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  1. docs/ja/docs/tutorial/path-params.md

            }
        ]
    }
    ```
    
    これは、パスパラメータ `item_id` が `int` ではない値 `"foo"` だからです。
    
    <a href="http://127.0.0.1:8000/items/4.2" class="external-link" target="_blank">http://127.0.0.1:8000/items/4.2</a> で見られるように、intのかわりに `float` が与えられた場合にも同様なエラーが表示されます。
    
    /// check | 確認
    
    したがって、Pythonの型宣言を使用することで、**FastAPI**はデータのバリデーションを行います。
    
    表示されたエラーには問題のある箇所が明確に指摘されていることに注意してください。
    
    これは、APIに関連するコードの開発およびデバッグに非常に役立ちます。
    
    ///
    
    ## ドキュメント
    
    Created: Sun Dec 28 07:19:09 GMT 2025
    - Last Modified: Mon Nov 18 02:25:44 GMT 2024
    - 10.4K bytes
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  2. docs/de/docs/python-types.md

    Diese **„Typhinweise“** oder -Annotationen sind eine spezielle Syntax, die es erlaubt, den <abbr title="zum Beispiel: str, int, float, bool">Typ</abbr> einer Variablen zu deklarieren.
    
    Durch das Deklarieren von Typen für Ihre Variablen können Editoren und Tools bessere Unterstützung bieten.
    
    Created: Sun Dec 28 07:19:09 GMT 2025
    - Last Modified: Wed Dec 17 20:41:43 GMT 2025
    - 17.9K bytes
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  3. docs/uk/docs/index.md

    ```Python hl_lines="4  9-12  25-27"
    from typing import Union
    
    from fastapi import FastAPI
    from pydantic import BaseModel
    
    app = FastAPI()
    
    
    class Item(BaseModel):
        name: str
        price: float
        is_offer: Union[bool, None] = None
    
    
    @app.get("/")
    def read_root():
        return {"Hello": "World"}
    
    
    @app.get("/items/{item_id}")
    def read_item(item_id: int, q: Union[str, None] = None):
    Created: Sun Dec 28 07:19:09 GMT 2025
    - Last Modified: Sat Oct 11 17:48:49 GMT 2025
    - 24.2K bytes
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  4. docs/de/docs/index.md

    ```Python hl_lines="4  9-12  25-27"
    from typing import Union
    
    from fastapi import FastAPI
    from pydantic import BaseModel
    
    app = FastAPI()
    
    
    class Item(BaseModel):
        name: str
        price: float
        is_offer: Union[bool, None] = None
    
    
    @app.get("/")
    def read_root():
        return {"Hello": "World"}
    
    
    @app.get("/items/{item_id}")
    def read_item(item_id: int, q: Union[str, None] = None):
    Created: Sun Dec 28 07:19:09 GMT 2025
    - Last Modified: Fri Dec 26 09:39:53 GMT 2025
    - 25.8K bytes
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  5. api/go1.6.txt

    pkg image/color, type NYCbCrA struct, A uint8
    pkg image/color, type NYCbCrA struct, embedded YCbCr
    pkg image/color, var NYCbCrAModel Model
    pkg math/big, method (*Float) MarshalText() ([]uint8, error)
    pkg math/big, method (*Float) UnmarshalText([]uint8) error
    pkg math/big, method (*Int) Append([]uint8, int) []uint8
    pkg math/big, method (*Int) Text(int) string
    pkg math/rand, func Read([]uint8) (int, error)
    Created: Tue Dec 30 11:13:12 GMT 2025
    - Last Modified: Wed Jan 13 23:40:13 GMT 2016
    - 12.9K bytes
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  6. impl/maven-cli/src/main/java/org/apache/maven/cling/invoker/LookupInvoker.java

            try {
                if (threadConfiguration.endsWith("C")) {
                    String str = threadConfiguration.substring(0, threadConfiguration.length() - 1);
                    float coreMultiplier = Float.parseFloat(str);
    
                    if (coreMultiplier <= 0.0f) {
                        throw new IllegalArgumentException("Invalid threads core multiplier value: '" + threadConfiguration
    Created: Sun Dec 28 03:35:09 GMT 2025
    - Last Modified: Tue Oct 28 13:01:07 GMT 2025
    - 43.2K bytes
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  7. README.md

    ```Python hl_lines="4  9-12  25-27"
    from typing import Union
    
    from fastapi import FastAPI
    from pydantic import BaseModel
    
    app = FastAPI()
    
    
    class Item(BaseModel):
        name: str
        price: float
        is_offer: Union[bool, None] = None
    
    
    @app.get("/")
    def read_root():
        return {"Hello": "World"}
    
    
    @app.get("/items/{item_id}")
    def read_item(item_id: int, q: Union[str, None] = None):
    Created: Sun Dec 28 07:19:09 GMT 2025
    - Last Modified: Thu Dec 25 11:01:37 GMT 2025
    - 26.4K bytes
    - Click Count (0)
  8. docs/ru/docs/index.md

    ```Python hl_lines="4  9-12  25-27"
    from typing import Union
    
    from fastapi import FastAPI
    from pydantic import BaseModel
    
    app = FastAPI()
    
    
    class Item(BaseModel):
        name: str
        price: float
        is_offer: Union[bool, None] = None
    
    
    @app.get("/")
    def read_root():
        return {"Hello": "World"}
    
    
    @app.get("/items/{item_id}")
    def read_item(item_id: int, q: Union[str, None] = None):
    Created: Sun Dec 28 07:19:09 GMT 2025
    - Last Modified: Thu Dec 11 21:25:03 GMT 2025
    - 32K bytes
    - Click Count (0)
  9. docs/en/docs/index.md

    ```Python hl_lines="4  9-12  25-27"
    from typing import Union
    
    from fastapi import FastAPI
    from pydantic import BaseModel
    
    app = FastAPI()
    
    
    class Item(BaseModel):
        name: str
        price: float
        is_offer: Union[bool, None] = None
    
    
    @app.get("/")
    def read_root():
        return {"Hello": "World"}
    
    
    @app.get("/items/{item_id}")
    def read_item(item_id: int, q: Union[str, None] = None):
    Created: Sun Dec 28 07:19:09 GMT 2025
    - Last Modified: Thu Dec 25 11:01:37 GMT 2025
    - 23.5K bytes
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  10. tests/test_application.py

                                "name": "item_id",
                                "in": "path",
                            }
                        ],
                    }
                },
                "/path/float/{item_id}": {
                    "get": {
                        "responses": {
                            "200": {
                                "description": "Successful Response",
    Created: Sun Dec 28 07:19:09 GMT 2025
    - Last Modified: Sat Dec 27 18:19:10 GMT 2025
    - 51.9K bytes
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