from fastapi import Body, FastAPI
from pydantic import BaseModel

app = FastAPI()


class Item(BaseModel):
    name: str
    description: Union[str, None] = None
    price: float
    tax: Union[float, None] = None


@app.put("/items/{item_id}")
async def update_item(
    *,
    item_id: int,
    item: Item = Body(
        openapi_examples={
            "normal": {
                "summary": "A normal example",

## Escribiendo plantillas { #writing-templates }

Luego puedes escribir una plantilla en `templates/item.html` con, por ejemplo:

```jinja hl_lines="7"
{!../../docs_src/templates/templates/item.html!}
```

### Valores de Contexto de la Plantilla { #template-context-values }

En el HTML que contiene:

{% raw %}

```jinja
Item ID: {{ id }}
```

{% endraw %}

                if ((getFlags() & NTLMSSP_NEGOTIATE_SIGN) == NTLMSSP_NEGOTIATE_SIGN) {
                    final byte[] sessionNonce = new byte[16];
                    System.arraycopy(type2.getChallenge(), 0, sessionNonce, 0, 8);
                    System.arraycopy(clientChallenge, 0, sessionNonce, 8, 8);

                    final MD4 md4 = new MD4();
                    md4.update(responseKeyNT);

                    },
                    "summary": "Create an item",
                    "description": "Create an item with all the information:\n\n- **name**: each item must have a name\n- **description**: a long description\n- **price**: required\n- **tax**: if the item doesn't have tax, you can omit this\n- **tags**: a set of unique tag strings for this item",
                    "operationId": "create_item_items__post",

                },
                "post": {
                    "summary": "Create Item",
                    "operationId": "create_item_items__post",
                    "requestBody": {
                        "content": {
                            "application/json": {
                                "schema": {"$ref": "#/components/schemas/Item"}
                            }
                        },

                            }
                        },
                        "required": True,
                    },
                },
            }
        },
        "components": {
            "schemas": {
                "Item": {
                    "type": "object",
                    "title": "Item",
                    "properties": {

                        },
                    },
                    "summary": "Create Item",
                    "operationId": "create_item_items__post",
                    "requestBody": {
                        "content": {
                            "application/json": {
                                "schema": {"$ref": "#/components/schemas/Item"}
                            }
                        },

        // Set error code to 0
        setErrorCode(response, 0);

        // Copy valid descriptor data to the offset position
        byte[] validData = createValidSecurityDescriptorBuffer();
        System.arraycopy(validData, 0, buffer, offset, validData.length);

        int result = response.readDataWireFormat(buffer, offset, buffer.length - offset);

        assertTrue(result > 0);

         *
         * @param channelId channel identifier
         */
        public FailoverState(String channelId) {
            this.channelId = channelId;
            this.failureTime = System.currentTimeMillis();
            this.retryCount = 0;
            this.nextRetryTime = failureTime + 1000; // Initial 1 second delay
        }

        /**
         * Get channel ID
         *

 * <tr><td><code>*</code></td>                 <td></td>               <td>user properties</td></tr>
 * <tr><td><code>*</code></td>                 <td></td>               <td>system properties</td></tr>
 * <tr><td><code>*</code></td>                 <td></td>               <td>project properties</td></tr>
 * </table>
 *
 * @see Session
 * @see Project
 * @see org.apache.maven.api.settings.Settings