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docs/en/docs/advanced/testing-events.md
# Testing Events: startup - shutdown When you need your event handlers (`startup` and `shutdown`) to run in your tests, you can use the `TestClient` with a `with` statement: ```Python hl_lines="9-12 20-24" {!../../../docs_src/app_testing/tutorial003.py!}
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docs/en/docs/advanced/middleware.md
app = SomeASGIApp() new_app = UnicornMiddleware(app, some_config="rainbow") ``` But FastAPI (actually Starlette) provides a simpler way to do it that makes sure that the internal middlewares to handle server errors and custom exception handlers work properly. For that, you use `app.add_middleware()` (as in the example for CORS). ```Python from fastapi import FastAPI from unicorn import UnicornMiddleware app = FastAPI()
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docs/en/docs/tutorial/handling-errors.md
## Override the default exception handlers **FastAPI** has some default exception handlers. These handlers are in charge of returning the default JSON responses when you `raise` an `HTTPException` and when the request has invalid data. You can override these exception handlers with your own. ### Override request validation exceptions
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docs/en/docs/advanced/events.md
{!../../../docs_src/events/tutorial001.py!} ``` In this case, the `startup` event handler function will initialize the items "database" (just a `dict`) with some values. You can add more than one event handler function. And your application won't start receiving requests until all the `startup` event handlers have completed. ### `shutdown` event
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docs/zh/docs/tutorial/handling-errors.md
假设要触发的自定义异常叫作 `UnicornException`。 且需要 FastAPI 实现全局处理该异常。 此时,可以用 `@app.exception_handler()` 添加自定义异常控制器: ```Python hl_lines="5-7 13-18 24" {!../../../docs_src/handling_errors/tutorial003.py!} ``` 请求 `/unicorns/yolo` 时,路径操作会触发 `UnicornException`。 但该异常将会被 `unicorn_exception_handler` 处理。 接收到的错误信息清晰明了,HTTP 状态码为 `418`,JSON 内容如下: ```JSON
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docs/em/docs/tutorial/handling-errors.md
& 👆 💚 🍵 👉 ⚠ 🌐 ⏮️ FastAPI. 👆 💪 🚮 🛃 ⚠ 🐕🦺 ⏮️ `@app.exception_handler()`: ```Python hl_lines="5-7 13-18 24" {!../../../docs_src/handling_errors/tutorial003.py!} ``` 📥, 🚥 👆 📨 `/unicorns/yolo`, *➡ 🛠️* 🔜 `raise` `UnicornException`. ✋️ ⚫️ 🔜 🍵 `unicorn_exception_handler`. , 👆 🔜 📨 🧹 ❌, ⏮️ 🇺🇸🔍 👔 📟 `418` & 🎻 🎚: ```JSON
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docs/ru/docs/tutorial/dependencies/dependencies-with-yield.md
opt raise dep -->> handler: Raise HTTPException handler -->> client: HTTP error response dep -->> dep: Raise other exception end dep ->> operation: Run dependency, e.g. DB session opt raise operation -->> dep: Raise HTTPException dep -->> handler: Auto forward exception handler -->> client: HTTP error response
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docs/en/docs/tutorial/dependencies/dependencies-with-yield.md
This was changed in version 0.110.0 to fix unhandled memory consumption from forwarded exceptions without a handler (internal server errors), and to make it consistent with the behavior of regular Python code.
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docs/en/docs/how-to/async-sql-encode-databases.md
So, you will be able to see it all in the interactive API docs. ## Connect and disconnect * Create your `FastAPI` application. * Create event handlers to connect and disconnect from the database. ```Python hl_lines="42 45-47 50-52" {!../../../docs_src/async_sql_databases/tutorial001.py!} ``` ## Read notes Create the *path operation function* to read notes:
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docs/ja/docs/tutorial/handling-errors.md
そして、この例外をFastAPIでグローバルに処理したいと思います。 カスタム例外ハンドラを`@app.exception_handler()`で追加することができます: ```Python hl_lines="5 6 7 13 14 15 16 17 18 24" {!../../../docs_src/handling_errors/tutorial003.py!} ``` ここで、`/unicorns/yolo`をリクエストすると、*path operation*は`UnicornException`を`raise`します。 しかし、これは`unicorn_exception_handler`で処理されます。 そのため、HTTPステータスコードが`418`で、JSONの内容が以下のような明確なエラーを受け取ることになります: ```JSON
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