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  1. docs/zh/docs/environment-variables.md

    Hello Wade Wilson
    ```
    
    </div>
    
    ////
    
    ## 在 Python 中读取环境变量 { #read-env-vars-in-python }
    
    你也可以在 Python **之外**的终端中创建环境变量(或使用任何其他方法),然后在 Python 中**读取**它们。
    
    例如,你可以创建一个名为 `main.py` 的文件,其中包含以下内容:
    
    ```Python hl_lines="3"
    import os
    
    name = os.getenv("MY_NAME", "World")
    print(f"Hello {name} from Python")
    ```
    
    /// tip | 提示
    
    第二个参数是 [`os.getenv()`](https://docs.python.org/3.8/library/os.html#os.getenv) 的默认返回值。
    
    Created: Sun Apr 05 07:19:11 GMT 2026
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  2. docs/en/docs/index.md

        return {"item_id": item_id, "q": q}
    ```
    
    <details markdown="1">
    <summary>Or use <code>async def</code>...</summary>
    
    If your code uses `async` / `await`, use `async def`:
    
    ```Python hl_lines="7  12"
    from fastapi import FastAPI
    
    app = FastAPI()
    
    
    @app.get("/")
    async def read_root():
        return {"Hello": "World"}
    
    
    @app.get("/items/{item_id}")
    Created: Sun Apr 05 07:19:11 GMT 2026
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  3. docs/zh-hant/docs/tutorial/response-model.md

    但如果你的資料在模型中對於有預設值的欄位也有實際值,例如 ID 為 `bar` 的項目:
    
    ```Python hl_lines="3  5"
    {
        "name": "Bar",
        "description": "The bartenders",
        "price": 62,
        "tax": 20.2
    }
    ```
    
    它們會被包含在回應中。
    
    #### 與預設值相同的資料 { #data-with-the-same-values-as-the-defaults }
    
    如果資料的值與預設值相同,例如 ID 為 `baz` 的項目:
    
    ```Python hl_lines="3  5-6"
    {
        "name": "Baz",
        "description": None,
    Created: Sun Apr 05 07:19:11 GMT 2026
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  4. docs/ja/docs/index.md

        return {"item_id": item_id, "q": q}
    ```
    
    <details markdown="1">
    <summary>または <code>async def</code> を使います...</summary>
    
    コードで `async` / `await` を使用する場合は、`async def` を使います。
    
    ```Python hl_lines="7  12"
    from fastapi import FastAPI
    
    app = FastAPI()
    
    
    @app.get("/")
    async def read_root():
        return {"Hello": "World"}
    
    
    @app.get("/items/{item_id}")
    Created: Sun Apr 05 07:19:11 GMT 2026
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  5. docs/zh-hant/docs/tutorial/first-steps.md

         <span style="background-color:#007166"><font color="#D3D7CF"> INFO </font></span>  Application startup complete.
    ```
    
    </div>
    
    在輸出中,有一列類似於:
    
    ```hl_lines="4"
    INFO:     Uvicorn running on http://127.0.0.1:8000 (Press CTRL+C to quit)
    ```
    
    那列顯示了你的應用程式正在本地端機器上運行的 URL。
    
    ### 查看它 { #check-it }
    
    在瀏覽器中打開 [http://127.0.0.1:8000](http://127.0.0.1:8000)。
    
    Created: Sun Apr 05 07:19:11 GMT 2026
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  6. docs/ko/docs/tutorial/body-nested-models.md

    `list`, `set` 등의 서브타입으로 Pydantic 모델을 사용할 수도 있습니다:
    
    {* ../../docs_src/body_nested_models/tutorial006_py310.py hl[18] *}
    
    아래와 같은 JSON 본문을 예상(변환, 검증, 문서화 등)합니다:
    
    ```JSON hl_lines="11"
    {
        "name": "Foo",
        "description": "The pretender",
        "price": 42.0,
        "tax": 3.2,
        "tags": [
            "rock",
            "metal",
            "bar"
        ],
        "images": [
    Created: Sun Apr 05 07:19:11 GMT 2026
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  7. docs/zh/docs/tutorial/body-nested-models.md

    ## 带有一组子模型的属性 { #attributes-with-lists-of-submodels }
    
    你还可以将 Pydantic 模型用作 `list`、`set` 等的子类型:
    
    {* ../../docs_src/body_nested_models/tutorial006_py310.py hl[18] *}
    
    这将期望(转换,校验,记录文档等)下面这样的 JSON 请求体:
    
    ```JSON hl_lines="11"
    {
        "name": "Foo",
        "description": "The pretender",
        "price": 42.0,
        "tax": 3.2,
        "tags": [
            "rock",
            "metal",
            "bar"
        ],
        "images": [
    Created: Sun Apr 05 07:19:11 GMT 2026
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  8. docs/ko/docs/tutorial/handling-errors.md

    이제 다음처럼 유효하지 않은 item을 보내보세요:
    
    ```JSON
    {
      "title": "towel",
      "size": "XL"
    }
    ```
    
    받은 body를 포함해 데이터가 유효하지 않다고 알려주는 응답을 받게 됩니다:
    
    ```JSON hl_lines="12-15"
    {
      "detail": [
        {
          "loc": [
            "body",
            "size"
          ],
          "msg": "value is not a valid integer",
          "type": "type_error.integer"
        }
      ],
    Created: Sun Apr 05 07:19:11 GMT 2026
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  9. docs/fr/docs/index.md

        return {"item_id": item_id, "q": q}
    ```
    
    <details markdown="1">
    <summary>Ou utilisez <code>async def</code>...</summary>
    
    Si votre code utilise `async` / `await`, utilisez `async def` :
    
    ```Python hl_lines="7  12"
    from fastapi import FastAPI
    
    app = FastAPI()
    
    
    @app.get("/")
    async def read_root():
        return {"Hello": "World"}
    
    
    @app.get("/items/{item_id}")
    Created: Sun Apr 05 07:19:11 GMT 2026
    - Last Modified: Thu Mar 19 18:37:13 GMT 2026
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  10. docs/ja/docs/python-types.md

    これは「ユニオン(union)」と呼ばれます。変数がそれら 2 つの型の集合の和集合のいずれかになり得るからです。
    
    ```Python hl_lines="1"
    {!> ../../docs_src/python_types/tutorial008b_py310.py!}
    ```
    
    これは `item` が `int` または `str` になり得ることを意味します。
    
    #### `None` の可能性 { #possibly-none }
    
    値が `str` のような型を持つ可能性がある一方で、`None` にもなり得ることを宣言できます。
    
    //// tab | Python 3.10+
    
    ```Python hl_lines="1"
    {!> ../../docs_src/python_types/tutorial009_py310.py!}
    ```
    
    ////
    Created: Sun Apr 05 07:19:11 GMT 2026
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