from fastapi import FastAPI

my_awesome_api = FastAPI()


@my_awesome_api.get("/")
async def root():

from fastapi import Depends, FastAPI
from fastapi.testclient import TestClient

app = FastAPI()


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


@app.get("/items/")
async def read_items(commons: dict = Depends(common_parameters)):
    return {"message": "Hello Items!", "params": commons}


@app.get("/users/")

from datetime import datetime, timedelta, timezone
from typing import Union

import jwt
from fastapi import Depends, FastAPI, HTTPException, status
from fastapi.security import OAuth2PasswordBearer, OAuth2PasswordRequestForm
from jwt.exceptions import InvalidTokenError
from passlib.context import CryptContext
from pydantic import BaseModel

# to get a string like this run:
# openssl rand -hex 32

from datetime import datetime, timedelta, timezone
from typing import Annotated

import jwt
from fastapi import Depends, FastAPI, HTTPException, status
from fastapi.security import OAuth2PasswordBearer, OAuth2PasswordRequestForm
from jwt.exceptions import InvalidTokenError
from passlib.context import CryptContext
from pydantic import BaseModel

# to get a string like this run:
# openssl rand -hex 32

from fastapi import FastAPI

app = FastAPI()


@app.get("/items/", include_in_schema=False)
async def read_items():

from typing import Union

from fastapi import Depends, FastAPI, HTTPException, Query
from sqlmodel import Field, Session, SQLModel, create_engine, select


class Hero(SQLModel, table=True):
    id: Union[int, None] = Field(default=None, primary_key=True)
    name: str = Field(index=True)
    age: Union[int, None] = Field(default=None, index=True)
    secret_name: str


sqlite_file_name = "database.db"

```Python
... = Depends(CommonQueryParams)
```

... **FastAPI**가 실제로 어떤 것이 의존성인지 알기 위해서 사용하는 방법입니다.
FastAPI는 선언된 매개변수들을 추출할 것이고 실제로 이 변수들을 호출할 것입니다.

---

이 경우에, 첫번째 `CommonQueryParams` 변수를 보면:

```Python
commons: CommonQueryParams ...
```

... **FastAPI**는 `CommonQueryParams` 변수에 어떠한 특별한 의미도 부여하지 않습니다. FastAPI는 이 변수를 데이터 변환, 검증 등에 활용하지 않습니다. (활용하려면 `= Depends(CommonQueryParams)`를 사용해야 합니다.)

# 在云上部署 FastAPI

您几乎可以使用**任何云服务商**来部署 FastAPI 应用程序。

在大多数情况下，主要的云服务商都有部署 FastAPI 的指南。

## 云服务商 - 赞助商

一些云服务商 ✨ [**赞助 FastAPI**](../help-fastapi.md#sponsor-the-author){.internal-link target=_blank} ✨，这确保了FastAPI 及其**生态系统**持续健康地**发展**。

这表明了他们对 FastAPI 及其**社区**（您）的真正承诺，因为他们不仅想为您提供**良好的服务**，而且还想确保您拥有一个**良好且健康的框架**：FastAPI。 🙇

您可能想尝试他们的服务并阅读他们的指南：

from fastapi import FastAPI

app = FastAPI()


@app.post("/items/", status_code=201)
async def create_item(name: str):

{"item_id":3}
```

/// check

Beachten Sie, dass der Wert, den Ihre Funktion erhält und zurückgibt, die Zahl `3` ist, also ein `int`. Nicht der String `"3"`, also ein `str`.

Sprich, mit dieser Typdeklaration wird **FastAPI** die Anfrage automatisch <abbr title="Den String, der von einer HTTP Anfrage kommt, in Python-Objekte konvertieren">„parsen“</abbr>.

///

## Datenvalidierung