#!/usr/bin/env bash

set -e

app = FastAPI()


def verify_password(plain_password, hashed_password):
    return pwd_context.verify(plain_password, hashed_password)


def get_password_hash(password):
    return pwd_context.hash(password)


def get_user(db, username: str):
    if username in db:
        user_dict = db[username]
        return UserInDB(**user_dict)

)

app = FastAPI()


def verify_password(plain_password, hashed_password):
    return pwd_context.verify(plain_password, hashed_password)


def get_password_hash(password):
    return pwd_context.hash(password)


def get_user(db, username: str):
    if username in db:
        user_dict = db[username]
        return UserInDB(**user_dict)

        run: |
          cd dist/fastapi-*/
          pip install -r requirements-tests.txt
      - name: Run source distribution tests
        run: |
          cd dist/fastapi-*/
          bash scripts/test.sh
      - name: Build wheel distribution
        run: |
          cd dist
          pip wheel --no-deps fastapi-*.tar.gz
      - name: Dump GitHub context
        env:

So, if the `dict` contains:

```Python
{
    "username": "johndoe",
    "hashed_password": "some_hash",
}
```

It will be passed to `UserInDB` as:

```Python
UserInDB(username="johndoe", hashed_password="some_hash")
```

## Create your **FastAPI** code

### Create the `FastAPI` app

```Python hl_lines="46"

#!/usr/bin/env bash

set -e
set -x

export PYTHONPATH=./docs_src

app = FastAPI()


def verify_password(plain_password, hashed_password):
    return pwd_context.verify(plain_password, hashed_password)


def get_password_hash(password):
    return pwd_context.hash(password)


def get_user(db, username: str):
    if username in db:
        user_dict = db[username]
        return UserInDB(**user_dict)

!!! danger "Gefahr"
    Speichern Sie niemals das Klartext-Passwort eines Benutzers. Speichern Sie immer den „sicheren Hash“, den Sie verifizieren können.

    Falls Ihnen das nichts sagt, in den [Sicherheits-Kapiteln](security/simple-oauth2.md#passwort-hashing){.internal-link target=_blank} werden Sie lernen, was ein „Passwort-Hash“ ist.

## Mehrere Modelle

例えば`dict`が下記のようになっていた場合:

```Python
{
    "username": "johndoe",
    "hashed_password": "some_hash",
}
```

`UserInDB`には次のように渡されます:

```Python
UserInDB(username="johndoe", hashed_password="some_hash")
```

## **FastAPI** コードの実装

### `FastAPI` app の作成

```Python hl_lines="46"
{!../../../docs_src/nosql_databases/tutorial001.py!}
```

    {!> ../../../docs_src/extra_models/tutorial005.py!}
    ```

## 小结

针对不同场景，可以随意使用不同的 Pydantic 模型继承定义的基类。