September 2024
Intermediate to advanced
738 pages
23h 26m
Spanish
book
Python en una cáscara de nuez, 4ª edición
by Alex Martelli, Anna Martelli Ravenscroft, Steve Holden, Paul McGuire
Content preview from Python en una cáscara de nuez, 4ª edición
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Capítulo 14. Personalizar la ejecución
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Python expone, soporta y documenta muchos de sus mecanismos internos. Esto puede ayudarte a entender Python a un nivel avanzado, y te permite enganchar tu propio código a dichos mecanismos de Python, controlándolos hasta cierto punto. Por ejemplo, "Python built-ins" cubre la forma en que Python dispone que los "built-ins" sean visibles. Este capítulo cubre algunas otras técnicas avanzadas de Python, como la personalización del sitio, las funciones de terminación, la ejecución dinámica, el manejo de tipos internos y la recolección de basura. Veremos otros temas relacionados con el control de la ejecución mediante múltiples hilos y procesos en el Capítulo 15; el Capítulo 17 cubre temas específicos de las pruebas, la depuración y la creación de perfiles.
Personalización por sitio
Python proporciona un "gancho" específico para permitir que cada sitio personalice algunos aspectos del comportamiento de Python al inicio de cada ejecución. Python carga el módulo estándar site justo antes del script principal. Si Python se ejecuta con la opción -S, no carga site. -S permite un arranque más rápido, pero carga al script principal con las tareas de inicialización. Las tareas de siteson, principalmente, poner sys . path en forma estándar (rutas absolutas, sin duplicados), incluyendo lo indicado por las variables de entorno, por los entornos ...
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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.