September 2024
Intermediate to advanced
1648 pages
52h 56m
Spanish
Content preview from Aprender Python, 5ª EdiciónBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.
Capítulo 17. Ámbitos
Este trabajo se ha traducido utilizando IA. Agradecemos tus opiniones y comentarios: translation-feedback@oreilly.com
El Capítulo 16 introdujo las definiciones y llamadas a funciones básicas. Como vimos, el modelo básico de funciones de Python es sencillo de utilizar, pero incluso los ejemplos de funciones sencillas nos llevaron rápidamente a plantearnos preguntas sobre el significado de las variables en nuestro código. Este capítulo presenta los detalles de los ámbitos dePython , loslugares donde se definen y consultan las variables. Al igual que los archivos de módulos, los ámbitos ayudan a evitar conflictos de nombres en el código de tu programa: los nombres definidos en una unidad del programa no interfieren con los nombres de otra.
Como veremos, el lugar donde se asigna un nombre en nuestro código es crucial para determinar lo que significa el nombre. También descubriremos que el uso de ámbitos puede tener un gran impacto en el esfuerzo de mantenimiento del programa; el uso excesivo de globales, por ejemplo, es algo generalmente malo. En el lado positivo, aprenderemos que los ámbitos pueden proporcionar una forma de conservar la información de estado entre llamadas a funciones, y ofrecen una alternativa a las clases en algunas funciones.
Conceptos básicos de Python Scope
Ahora que ya estás preparado para empezar a escribir tus propias funciones, tenemos que formalizar un poco más lo que significan los nombres en Python. Cuando utilizas un nombre en un programa, ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access
More than 5,000 organizations count on O’Reilly
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.