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Python Web Development with Sanic

You're reading from   Python Web Development with Sanic An in-depth guide for Python web developers to improve the speed and scalability of web applications

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Product type Paperback
Published in Mar 2022
Publisher Packt
ISBN-13 9781801814416
Length 504 pages
Edition 1st Edition
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Authors (2):
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Stephen Sadowski Stephen Sadowski
Author Profile Icon Stephen Sadowski
Stephen Sadowski
Adam Hopkins Adam Hopkins
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Adam Hopkins
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Table of Contents (16) Chapters Close

Preface 1. Part 1:Getting Started with Sanic
2. Chapter 1: Introduction to Sanic and Async Frameworks FREE CHAPTER 3. Chapter 2: Organizing a Project 4. Part 2:Hands-On Sanic
5. Chapter 3: Routing and Intaking HTTP Requests 6. Chapter 4: Ingesting HTTP Data 7. Chapter 5: Building Response Handlers 8. Chapter 6: Operating Outside the Response Handler 9. Chapter 7: Dealing with Security Concerns 10. Chapter 8: Running a Sanic Server 11. Part 3:Putting It All together
12. Chapter 9: Best Practices to Improve Your Web Applications 13. Chapter 10: Implementing Common Use Cases with Sanic 14. Chapter 11: A Complete Real-World Example 15. Other Books You May Enjoy

Wiring it all up

As we have learned, creating a pragmatic directory structure leads to predictable and easy-to-navigate source code. Because it is predictable to us as developers, it is also predictable for computers to run. Perhaps we can use this to our advantage.

Earlier, we discussed one of the problems we often encounter when trying to expand our application from the single file structure: circular imports. We can solve this well with our blueprints, but it still leaves us wondering about what to do with things that we might want to attach at the application level (such as middleware, listeners, and signals). Let's take a look at those use cases now.

Controlled imports

It is generally preferred to break code up into modules using nested directories and files that help us both logically think about our code, but also navigate to it. This does not come without a cost. What happens when two modules are interdependent? This will cause a circular import exception, and...

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