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docs_src/body_fields/tutorial001_an_py39.py

from typing import Annotated, Union

from fastapi import Body, FastAPI
from pydantic import BaseModel, Field

app = FastAPI()


class Item(BaseModel):
    name: str
    description: Union[str, None] = Field(
        default=None, title="The description of the item", max_length=300
    )
    price: float = Field(gt=0, description="The price must be greater than zero")
    tax: Union[float, None] = None


@app.put("/items/{item_id}")

Registered: Sun Dec 28 07:19:09 UTC 2025

- Last Modified: Sat Mar 18 12:29:59 UTC 2023

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github.com/tiangolo/fastapi

docs_src/websockets/tutorial001_py39.py

from fastapi import FastAPI, WebSocket
from fastapi.responses import HTMLResponse

app = FastAPI()

html = """
<!DOCTYPE html>
<html>
    <head>
        <title>Chat</title>
    </head>
    <body>
        <h1>WebSocket Chat</h1>
        <form action="" onsubmit="sendMessage(event)">
            <input type="text" id="messageText" autocomplete="off"/>
            <button>Send</button>
        </form>
        <ul id='messages'>

Registered: Sun Dec 28 07:19:09 UTC 2025

- Last Modified: Wed Dec 17 20:41:43 UTC 2025

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github.com/google/guava

android/guava/src/com/google/common/collect/MapDifference.java

   * equal.
   */
  boolean areEqual();

  /**
   * Returns an unmodifiable map containing the entries from the left map whose keys are not present
   * in the right map.
   */
  Map<K, V> entriesOnlyOnLeft();

  /**
   * Returns an unmodifiable map containing the entries from the right map whose keys are not
   * present in the left map.
   */
  Map<K, V> entriesOnlyOnRight();

  /**

Registered: Fri Dec 26 12:43:10 UTC 2025

- Last Modified: Mon Mar 17 20:26:29 UTC 2025

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github.com/apache/maven

compat/maven-compat/src/test/java/org/apache/maven/project/inheritance/t10/ProjectInheritanceTest.java

 * 3. Direct dependencies should inherit scope from dependencyManagement when
 *    they do not explicitly state a scope.
 *
 */
@Deprecated
@SuppressWarnings("checkstyle:UnusedLocalVariable")
class ProjectInheritanceTest extends AbstractProjectInheritanceTestCase {
    // ----------------------------------------------------------------------
    //
    // p1 inherits from p0
    // p0 inherits from super model
    //

Registered: Sun Dec 28 03:35:09 UTC 2025

- Last Modified: Wed Jul 23 17:27:08 UTC 2025

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github.com/tiangolo/fastapi

docs_src/response_model/tutorial001_01_py310.py

from fastapi import FastAPI
from pydantic import BaseModel

app = FastAPI()


class Item(BaseModel):
    name: str
    description: str | None = None
    price: float
    tax: float | None = None
    tags: list[str] = []


@app.post("/items/")
async def create_item(item: Item) -> Item:
    return item


@app.get("/items/")
async def read_items() -> list[Item]:
    return [

Registered: Sun Dec 28 07:19:09 UTC 2025

- Last Modified: Sat Jan 07 13:45:48 UTC 2023

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github.com/tiangolo/fastapi

docs_src/schema_extra_example/tutorial001_py310.py

from fastapi import FastAPI
from pydantic import BaseModel

app = FastAPI()


class Item(BaseModel):
    name: str
    description: str | None = None
    price: float
    tax: float | None = None

    model_config = {
        "json_schema_extra": {
            "examples": [
                {
                    "name": "Foo",
                    "description": "A very nice Item",
                    "price": 35.4,

Registered: Sun Dec 28 07:19:09 UTC 2025

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github.com/tiangolo/fastapi

docs_src/dependencies/tutorial001_02_an_py310.py

from typing import Annotated

from fastapi import Depends, FastAPI

app = FastAPI()


async def common_parameters(q: str | None = None, skip: int = 0, limit: int = 100):
    return {"q": q, "skip": skip, "limit": limit}


CommonsDep = Annotated[dict, Depends(common_parameters)]


@app.get("/items/")
async def read_items(commons: CommonsDep):
    return commons


@app.get("/users/")

Registered: Sun Dec 28 07:19:09 UTC 2025

- Last Modified: Sat Mar 18 12:29:59 UTC 2023

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github.com/tiangolo/fastapi

docs_src/query_params_str_validations/tutorial008_py39.py

from typing import Union

from fastapi import FastAPI, Query

app = FastAPI()


@app.get("/items/")
async def read_items(
    q: Union[str, None] = Query(
        default=None,
        title="Query string",
        description="Query string for the items to search in the database that have a good match",
        min_length=3,
    ),
):
    results = {"items": [{"item_id": "Foo"}, {"item_id": "Bar"}]}
    if q:

Registered: Sun Dec 28 07:19:09 UTC 2025

- Last Modified: Wed Dec 17 20:41:43 UTC 2025

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github.com/tiangolo/fastapi

tests/test_tutorial/test_middleware/test_tutorial001.py

from fastapi.testclient import TestClient

from docs_src.middleware.tutorial001_py39 import app

client = TestClient(app)


def test_response_headers():
    response = client.get("/openapi.json")
    assert response.status_code == 200, response.text
    assert "X-Process-Time" in response.headers


def test_openapi_schema():
    response = client.get("/openapi.json")
    assert response.status_code == 200, response.text

Registered: Sun Dec 28 07:19:09 UTC 2025

- Last Modified: Fri Dec 26 10:43:02 UTC 2025

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github.com/tiangolo/fastapi

docs_src/body_updates/tutorial001_py310.py

from fastapi import FastAPI
from fastapi.encoders import jsonable_encoder
from pydantic import BaseModel

app = FastAPI()


class Item(BaseModel):
    name: str | None = None
    description: str | None = None
    price: float | None = None
    tax: float = 10.5
    tags: list[str] = []


items = {
    "foo": {"name": "Foo", "price": 50.2},
    "bar": {"name": "Bar", "description": "The bartenders", "price": 62, "tax": 20.2},

Registered: Sun Dec 28 07:19:09 UTC 2025

- Last Modified: Fri Jan 07 14:11:31 UTC 2022

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