python - 如何从列表中随机选择一个项目？(How to randomly select an item from a list?)

Question

Assume I have the following list:

(假设我有以下列表：)

foo = ['a', 'b', 'c', 'd', 'e']

What is the simplest way to retrieve an item at random from this list?

(从此列表中随机检索项目的最简单方法是什么？)

  ask by Ray Vega translate from so

Answer 1

Use random.choice()

(使用random.choice())

import random

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

For cryptographically secure random choices (eg for generating a passphrase from a wordlist), use random.SystemRandom class

(对于加密安全的随机选择（例如，用于从单词列表生成密码短语），请使用random.SystemRandom类)

import random

foo = ['battery', 'correct', 'horse', 'staple']
secure_random = random.SystemRandom()
print(secure_random.choice(foo))

or secrets.choice()

(或secrets.choice())

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