如何产生一个随机数

1. 使用编程语言内置函数

Python:

```python

import random

```

JavaScript:

```javascript

```

[Random.org](https://www.random.org/)

[Random Integer Generator](https://www.randomnumbergenerator.com/)

5. 使用操作系统提供的工具

Linux:

```bash

```

Windows:

```cmd

>for /f "tokens=2 delims==" %%i in ('wmic os get localdatetime /value') do set datetime=%%i

>for /f "tokens=2 delims==" %%i in ('wmic os get localdatetime /value') do set datetime=%%i

>set /a "randnum=%%datetime %% 10000"

>echo %randnum%

```