#### Voir le `openapi.json` { #check-the-openapi-json }

Si vous êtes curieux de voir à quoi ressemble le schéma OpenAPI brut, FastAPI génère automatiquement un JSON (schéma) avec les descriptions de toute votre API.

Cela inclut `uvloop`, le remplaçant hautes performances de `asyncio`, qui fournit le gros gain de performance en matière de concurrence.

Lorsque vous installez FastAPI avec quelque chose comme `pip install "fastapi[standard]"`, vous obtenez déjà `uvicorn[standard]` aussi.

///

## Exécuter le programme serveur { #run-the-server-program }

            default_factory=default_factory,
            alias=alias,
            title=title,
            description=description,
            gt=gt,
            ge=ge,
            lt=lt,
            le=le,
            min_length=min_length,
            max_length=max_length,
            discriminator=discriminator,
            multiple_of=multiple_of,
            allow_inf_nan=allow_inf_nan,

    return item_id


@app.get("/path/param-le/{item_id}")
def get_path_param_le(item_id: float = Path(le=3)):
    return item_id


@app.get("/path/param-lt-gt/{item_id}")
def get_path_param_lt_gt(item_id: float = Path(lt=3, gt=1)):
    return item_id


@app.get("/path/param-le-ge/{item_id}")
def get_path_param_le_ge(item_id: float = Path(le=3, ge=1)):
    return item_id

S('TRUSTED_TYPES_POLICY configuration option must provide a "createHTML" hook.');if("function"!=typeof e.TRUSTED_TYPES_POLICY.createScriptURL)throw S('TRUSTED_TYPES_POLICY configuration option must provide a "createScriptURL" hook.');le=e.TRUSTED_TYPES_POLICY,ce=le.createHTML("")}else void 0===le&&(le=function(e,t){if("object"!=typeof e||"function"!=typeof e.createPolicy)return null;let n=null;const o="data-tt-policy-suffix";t&&t.hasAttribute(o)&&(n=t.getAttribute(o));const r="dompurify"+(n?"#"+n:"");try{return e...

        validation_alias=validation_alias,
        serialization_alias=serialization_alias,
        title=title,
        description=description,
        gt=gt,
        ge=ge,
        lt=lt,
        le=le,
        min_length=min_length,
        max_length=max_length,
        pattern=pattern,
        regex=regex,
        discriminator=discriminator,
        strict=strict,
        multiple_of=multiple_of,

                                "in": "path",
                            }
                        ],
                    }
                },
                "/path/param-le/{item_id}": {
                    "get": {
                        "responses": {
                            "200": {
                                "description": "Successful Response",

- autocompletion: autocomplétion

- the request (what the client sends to the server): la requête
- the response (what the server sends back to the client): la réponse

- the request body: le corps de la requête
- the response body: le corps de la réponse

- path operation: chemin d'accès
- path operations (plural): chemins d'accès
- path operation function: fonction de chemin d'accès

from typing import Annotated

from fastapi import FastAPI, Path

app = FastAPI()


@app.get("/items/{item_id}")
async def read_items(
    item_id: Annotated[int, Path(title="The ID of the item to get", gt=0, le=1000)],
    q: str,
):
    results = {"item_id": item_id}
    if q:
        results.update({"q": q})

{* ../../docs_src/path_params_numeric_validations/tutorial004_an_py310.py hl[10] *}

## 數值驗證：大於與小於或等於 { #number-validations-greater-than-and-less-than-or-equal }

同樣也適用於：

* `gt`：大於（`g`reater `t`han）
* `le`：小於或等於（`l`ess than or `e`qual）

{* ../../docs_src/path_params_numeric_validations/tutorial005_an_py310.py hl[10] *}

## 數值驗證：浮點數、大於與小於 { #number-validations-floats-greater-than-and-less-than }

數值驗證也適用於 `float`。