# Parámetros de Path

Puedes declarar "parámetros" o "variables" de path con la misma sintaxis que se usa en los format strings de Python:

{* ../../docs_src/path_params/tutorial001.py hl[6:7] *}

El valor del parámetro de path `item_id` se pasará a tu función como el argumento `item_id`.

Así que, si ejecutas este ejemplo y vas a <a href="http://127.0.0.1:8000/items/foo" class="external-link" target="_blank">http://127.0.0.1:8000/items/foo</a>, verás un response de:

    public Artifact find(Artifact artifact) {
        File artifactFile = new File(localRepository.getBasedir(), pathOf(artifact));

        // We need to set the file here or the resolver will fail with an NPE, not fully equipped to deal
        // with multiple local repository implementations yet.
        artifact.setFile(artifactFile);

        return artifact;
    }

    @Override
    public String getId() {

// formatMetaV1 should be inherited by backend format structs. Please look at format-fs.go
// and format-xl.go for details.

// Ideally we will never have a situation where we will have to change the
// fields of this struct and deal with related migration.
type formatMetaV1 struct {
	// Version of the format config.
	Version string `json:"version"`
	// Format indicates the backend format type, supports two values 'xl' and 'fs'.

The MIT License (MIT)

Copyright (c) 2013 Armon Dadgar

Permission is hereby granted, free of charge, to any person obtaining a copy of
this software and associated documentation files (the "Software"), to deal in
the Software without restriction, including without limitation the rights to
use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of

The MIT License (MIT)

Copyright (c) 2014 Cenk Altı

Permission is hereby granted, free of charge, to any person obtaining a copy of
this software and associated documentation files (the "Software"), to deal in
the Software without restriction, including without limitation the rights to
use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of

Copyright (c) 2016 Felix Geisendörfer (******@****.***)

 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
 in the Software without restriction, including without limitation the rights
 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 copies of the Software, and to permit persons to whom the Software is

Copyright (c) 2015 Conrad Irwin <******@****.***>

Copyright (c) 2012 Dave Grijalva
Copyright (c) 2021 golang-jwt maintainers

## Documentación de Descripción de Response - OpenAPI

Para definir la descripción del response, mostrada en la interfaz de usuario de la documentación, lee la documentación para [Tutorial - Configuraciones de Path Operation - Descripción del Response](../tutorial/path-operation-configuration.md#response-description){.internal-link target=_blank}.

Digamos que el archivo dedicado solo a manejar usuarios es el submódulo en `/app/routers/users.py`.

Quieres tener las *path operations* relacionadas con tus usuarios separadas del resto del código, para mantenerlo organizado.

Pero todavía es parte de la misma aplicación/web API de **FastAPI** (es parte del mismo "paquete de Python").

Puedes crear las *path operations* para ese módulo usando `APIRouter`.

### Importar `APIRouter`