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  2. github.com/tiangolo/fastapi

    tests/test_generic_parameterless_depends.py 

    from typing import TypeVar

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

app = FastAPI()

T = TypeVar("T")

Dep = Annotated[T, Depends()]


class A:
    pass


class B:
    pass


@app.get("/a")
async def a(dep: Dep[A]):
    return {"cls": dep.__class__.__name__}


@app.get("/b")
async def b(dep: Dep[B]):
    Registered: Sun Oct 27 07:19:11 UTC 2024
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  3. github.com/tiangolo/fastapi

    docs_src/sql_databases/tutorial002_an_py39.py 

    from typing import Annotated, Union

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


class HeroBase(SQLModel):
    name: str = Field(index=True)
    age: Union[int, None] = Field(default=None, index=True)


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


class HeroPublic(HeroBase):
    Registered: Sun Oct 27 07:19:11 UTC 2024
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  4. github.com/tiangolo/fastapi

    docs_src/websockets/tutorial002_an.py 

    from typing import Union

from fastapi import (
    Cookie,
    Depends,
    FastAPI,
    Query,
    WebSocket,
    WebSocketException,
    status,
)
from fastapi.responses import HTMLResponse
from typing_extensions import Annotated

app = FastAPI()

html = """
<!DOCTYPE html>
<html>
    <head>
        <title>Chat</title>
    </head>
    <body>
        <h1>WebSocket Chat</h1>
    Registered: Sun Oct 27 07:19:11 UTC 2024
    - Last Modified: Sat Mar 18 12:29:59 UTC 2023
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  5. github.com/tiangolo/fastapi

    docs_src/websockets/tutorial002_an_py39.py 

    from typing import Annotated, 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 Oct 27 07:19:11 UTC 2024
    - Last Modified: Sat Mar 18 12:29:59 UTC 2023
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    - Viewed (0)
  6. github.com/tiangolo/fastapi

    docs/en/docs/advanced/advanced-dependencies.md 

    And that way we are able to "parameterize" our dependency, that now has `"bar"` inside of it, as the attribute `checker.fixed_content`.

## Use the instance as a dependency

Then, we could use this `checker` in a `Depends(checker)`, instead of `Depends(FixedContentQueryChecker)`, because the dependency is the instance, `checker`, not the class itself.

And when solving the dependency, **FastAPI** will call this `checker` like:

```Python
    Registered: Sun Oct 27 07:19:11 UTC 2024
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  7. github.com/tiangolo/fastapi

    docs/en/docs/tutorial/security/get-current-user.md 

    ///

```Python hl_lines="19-22  26-27"
{!> ../../docs_src/security/tutorial002.py!}
```

////

## Inject the current user

So now we can use the same `Depends` with our `get_current_user` in the *path operation*:

//// tab | Python 3.10+

```Python hl_lines="31"
{!> ../../docs_src/security/tutorial002_an_py310.py!}
```

////

//// tab | Python 3.9+
    Registered: Sun Oct 27 07:19:11 UTC 2024
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  8. github.com/tiangolo/fastapi

    docs/de/docs/tutorial/dependencies/sub-dependencies.md 

    //// tab | Python 3.8+

```Python hl_lines="1"
async def needy_dependency(fresh_value: Annotated[str, Depends(get_value, use_cache=False)]):
    return {"fresh_value": fresh_value}
```

////

//// tab | Python 3.8+ nicht annotiert
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  9. github.com/tiangolo/fastapi

    tests/test_security_openid_connect.py 

    from fastapi import Depends, FastAPI, Security
from fastapi.security.open_id_connect_url import OpenIdConnect
from fastapi.testclient import TestClient
from pydantic import BaseModel

app = FastAPI()

oid = OpenIdConnect(openIdConnectUrl="/openid")


class User(BaseModel):
    username: str


def get_current_user(oauth_header: str = Security(oid)):
    user = User(username=oauth_header)
    return user
    Registered: Sun Oct 27 07:19:11 UTC 2024
    - Last Modified: Fri Jun 30 18:25:16 UTC 2023
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  10. github.com/tiangolo/fastapi

    tests/test_security_openid_connect_description.py 

    from fastapi import Depends, FastAPI, Security
from fastapi.security.open_id_connect_url import OpenIdConnect
from fastapi.testclient import TestClient
from pydantic import BaseModel

app = FastAPI()

oid = OpenIdConnect(
    openIdConnectUrl="/openid", description="OpenIdConnect security scheme"
)


class User(BaseModel):
    username: str


def get_current_user(oauth_header: str = Security(oid)):
    Registered: Sun Oct 27 07:19:11 UTC 2024
    - Last Modified: Fri Jun 30 18:25:16 UTC 2023
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  11. github.com/tiangolo/fastapi

    docs/em/docs/tutorial/dependencies/sub-dependencies.md 

    🏧 😐 🌐❔ 👆 💭 👆 đŸ’Ē 🔗 🤙 🔠 🔁 (🎲 💗 🕰) 🎏 📨 ↩ī¸ ⚙ī¸ "💾" 💲, 👆 đŸ’Ē ⚒ đŸ”ĸ `use_cache=False` 🕐❔ ⚙ī¸ `Depends`:

```Python hl_lines="1"
async def needy_dependency(fresh_value: str = Depends(get_value, use_cache=False)):
    return {"fresh_value": fresh_value}
```

## 🌃

↖ī¸ âšĒī¸âžĄī¸ 🌐 🎀 🔤 ⚙ī¸ đŸ“Ĩ, **🔗 💉** ⚙ī¸ 🙅.

đŸ”ĸ 👈 👀 🎏 *➡ 🛠ī¸ đŸ”ĸ*.
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