Muitos Exercícios são retirados da playlist do Gustavo Guanabara
https://www.youtube.com/watch?v=ElRd0cbXIv4&list=PLvE-ZAFRgX8hnECDn1v9HNTI71veL3oW0&index=6
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Para ver o "PEP 8 - Zen do Python", pode-se digitar
>> import this
Para entender ele, pode-se ver o "Zen do Python comentado"
https://medium.com/internet-das-coisas/o-zen-do-phyton-235d6aab0b94
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Uma coisa legal é ver o "PEP 8 - Guia de Estilo Para Python"