# time模块

计算机的系统时钟一般都会设置为特定的日期、时间和时区，例如笔记本的系统时间设置格式为24小时制，东八区，北京时间。在`time` 模块中，最见的有`time.time()` 和 `time.sleep()` 函数。

```python
import time

now = time.time()
localtime = time.localtime(now)
```

## time.time()函数

Unix纪元是编程中经常参考的时间：1970年1月1日0点，即**UTC时间**。`time.time()` 返回的就是自从UTC时间开始后的秒数，是一个浮点对象`<float>`。

## time.sleep()函数

通常在程序需要暂停的地方使用，可以传入需要程序暂停的秒数。

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