How to use demo of python random library

Python random library simple use demo

When we need to generate random numbers or randomly select elements from a sequence, we can use Python's built-in random library. Here is an annotated example that demonstrates how to use the random library:

# 导入 random 库
import random
# 生成一个 0 到 1 之间的随机小数
random_float = random.random()
print(random_float)
# 生成一个指定范围内的随机整数（包括端点）
random_int = random.randint(1, 10)
print(random_int)
# 从列表中随机选择一个元素
my_list = ["apple", "banana", "cherry"]
random_element = random.choice(my_list)
print(random_element)
# 打乱列表的顺序
my_list2 = ["apple", "banana", "cherry"]
random.shuffle(my_list2)
print(my_list2)
# 从指定概率分布中随机选择一个元素（这里是一个二项分布）
random_binomial = random.choices([0, 1], weights=[0.7, 0.3])
print(random_binomial)
# 从指定序列中随机选择多个元素（这里选择两个元素）
my_list3 = ["apple", "banana", "cherry", "date"]
random_sample = random.sample(my_list3, k=2)
print(random_sample)

The output may look like this:

0.6253281864829788
5
banana
['banana', 'cherry', 'apple']
[1]
['banana', 'date']

The above code provides common random operations, But that's not all. The random library also provides many APIs that can be used flexibly according to needs.

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