
foo = ['a', 'b', 'c', 'd', 'e']
print(secure_random.choice(foo))

import random
group_of_items = {'a', 'b', 'c', 'd', 'e'}
num_to_select = 2
list_of_random_items = random.sample(group_of_items, num_to_select)
first_random_item = list_of_random_items[0]
second_random_item = list_of_random_items[1]
print(first_random_item, second_random_item)

import numpy as np
foo = ['a', 'b', 'c', 'd', 'e']
print(np.random.choice(foo))

np.random.seed(123)
print(np.random.choice(foo))

print(np.random.choice(foo, 5))  # 有放回抽样
print(np.random.choice(foo, 5, False))  # 无放回抽样

from random import randrange
foo = ['a', 'b', 'c', 'd', 'e']
random_index = randrange(len(foo))
print(foo[random_index])

import random
foo = ['a', 'b', 'c', 'd', 'e']
randomindex = random.randint(0, len(foo) - 1)
print(foo[randomindex])

import random
import secrets
import numpy as np

# random.choice()
foo = ['a', 'b', 'c', 'd', 'e']
print(random.choice(foo))

# secrets.choice()
bar = ['battery', 'correct', 'horse', 'staple']
print(secrets.choice(bar))

# random.sample()
group = {'a', 'b', 'c', 'd', 'e'}
num = 2
print(random.sample(group, num))

# numpy.random.choice()
print(np.random.choice(foo))