March 2025
Intermediate to advanced
1172 pages
47h 52m
Spanish
Content preview from Aprender Python, 6.ª edición
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,
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 33. Conceptos básicos sobre excepciones
Este trabajo se ha traducido utilizando IA. Agradecemos tus opiniones y comentarios: translation-feedback@oreilly.com
Esta parte del libro trata de las excepciones: eventosque señalan condiciones y modifican el flujo de control a través de un programa. En Python, las excepciones se activan automáticamente en caso de error, y pueden ser activadas e interceptadas por tu código. Se procesan mediante cuatro sentencias que estudiaremos aquí, la primera de las cuales viene en varios sabores que se califican como formas de sentencia diferentes según algunas medidas:
try/except/else/finally- Atrapar y recuperarse de las excepciones planteadas por Python, o por ti
raise- Activa una excepción manualmente en tu código
assert- Activa condicionalmente una excepción en tu código
with- Utiliza gestores de contexto que automaticen la gestión de excepciones
Ya nos hemos encontrado brevemente con algunas de ellas, pero la cobertura completa de este tema se guardó hasta el final de la parte principal de este libro porque necesitas conocer las clases para codificar excepciones propias. Aun así, salvo algunas excepciones (valga el juego de palabras), verás que el manejo de excepciones es sencillo en Python porque está integrado en el propio lenguaje como otra herramienta de alto nivel. Pero antes de profundizar en el "cómo", aclaremos el "por qué".
¿Por qué utilizar excepciones?
En pocas palabras, las excepciones nos permiten saltar de trozos arbitrariamente ...
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.