March 2025
Intermediate to advanced
352 pages
9h 37m
Spanish
Content preview from Web Scraping con Python, 3.ª edición
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Capítulo 1. Cómo funciona Internet
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He conocido a muy pocas personas en mi vida que sepan realmente cómo funciona Internet, y desde luego yo no soy una de ellas.
La inmensa mayoría de nosotros nos conformamos con un conjunto de abstracciones mentales que nos permiten utilizar Internet tanto como necesitamos. Incluso para los programadores, estas abstracciones pueden extenderse sólo hasta donde les haya sido necesario para resolver un problema especialmente complicado una vez en su carrera.
Debido a las limitaciones en el número de páginas y a los conocimientos del autor, este capítulo también debe basarse en este tipo de abstracciones. Describe la mecánica de Internet y de las aplicaciones web, en la medida necesaria para raspar la web (y luego, quizás un poco más).
En cierto sentido, este capítulo describe el mundo en el que operan los raspadores web: las costumbres, prácticas, protocolos y normas que se volverán a visitar a lo largo del libro.
Cuando escribes una URL en la barra de direcciones de tu navegador y pulsas Intro, aparecen como por arte de magia texto, imágenes y medios interactivos. Esta misma magia les ocurre a miles de millones de personas cada día. Visitan los mismos sitios web, utilizan las mismas aplicaciones y, a menudo, obtienen medios y texto personalizados para ellos.
Y estos miles de millones de personas utilizan diferentes tipos de dispositivos ...
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