2020-09-14 20:48:03 +08:00
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# NoneBot.permission 模块
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## 权限
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每个 `Matcher` 拥有一个 `Permission` ，其中是 **异步** `PermissionChecker` 的集合，只要有一个 `PermissionChecker` 检查结果为 `True` 时就会继续运行。
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:::tip 提示
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`PermissionChecker` 既可以是 async function 也可以是 sync function
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:::
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2021-05-30 11:07:27 +08:00
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## _class_ `Permission`
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基类：`object`
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* **说明**
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`Matcher` 规则类，当事件传递时，在 `Matcher` 运行前进行检查。
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* **示例**
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```python
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Permission(async_function) | sync_function
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# 等价于
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from nonebot.utils import run_sync
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Permission(async_function, run_sync(sync_function))
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```
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### `__init__(*checkers)`
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* **参数**
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* `*checkers: Callable[[Bot, Event], Awaitable[bool]]`: **异步** PermissionChecker
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### `checkers`
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* **说明**
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存储 `PermissionChecker`
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* **类型**
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* `Set[Callable[[Bot, Event], Awaitable[bool]]]`
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### _async_ `__call__(bot, event)`
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* **说明**
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检查是否满足某个权限
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* **参数**
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* `bot: Bot`: Bot 对象
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* `event: Event`: Event 对象
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* **返回**
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* `bool`
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2020-09-14 20:48:03 +08:00
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## `MESSAGE`
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* **说明**: 匹配任意 `message` 类型事件，仅在需要同时捕获不同类型事件时使用。优先使用 message type 的 Matcher。
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## `NOTICE`
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* **说明**: 匹配任意 `notice` 类型事件，仅在需要同时捕获不同类型事件时使用。优先使用 notice type 的 Matcher。
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## `REQUEST`
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* **说明**: 匹配任意 `request` 类型事件，仅在需要同时捕获不同类型事件时使用。优先使用 request type 的 Matcher。
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## `METAEVENT`
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* **说明**: 匹配任意 `meta_event` 类型事件，仅在需要同时捕获不同类型事件时使用。优先使用 meta_event type 的 Matcher。
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## `USER(*user, perm=<nonebot.permission.Permission object>)`
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* **说明**
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在白名单内且满足 perm
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* **参数**
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2020-12-13 12:53:33 +08:00
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* `*user: str`: 白名单
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2020-09-14 20:48:03 +08:00
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* `perm: Permission`: 需要同时满足的权限
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## `SUPERUSER`
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* **说明**: 匹配任意超级用户消息类型事件
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