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 36. Exceções diversas
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Este capítulo encerra esta parte do livro com a habitual coleção de tópicos diversos, exemplos de uso comum e conceitos de design, seguidos pelas armadilhas e exercícios desta parte. Como este capítulo também encerra a parte fundamental do livro como um todo, ele inclui uma breve visão geral dos conceitos e ferramentas de desenvolvimento para ajudar na transição de iniciante na linguagem Python para desenvolvedor de aplicativos Python.
Manipuladores de exceção aninhados
A maioria dos nossos exemplos até agora usou apenas um único manipulador de exceção ( try ) para capturar exceções, mas o que acontece se um manipulador de exceção ( try ) estiver fisicamente aninhado dentro de outro? Nesse caso, o que significa se um manipulador de exceção ( try ) chamar uma função que executa outro manipulador de exceção ( try)? Tecnicamente, as instruções de manipulação de exceção ( try ) podem ser aninhadas em termos de sintaxe e fluxo de controle de tempo de execução através do seu código. Isso foi mencionado brevemente anteriormente, mas merece esclarecimento aqui.
Ambos os casos podem ser compreendidos se você perceber que o Python empilha instruções try em tempo de execução. Quando uma exceção é levantada, o Python retorna à instrução try inserida mais recentemente com uma cláusula except correspondente. Como cada instrução try deixa um ...
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