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Django Design Patterns and Best Practices

You're reading from   Django Design Patterns and Best Practices Industry-standard web development techniques and solutions using Python

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Product type Paperback
Published in May 2018
Publisher Packt
ISBN-13 9781788831345
Length 282 pages
Edition 2nd Edition
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Author (1):
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Arun Ravindran Arun Ravindran
Author Profile Icon Arun Ravindran
Arun Ravindran
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Table of Contents (16) Chapters Close

Preface 1. Django and Patterns 2. Application Design FREE CHAPTER 3. Models 4. Views and URLs 5. Templates 6. Admin Interface 7. Forms 8. Working Asynchronously 9. Creating APIs 10. Dealing with Legacy Code 11. Testing and Debugging 12. Security 13. Production-Ready 14. Python 2 Versus Python 3 15. Other Books You May Enjoy

Debugging


Despite the most rigorous testing, the sad reality is that we still have to deal with bugs. Django tries its best to be as helpful as possible while reporting an error to help you in debugging. However, it takes a lot of skill to identify the root cause of the problem.

Thankfully, with the right set of tools and techniques, we can not only identify the bugs but also gain great insight into the runtime behavior of your code. Let's take a look at some of these tools.

Django debug page

If you have encountered any exception in development, that is, when DEBUG=True, you would have already seen an error page similar to the following screenshot:

Typical Django error page when your DEBUG setting is turned on

Since it comes up so frequently, most developers tend to miss the wealth of information in this page. Here are some places to take a look at:

  • Exception details: Obviously, you need to read what the exception tells you very carefully.
  • Exception location: This is where Python thinks where the...
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