November 2025
Intermediate to advanced
1172 pages
46h 25m
Portuguese (Portugal, Brazil)
Content preview from Aprendendo Python (Portuguese Edition), 1st Edition
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Capítulo 10. Introdução às instruções Python
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Agora que você já conhece os objetos embutidos do Python, esse capítulo começa a explorar as formas básicas de instruções. Assim como na parte anterior, vamos começar com uma introdução geral à sintaxe das instruções e continuar com mais detalhes sobre instruções específicas nos próximos capítulos.
Em termos simples, instruções são o código que escrevemos para dizer ao Python o que nossos programas devem fazer. Se, como sugerido no Capítulo 4, os programas “fazem coisas com coisas”, então as instruções são a maneira como especificamos que tipo de coisas um programa faz. De forma menos informal, Python é uma linguagem procedural, baseada em instruções; combinando instruções, especificamos um procedimento que o Python executa para satisfazer os objetivos de um programa.
A hierarquia conceitual do Python revisitada
Outra maneira de entender o papel das instruções é revisitar a hierarquia conceitual apresentada no Capítulo 4, que falava sobre objetos embutidos e as expressões usadas para manipulá-los. Este capítulo sobe na hierarquia até o próximo nível da estrutura do programa Python:
Os programas são compostos por módulos.
Os módulos contêm instruções.
As instruções têm expressões.
As expressões criam e processam objetos.
Na sua base, os programas escritos na linguagem Python são compostos por instruções e expressões. ...
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