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tests/test_dependency_paramless.py

from typing import Annotated, Union

from fastapi import FastAPI, HTTPException, Security
from fastapi.security import (
    OAuth2PasswordBearer,
    SecurityScopes,
)
from fastapi.testclient import TestClient

app = FastAPI()

oauth2_scheme = OAuth2PasswordBearer(tokenUrl="token")


def process_auth(
    credentials: Annotated[Union[str, None], Security(oauth2_scheme)],
    security_scopes: SecurityScopes,
):

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

- Last Modified: Wed Dec 17 21:25:59 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

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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

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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

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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

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github.com/tiangolo/fastapi

docs_src/security/tutorial002_py310.py

from fastapi import Depends, FastAPI
from fastapi.security import OAuth2PasswordBearer
from pydantic import BaseModel

app = FastAPI()

oauth2_scheme = OAuth2PasswordBearer(tokenUrl="token")


class User(BaseModel):
    username: str
    email: str | None = None
    full_name: str | None = None
    disabled: bool | None = None


def fake_decode_token(token):
    return User(

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

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github.com/tiangolo/fastapi

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

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github.com/tiangolo/fastapi

docs_src/websockets/tutorial002_py39.py

from typing import Union

from fastapi import (
    Cookie,
    Depends,
    FastAPI,
    Query,
    WebSocket,
    WebSocketException,
    status,
)
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)">

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

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