## 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:

        assertTrue(DcerpcError.DCERPC_FAULT_CANT_PERFORM >= 0 && DcerpcError.DCERPC_FAULT_CANT_PERFORM <= 0x0000FFFF,
                "DCERPC_FAULT_CANT_PERFORM should be in standard range");
        assertTrue(DcerpcError.DCERPC_FAULT_NDR >= 0 && DcerpcError.DCERPC_FAULT_NDR <= 0x0000FFFF,
                "DCERPC_FAULT_NDR should be in standard range");

        this.notificationFilter = notificationFilter;
    }

    /**
     * Get the standard lease size for encoding/decoding
     * @return the standard lease context size
     */
    protected int getStandardLeaseSize() {
        // Standard lease V2 size: LeaseKey(16) + LeaseState(4) + Flags(4) + reserved fields
        return 32;
    }

    @Override

<div class="termy">

```console
$ pip install "fastapi[standard]"

---> 100%
```

</div>

/// note

package cmd

import "net/http"

// Standard cross domain policy information located at https://s3.amazonaws.com/crossdomain.xml
const crossDomainXML = `<?xml version="1.0"?><!DOCTYPE cross-domain-policy SYSTEM "http://www.adobe.com/xml/dtds/cross-domain-policy.dtd"><cross-domain-policy><allow-access-from domain="*" secure="false" /></cross-domain-policy>`

// Standard path where an app would find cross domain policy information.

        }
    }

    @Nested
    @DisplayName("SmbQueryFileStandardInfo Tests")
    class SmbQueryFileStandardInfoTests {

        @Test
        @DisplayName("Should create and access standard info")
        void testStandardInfoCreation() {
            Trans2QueryPathInformationResponse.SmbQueryFileStandardInfo standardInfo = response.new SmbQueryFileStandardInfo();

            assertNotNull(standardInfo);

Por ejemplo, para instalar Uvicorn:

<div class="termy">

```console
$ pip install "uvicorn[standard]"

---> 100%
```

</div>

Un proceso similar se aplicaría a cualquier otro programa de servidor ASGI.

/// tip | Consejo

Al añadir `standard`, Uvicorn instalará y usará algunas dependencias adicionales recomendadas.

For example, to install Uvicorn:

<div class="termy">

```console
$ pip install "uvicorn[standard]"

---> 100%
```

</div>

A similar process would apply to any other ASGI server program.

/// tip

By adding the `standard`, Uvicorn will install and use some recommended extra dependencies.

copies of a package at different versions if the package is
imported normally and vendored by the standard library.

Vendored packages are internally renamed with a "vendor/" prefix
to preserve the invariant that all packages have distinct paths.
This is necessary to avoid compiler and linker conflicts. Adding
a "vendor/" prefix also maintains the invariant that standard
library packages begin with a dotless path element.

## Afhankelijkheden

FastAPI maakt gebruik van Pydantic en Starlette.

### `standard` Afhankelijkheden

Wanneer je FastAPI installeert met `pip install "fastapi[standard]"`, worden de volgende `standard` optionele afhankelijkheden geïnstalleerd:

Gebruikt door Pydantic: