Book Image

Web Development with Django - Second Edition

By : Ben Shaw, Saurabh Badhwar, Chris Guest, Bharath Chandra K S
4.7 (3)
Book Image

Web Development with Django - Second Edition

4.7 (3)
By: Ben Shaw, Saurabh Badhwar, Chris Guest, Bharath Chandra K S

Overview of this book

Do you want to develop reliable and secure applications that stand out from the crowd without spending hours on boilerplate code? You’ve made the right choice trusting the Django framework, and this book will tell you why. Often referred to as a “batteries included” web development framework, Django comes with all the core features needed to build a standalone application. Web Development with Django will take you through all the essential concepts and help you explore its power to build real-world applications using Python. Throughout the book, you’ll get the grips with the major features of Django by building a website called Bookr – a repository for book reviews. This end-to-end case study is split into a series of bitesize projects presented as exercises and activities, allowing you to challenge yourself in an enjoyable and attainable way. As you advance, you'll acquire various practical skills, including how to serve static files to add CSS, JavaScript, and images to your application, how to implement forms to accept user input, and how to manage sessions to ensure a reliable user experience. You’ll cover everyday tasks that are part of the development cycle of a real-world web application. By the end of this Django book, you'll have the skills and confidence to creatively develop and deploy your own projects.
Table of Contents (19 chapters)

Debugging and dealing with errors

When programming, unless you’re the perfect programmer who never makes mistakes, you’ll probably have to deal with errors or debug your code at some point. When there is an error in your program, there are usually two ways to tell – either your code will raise an exception, or you will get unexpected output or results when viewing the page. You will probably see exceptions more often, as there are many accidental ways to cause them. If your code is generating unexpected output but not raising any exceptions, you will probably want to use the PyCharm debugger to find out why.

We’ll start with an overview of some Python exceptions and how to handle them, along with an exercise that demonstrates how Django shows exceptions. Then, we’ll look at running Django inside the PyCharm debugger so that you can peek inside your program while it executes.

Exceptions

If you have worked with Python or other programming languages...