> For the complete documentation index, see [llms.txt](https://listen-lavender.gitbook.io/prefect-docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://listen-lavender.gitbook.io/prefect-docs/tasklibrary/functions.md).

# Function.函数

FunctionTask能将任何普通函数转换为task，带有输入和输出。用户通常会通过Prefect的@task装饰器定义函数为task：

```python
@task
def add_one(x):
    return x + 1

# roughly equivalent to:
FunctionTask(fn=lambda x: x + 1)
```

## FunctionTask

一个方便的task生成方式是函数式的在任意可调用的运行方法创建Task实例。这也是Prefect的@task装饰器的底层实现。

[API参考文档](https://docs.prefect.io/api/latest/tasks/function.html#prefect-tasks-core-function-functiontask)

* [Prefect官网](https://www.prefect.io/)
* [英版原文](https://docs.prefect.io/api/latest/tasks/function.html)
* [联系译者](https://github.com/listen-lavender)