Doc(
                """
                A dictionary with overrides for the dependencies.

                Each key is the original dependency callable, and the value is the
                actual dependency that should be called.

                This is for testing, to replace expensive dependencies with testing
                versions.

                Read more about it in the

   ({{{./maven-core/xref/org/apache/maven/model/plugin/DefaultLifecycleBindingsInjector.html}source}})

   ** dependency management import (for dependencies of type <<<pom>>> and scope <<<import>>> in the <<<\<dependencyManagement\>>>> section)

   ** dependency management injection: <<<DependencyManagementInjector>>> ({{{./apidocs/org/apache/maven/model/management/DependencyManagementInjector.html}javadoc}}),

/**
 * Specific problems during resolution that we want to account for:
 * <ul>
 *   <li>missing metadata</li>
 *   <li>version range violations</li>
 *   <li>version circular dependencies</li>
 *   <li>missing artifacts</li>
 *   <li>network/transfer errors</li>
 *   <li>file system errors: permissions</li>
 * </ul>
 *

## Dependencies { #dependencies }

FastAPI depends on Pydantic and Starlette.

### `standard` Dependencies { #standard-dependencies }

When you install FastAPI with `pip install "fastapi[standard]"` it comes with the `standard` group of optional dependencies:

Used by Pydantic:

{* ../../docs_src/sql_databases/tutorial001_an_py310.py ln[21:22] hl[21:22] *}

### Create a Session Dependency { #create-a-session-dependency }

A **`Session`** is what stores the **objects in memory** and keeps track of any changes needed in the data, then it **uses the `engine`** to communicate with the database.

pydantic>=2.7.0,<3.0.0
```

Y normalmente instalarías esas dependencias de los paquetes con `pip`, por ejemplo:

<div class="termy">

```console
$ pip install -r requirements.txt
---> 100%
Successfully installed fastapi pydantic
```

</div>

/// info | Información

Existen otros formatos y herramientas para definir e instalar dependencias de paquetes.

///

                if dependencies:
                    current_dependencies.extend(dependencies)
                if route.dependencies:
                    current_dependencies.extend(route.dependencies)
                self.add_api_websocket_route(
                    prefix + route.path,
                    route.endpoint,
                    dependencies=current_dependencies,

### Without `fastapi-cloud-cli`

If you want to install FastAPI with the standard dependencies but without the `fastapi-cloud-cli`, you can install with `pip install "fastapi[standard-no-fastapi-cloud-cli]"`.

### Additional Optional Dependencies

There are some additional dependencies you might want to install.

Additional optional Pydantic dependencies:

    "crossVersionTests": false
  },
  {
    "name": "dependency-management",
    "path": "platforms/software/dependency-management",
    "unitTests": true,
    "functionalTests": true,
    "crossVersionTests": true
  },
  {
    "name": "dependency-management-serialization-codecs",
    "path": "platforms/core-configuration/dependency-management-serialization-codecs",
    "unitTests": false,

///

**FastAPI**는 `fastapi.security.oauth2`에 이러한 모든 OAuth2 인증 플로우를 위한 유틸리티를 포함합니다.

## 데코레이터 `dependencies`에서의 `Security` { #security-in-decorator-dependencies }