April 2025
Intermediate to advanced
380 pages
10h 16m
Portuguese (Portugal, Brazil)
Content preview from Python robusto
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Capítulo 20. Análise estática
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Antes de falar sobre testes, quero primeiro falar sobre análise estática. A análise estática é um conjunto de ferramentas que inspecciona a tua base de código, procurando potenciais erros ou inconsistências. É um grande recurso para encontrar erros comuns. Na verdade, já estiveste a trabalhar com uma ferramenta de análise estática: mypy. O mypy (e outros typecheckers) inspecciona a tua base de código e encontra erros de digitação. Outras ferramentas de análise estática verificam outros tipos de erros. Neste capítulo, vou guiar-te através de analisadores estáticos comuns para linting, verificação de complexidade e verificação de segurança.
Linting
A primeira classe de ferramentas de análise estática que te vou apresentar chama-se linter. Os linter procuram erros de programação comuns e violações de estilo na tua base de código. O seu nome vem do linter original: um programa chamado lint que costumava verificar os programas C em busca de erros comuns. Procura por lógica "fuzzy" e tenta remover essa fuzz (daí o nome linting). Em Python, o linter mais comum com que te vais deparar é o Pylint. O Pylint é usado para verificar uma miríade de erros comuns:
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Certas violações de estilo do guia de estilo PEP 8 Python
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Código morto que é inacessível (como o código após uma declaração de retorno)
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Violações de restrições de acesso (como membros ...
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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.