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Architecture Patterns with Python
face You may be wondering who we are and why we wrote this book. At the end of Harry’s last book, Test-Driven Development with Python (O’Reilly), he found himself asking a bunch of questions about architecture, such as, What’s the best way of structuring your application so that it’s easy to test? More specifically, so that your core business logic is covered by unit tests, and so that you minimize the number of integration and end-to-end tests you need? He made vague references to "Hexagonal Architecture" and "Ports and Adapters" and "Functional Core, Imperative Shell," but if he was honest, he’d have to admit that these weren’t things he really understood or had done in practice.
Along the way, things get broken or water damaged, storms cause unexpected delays, logistics partners mishandle goods, paperwork goes missing, customers change their minds and amend their orders, and so on. And this book isn’t a replacement for the classics in the field such as Eric Evans’s Domain-Driven Design or Martin Fowler’s Patterns of Enterprise Application Architecture(both published by Addison-Wesley Professional)—which we often refer to and encourage you to go and read. Gigantic thanks also to all our readers so far for their comments and suggestions: Ian Cooper, Abdullah Ariff, Jonathan Meier, Gil Gonçalves, Matthieu Choplin, Ben Judson, James Gregory, Łukasz Lechowicz, Clinton Roy, Vitorino Araújo, Susan Goodbody, Josh Harwood, Daniel Butler, Liu Haibin, Jimmy Davies, Ignacio Vergara Kausel, Gaia Canestrani, Renne Rocha, pedroabi, Ashia Zawaduk, Jostein Leira, Brandon Rhodes, Jazeps Basko, simkimsia, Adrien Brunet, Sergey Nosko, Dmitry Bychkov, and many more; our apologies if we missed you on this list.
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