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Flask Framework Cookbook

You're reading from   Flask Framework Cookbook Over 80 proven recipes and techniques for Python web development with Flask

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Product type Paperback
Published in Jul 2019
Publisher
ISBN-13 9781789951295
Length 302 pages
Edition 2nd Edition
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Author (1):
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Shalabh Aggarwal Shalabh Aggarwal
Author Profile Icon Shalabh Aggarwal
Shalabh Aggarwal
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Toc

Table of Contents (15) Chapters Close

Preface 1. Flask Configurations 2. Templating with Jinja2 FREE CHAPTER 3. Data Modeling in Flask 4. Working with Views 5. Webforms with WTForms 6. Authenticating in Flask 7. RESTful API Building 8. Admin Interface for Flask Apps 9. Internationalization and Localization 10. Debugging, Error Handling, and Testing 11. Deployment and Post-Deployment 12. Microservices and Containers 13. Other Tips and Tricks 14. Other Books You May Enjoy

Creating custom 404 and 500 handlers

Every application throws errors to users at some point in time. These errors can be due to the user typing a non-existent URL (404), application overload (500), or something forbidden for a certain user to access (403). A good application handles these errors in a user-interactive way instead of showing an ugly white page, which makes no sense to most users. Flask provides an easy-to-use decorator to handle these errors. In this recipe, we will understand how we can leverage this decorator.

Getting ready

The Flask app object has a method called errorhandler(), which enables us to handle our application's errors in a much more beautiful and efficient manner.

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