March 2025
Intermediate to advanced
1172 pages
47h 52m
Spanish
Content preview from Aprender Python, 6.ª edición
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Capítulo 31. Diseñar con clases
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Hasta ahora, en esta parte del libro, nos hemos centrado en el uso de la herramienta de POO de Python, la clase. Pero la programación orientada a objetos también tiene que ver con el diseño,es decir, con cómo utilizar las clases para modelar objetos útiles. Con este fin, este capítulo codifica patrones de diseño de programación orientada a objetos comunes en Python, como la herencia, la composición, la delegación y las fábricas. Por el camino, también investigaremos algunos conceptos de clase centrados en el diseño, como los atributos pseudoprivados, la herencia múltiple y los métodos vinculados. Dado que la herencia múltiple depende del orden de búsqueda MRO, también lo exploraremos aquí.
Una nota por adelantado: algunos de los términos de diseño mencionados aquí requieren más cobertura de la que puede proporcionar este libro. Si este material despierta tu curiosidad, quizá quieras considerar la posibilidad de explorar un texto sobre diseño OOP o patrones de diseño como siguiente paso. Como verás, la buena noticia es que Python hace que muchos patrones de diseño tradicionales sean casi triviales.
Python y POO
Empecemos con un repaso: la implementación de la POO en Python puede resumirse en tres ideas:
- Herencia
- La herencia se basa en la búsqueda de atributos en Python (en las expresiones
X.name). - Polimorfismo
- En
X.method, el significado ...
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