> For the complete documentation index, see [llms.txt](https://eastlakeside.gitbook.io/interpy-zh/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://eastlakeside.gitbook.io/interpy-zh/decorators/your_first_decorator/auth.md).

# 授权

装饰器能有助于检查某个人是否被授权去使用一个 web 应用的端点（endpoint）。它们被大量使用于 Flask 和 Django web 框架中。这里是一个例子来使用基于装饰器的授权：

```python
from functools import wraps

def requires_auth(f):
    @wraps(f)
    def decorated(*args, **kwargs):
        auth = request.authorization
        if not auth or not check_auth(auth.username, auth.password):
            authenticate()
        return f(*args, **kwargs)
    return decorated
```