)
            else:
                return None
        if scheme.lower() != "bearer":
            if self.auto_error:
                raise HTTPException(
                    status_code=HTTP_403_FORBIDDEN,
                    detail="Invalid authentication credentials",
                )
            else:
                return None

                stacklevel=4,
            )
        current_json_schema_extra = json_schema_extra or extra
        if PYDANTIC_VERSION < "2.7.0":
            self.deprecated = deprecated
        else:
            kwargs["deprecated"] = deprecated
        if PYDANTIC_V2:
            kwargs.update(
                {
                    "annotation": annotation,
                    "alias_priority": alias_priority,

        if not authorization:
            if self.auto_error:
                raise HTTPException(
                    status_code=HTTP_403_FORBIDDEN, detail="Not authenticated"
                )
            else:
                return None
        return authorization


class OAuth2PasswordBearer(OAuth2):
    """
    OAuth2 flow for authentication using a bearer token obtained with a password.

                    "response_model_by_alias=False is basically a quick hack, to support "
                    "proper OpenAPI use another model with the correct field names"
                )
            }
        )
    else:

        class Config:
            schema_extra = {
                "description": (
                    "response_model_by_alias=False is basically a quick hack, to support "

### About `root_path`

Keep in mind that the server (Uvicorn) won't use that `root_path` for anything else than passing it to the app.

But if you go with your browser to <a href="http://127.0.0.1:8000" class="external-link" target="_blank">http://127.0.0.1:8000/app</a> you will see the normal response:

```JSON
{

        elif pr.state == "closed" or approved_label in label_strs:
            logging.info(f"Already approved or closed PR #{pr.number}")
            if already_done_comment:
                logging.info(
                    f"This PR #{pr.number} was already marked as done in comment: {already_done_comment.url}"
                )
            elif already_notified_comment:

    class Item(BaseModel):
        data: str

        if PYDANTIC_V2:
            model_config = ConfigDict(
                json_schema_extra={"example": {"data": "Data in schema_extra"}}
            )
        else:

            class Config:
                schema_extra = {"example": {"data": "Data in schema_extra"}}

    @app.post("/schema_extra/")
    def schema_extra(item: Item):
        return item

You never call those functions directly. They are called by your framework (in this case, **FastAPI**).

With the Dependency Injection system, you can also tell **FastAPI** that your *path operation function* also "depends" on something else that should be executed before your *path operation function*, and **FastAPI** will take care of executing it and "injecting" the results.

Other common terms for this same idea of "dependency injection" are:

* resources

                    });
                }
            } else {
                oauth2.callback({auth: oauth2.auth, token: qp, isValid: isValid, redirectUrl: redirectUrl});
            }
            window.close();
        }

        if (document.readyState !== 'loading') {
            run();
        } else {
            document.addEventListener('DOMContentLoaded', function () {

## Asynchronous Code

Asynchronous code just means that the language 💬 has a way to tell the computer / program 🤖 that at some point in the code, it 🤖 will have to wait for *something else* to finish somewhere else. Let's say that *something else* is called "slow-file" 📝.

So, during that time, the computer can go and do some other work, while "slow-file" 📝 finishes.