Book Image

Python Programming Blueprints

By : Daniel Furtado, Marcus Pennington
Book Image

Python Programming Blueprints

By: Daniel Furtado, Marcus Pennington

Overview of this book

Python is a very powerful, high-level, object-oriented programming language. It's known for its simplicity and huge community support. Python Programming Blueprints will help you build useful, real-world applications using Python. In this book, we will cover some of the most common tasks that Python developers face on a daily basis, including performance optimization and making web applications more secure. We will familiarize ourselves with the associated software stack and master asynchronous features in Python. We will build a weather application using command-line parsing. We will then move on to create a Spotify remote control where we'll use OAuth and the Spotify Web API. The next project will cover reactive extensions by teaching you how to cast votes on Twitter the Python way. We will also focus on web development by using the famous Django framework to create an online game store. We will then create a web-based messenger using the new Nameko microservice framework. We will cover topics like authenticating users and, storing messages in Redis. By the end of the book, you will have gained hands-on experience in coding with Python.
Table of Contents (17 chapters)
Title Page
Copyright and Credits
Dedication
Contributors
Packt Upsell
Preface
Index

Creating the views


Before we create the views, we are going to create some helper classes and functions that will make the code in the view simpler and clean. Go ahead and create a file called view_helper.py in the main app directory, and as usual, let's start by including the import statements:

from rest_framework import generics, status
from rest_framework.response import Response

from django.http import HttpResponse

from .exceptions import InvalidArgumentError
from .exceptions import OrderAlreadyCancelledError
from .exceptions import OrderAlreadyCompletedError

from .serializers import OrderSerializer

Here, we import some things from the Django REST Framework, the main one being the generic, which contains definitions for the generic view classes that we are going to use to create our own custom views. The status contains all the HTTP status codes, which are very useful when sending the response back to the client. Then, we import the Response class, which will allow us to send content...