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Description

Flask is a small but powerful web development framework for Python. Though Flask is termed a micro-framework, it is no way lacking in functionality; there are many extensions available to Flask which helps it to function at the same level as other large frameworks such as Django and Ruby on Rails. This book will demonstrate how to develop a series of web application projects with the Python web micro-framework, and leverage extensions and external Python libraries and APIs to extend the development of a variety of larger and more complex web applications. The book will start by explaining Python’s Virtualenv library and how to create and switch between multiple virtual environments. You’ll first build an SQL database-backed application, which will use Flask-WTF, Flask-SQLAlchemy, Jinja templates, and other methods. Next you’ll move on to a timeline application, built using concepts including pytest-Flask, the Blinker package, data modelling for user timelines, exception handling, and creating and organizing CLI tools. Moving on, you’ll discover how to implement a photo timeline application where you’ll explore topics such as writing and running celery tasks, API error handling and testing, and Werkzeug middlewares. Finally, the book walks you through creating an application which fetches data from GitHub and stores it locally. You will also learn how to install and configure Flask-Click extension.

What you will learn

Use the virtualenv Python package to effectively isolate your development environments

Convert a simple onefile Flask application into a more fullfledged multipackage application

Integrate FlaskLogin for simple user authentication, FlaskWTF for forms, and FlaskSQLAlchemy for database interactions

Explore URL routing and dispatching in a blueprint structured application

Create your own signals and consume them within your application

Learn to leverage Werkzeug, the WSGI library that powers much of Flask

Implement custom exceptions for handling non20x response codes

Write your own CLI tools for administrative and development tasks of your Flask application using FlaskScript/Click

Build your Flask extensions to encapsulate reusable behaviors across your applications

Integrate your application with open source JavaScriptbased graphing libraries to create simple data visualizations

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Frequently bought together

Learning Flask Framework

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Mastering Flask

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Joseph Erskine Jun 07, 2016

One of the best programming books I’ve come across. I’ve read through Flask blogs (i.e. Flask-Mega Tutorial) and never felt like I had a good grasp on the framework. The authors provides a concise, in-depth look into Flask. Highly recommend if you want to get beyond the surface level.

Amazon Verified review

Kevin Aug 10, 2016

It needs a proper code review.It may sound harsh, but this reminded me of one of those projects you get hired on to fix something that never worked. When they show you the code, it's like the former guy just stopped working and left. I spent a few hours fixing problems and at page 50 threw in the towel. The point is to learn the framework, not debug the code.

Roger Pence Feb 13, 2016

This book continues Packt's grand tradition of poor tech reviews of the code presented. The code in the book, and the book's accompanying downloadable is wrong in several places. Note to self: only buy books where the code is on GitHub!All that said, the author taught me a couple of things and I'll give him another try--if he finds a better publisher.

Flask Blueprints: Dive into the world of the Flask microframework to develop an array of web applications

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