Book Image

Modern Python Cookbook. - Second Edition

By : Steven F. Lott
Book Image

Modern Python Cookbook. - Second Edition

By: Steven F. Lott

Overview of this book

Python is the preferred choice of developers, engineers, data scientists, and hobbyists everywhere. It is a great language that can power your applications and provide great speed, safety, and scalability. It can be used for simple scripting or sophisticated web applications. By exposing Python as a series of simple recipes, this book gives you insight into specific language features in a particular context. Having a tangible context helps make the language or a given standard library feature easier to understand. This book comes with 133 recipes on the latest version of Python 3.8. The recipes will benefit everyone, from beginners just starting out with Python to experts. You'll not only learn Python programming concepts but also how to build complex applications. The recipes will touch upon all necessary Python concepts related to data structures, object oriented programming, functional programming, and statistical programming. You will get acquainted with the nuances of Python syntax and how to effectively take advantage of it. By the end of this Python book, you will be equipped with knowledge of testing, web services, configuration, and application integration tips and tricks. You will be armed with the knowledge of how to create applications with flexible logging, powerful configuration, command-line options, automated unit tests, and good documentation.
Table of Contents (18 chapters)
16
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17
Index

Parsing a JSON request

Many web services involve a request to create a new persistent object or make an update to an existing persistent object. In order to implement these kinds of operations, the application will need input from the client.

A RESTful web service will generally accept input (and produce output) in the form of JSON documents. For more information on JSON, see the Reading JSON documents recipe in Chapter 10, Input/Output, Physical Format, and Logical Layout.

Flask provides the capability to parse JSON input from web clients. This makes it possible to have a client provide sophisticated documents to a web server.

Getting ready

We'll extend the Flask application from the Parsing the query string in a request recipe earlier in this chapter to add a user registration feature; this will add a player who can then request cards. The player is a resource that will involve the essential CRUD operations:

  • A client can do a POST to the /players...