Book Image

Python API Development Fundamentals

By : Jack Chan, Ray Chung, Jack Huang
Book Image

Python API Development Fundamentals

By: Jack Chan, Ray Chung, Jack Huang

Overview of this book

Python is a flexible language that can be used for much more than just script development. By knowing the Python RESTful APIs work, you can build a powerful backend for web applications and mobile applications using Python. You'll take your first steps by building a simple API and learning how the frontend web interface can communicate with the backend. You'll also learn how to serialize and deserialize objects using the marshmallow library. Then, you'll learn how to authenticate and authorize users using Flask-JWT. You'll also learn how to enhance your APIs by adding useful features, such as email, image upload, searching, and pagination. You'll wrap up the whole book by deploying your APIs to the cloud. By the end of this book, you'll have the confidence and skill to leverage the power of RESTful APIs and Python to build efficient web applications.
Table of Contents (12 chapters)

The JSON Format

JavaScript Object Notation (JSON) is a simple plaintext format that is capable of representing complex data structures. We can use this format to represent strings, numbers, arrays, and even objects. Once we have the information "JSONified," we can use this widely adopted format to communicate with the API.

We are going to show you what a JSON format file looks like. In the following example, you will see that we are representing two recipes in JSON format. A JSON document is a plaintext document; there is no encryption here. It is so readable that I am sure you can already tell (without further explanation) that there are two recipes here, each with an ID, name, and description.

Here are a few notes on JSON syntax:

  • Arrays are enclosed by []
  • Objects can be represented by {}
  • Names/values always exist in pairs, and are delimited by ":"
  • Strings are enclosed by ""

Following is a sample code file with JSON syntax:

      "name":"Egg Salad",
      "description":"Place an egg in a saucepan and..."
      "name":"Tomato Pasta",
      "description":"Bring a large pot of lightly salted water to a boil..."