August 2024
Intermediate to advanced
1014 pages
26h
Spanish
Content preview from Python fluido, 2ª edición
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Capítulo 11. Un objeto pitónico
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Para que una biblioteca o marco de trabajo sea pitónico, debe hacer que a un programador de Python le resulte lo más fácil y natural posible aprender a realizar una tarea.
Martijn Faassen, creador de los frameworks Python y JavaScript.1
Gracias al Modelo de Datos de Python, tus tipos definidos por el usuario pueden comportarse con la misma naturalidad que los tipos incorporados. Y esto puede lograrse sin herencia, en el espíritu de la tipificación pato: sólo tienes que implementar los métodos necesarios para que tus objetos se comporten como se espera de ellos.
En capítulos anteriores, hemos estudiado el comportamiento de muchos objetos incorporados. Ahora construiremos clases definidas por el usuario que se comporten como verdaderos objetos de Python. Las clases de tu aplicación probablemente no necesiten ni deban implementar tantos métodos especiales como los ejemplos de este capítulo. Pero si estás escribiendo una biblioteca o un framework, los programadores que utilizarán tus clases pueden esperar que se comporten como las clases que proporciona Python. Cumplir esa expectativa es una forma de ser "pitónico".
Este capítulo comienza donde terminó el Capítulo 1, mostrando cómo implementar varios métodos especiales que suelen verse en objetos Python de muchos tipos diferentes.
En este capítulo veremos cómo hacerlo:
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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.