September 2025
Intermediate to advanced
660 pages
13h 38m
Portuguese (Portugal, Brazil)
Content preview from Introdução ao Python, 3rd Edition
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Capítulo 24. A Web
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Oh, que teia emaranhada nós tecemos...
Walter Scott, "Marmion"
Na fronteira entre a França e a Suíça está a Organização Europeia para Pesquisa Nuclear (CERN) - um instituto de pesquisa de física de partículas que esmaga átomos várias vezes, só para garantir. Em 1989, o cientista inglês Tim Berners-Lee circulou pela primeira vez uma proposta dentro do CERN para ajudar a disseminar informações lá e em toda a comunidade de pesquisa. Ele a chamou de World Wide Web e destilou seu design em três ideias simples:
- Protocolo de transferência de hipertexto (HTTP)
-
Um protocolo para clientes e servidores da Web trocarem solicitações e respostas
- Linguagem de marcação de hipertexto (HTML)
-
Um formato de apresentação para os resultados
- Localizador uniforme de recursos (URL)
-
Uma maneira de representar exclusivamente um servidor e um recurso nesse servidor
Em seu uso mais simples, um cliente da Web (Berners-Lee foi o primeiro a usar o termonavegador) se conectava a um servidor da Web com HTTP, solicitava um URL e recebia HTML. Tudo isso foi construído sobre a base de rede da Internet, que na época não era comercial e era conhecida apenas por algumas universidades e organizações de pesquisa.
Ele escreveu o primeiro navegador e servidor da Web em um computador NeXT.1 O conhecimento da Web realmente se expandiu em 1993, quando um grupo de estudantes da ...
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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.