精通Flask框架：Python web开发指南

4星 · 超过85%的资源需积分: 10 149 浏览量更新于2024-07-21 1 收藏 10.97MB PDF 举报

"Learning Flask Framework 是一本由PACKT在2015年出版的书籍，旨在教授读者如何利用Python的Flask框架构建动态、数据驱动的网站和现代Web应用。作者包括Matt Copperwaite和Charles Leifer。本书覆盖了从基础到高级的Flask应用开发知识，帮助读者掌握构建Flask应用程序的技能。" 在本书中，读者将学习到以下关键知识点： 1. **Flask框架介绍**：Flask是一个轻量级且功能强大的Python Web开发框架，它不强制开发者使用特定工具或库。Flask通过扩展机制允许添加应用功能，这些扩展就像原生集成在Flask中一样。 2. **基本应用搭建**：从创建一个简单的“Hello world”应用开始，引导读者逐步了解Flask的基本API和交互式调试器的使用。 3. **路由与视图**：学习如何使用Flask的URL映射功能将URL映射到视图函数，以便处理不同的HTTP请求。 4. **数据库操作**：通过ORM（对象关系映射）技术，学习如何存储和检索数据，例如创建一个博客系统，管理博客文章的增删改查。 5. **模板引擎**：理解并应用Flask的模板引擎，包括模板块、继承和文件上传功能，以实现动态网页生成。 6. **静态资源管理**：学习如何管理和部署静态资产，如CSS、JavaScript和图片等。 7. **用户认证**：构建用户认证系统，实现登录/注销功能，并创建一个用于管理博客的管理仪表板。 8. **Ajax请求**：了解如何在模板中发起Ajax请求，实现实时更新和交互性更强的用户体验。 9. **测试与Mock库**：使用Mock库简化复杂交互的测试，确保代码质量。 10. **应用部署**：学习如何安全地自动化部署Flask应用，确保部署过程可重复且可控。 11. **社区资源**：探索Flask生态系统中的流行资源，如插件、扩展和社区支持，以持续提升开发能力。通过本书的学习，读者将能够熟练地使用Flask框架，构建功能丰富的Web应用程序，并具备独立解决问题和优化应用的能力。无论是初学者还是有一定经验的开发者，都能从中受益。

[ vii ]

Preface

Welcome to Learning Flask, the book that will teach you the necessary skills to

build web applications with Flask, a lightweight Python web framework. This

book takes an example-driven approach that is designed to get you started quickly.

The practical examples are balanced with just the right amount of background

information to ensure that you understand not only the how, but also the why of

Flask development.

Flask was originally released by Armin Ronacher as part of an elaborate April

Fool's Day prank in 2010. The project touted itself as, "The next generation python

micro web-framework," and lampooned features made popular by similar

microframeworks. Although Flask was intended as a prank, the authors were

caught by surprise when many people expressed serious interest in the project.

Flask is a microframework that is built on top of two excellent libraries: the Jinja2

templating engine, and the Werkzeug WSGI toolkit. Despite being a relative

new-comer compared to other frameworks, such as Django, and Pylons, Flask has

garnered a large and loyal following. Flask provides powerful tools for common

web development tasks and encourages a bring-your-own-library approach for

everything else, allowing programmers the exibility to pick and choose the best

components for their application. Every Flask app is different, and as the project's

documentation states, "Flask is Fun".

The Flask microframework represents a departure in terms of design and API from

most other popular Python web frameworks, which has led many developers that

are new to Flask to ask, "What is the right way to build an app?" Flask does not offer

any strong opinions on how we, the developers, should build our app. Instead, it

provides opinions on what you need to build an app. Flask can be thought of as a

collection of objects and functions to deal with common web tasks, such as routing

URLs to code, processing request data, and rendering templates. While the level

of exibility that Flask provides is liberating, it can also lead to confusion and

poor designs.

Preface

[ viii ]

The purpose of this book is to help you see this exibility as opportunity. Over

the course of this book, we will be building and progressively enhancing a Flask-

powered blogging site. New concepts will be introduced through the addition of

new features to the site. By the end of the book, we will have created a fully-featured

website, and you will have a strong working knowledge of Flask and the ecosystem

of its commonly-used extensions and libraries.

What this book covers

Chapter 1, Creating Your First Flask Application, begins with the bold declaration,

"Flask is fun", which is one of the rst things that you see when you view the ofcial

Flask documentation, and in this chapter, you will get to grips with why so many

Python developers agree.

Chapter 2, Relational Databases with SQLAlchemy, says that relational databases are

the bedrock upon which almost all modern web applications are built. We will use

SQLAlchemy, a powerful object-relational mapper that allows us to abstract away

the complexities of multiple database engines. In this chapter, you will learn about

how the data model that you choose early on will affect almost every facet of the code

that follows.

Chapter 3, Templates and Views, covers two of the most recognizable components of

the framework: the Jinja2 template language, and the URL routing framework. We

will fully immerse ourselves in Flask and see our app nally start to take shape.

As we progress through the chapter, our app will start looking like a proper website.

Chapter 4, Forms and Validation, shows you how to use forms to modify content on

your blog directly through the site handled by the popular WTForms library. This

is a fun chapter because we will add all sorts of new ways to interact with our site.

We will create forms to work with our data models and learn how to receive and

validate user data.

Chapter 5, Authenticating Users, explains how you can add user authentication to

your site. Being able to distinguish one user from another allows us to develop an

entirely new class of features. For instance, we will see how to restrict access to the

create, edit, and delete views, preventing anonymous users from tampering with

site content. We can also display a user's draft posts to them but hide them from

everyone else.

Preface

[ ix ]

Chapter 6, Building an Administrative Dashboard, shows you how you can build an

administrative dashboard for your site, using the excellent Flask-Admin. Our admin

dashboard will give certain selected users the ability to manage all the content across

the entire site. In essence, the admin site will be a graphical frontend for the database,

supporting operations to create, edit, and delete rows in our application's tables.

Chapter 7, AJAX and RESTful APIs, uses Flask-Restless to create a RESTful API

for the blogging app. A RESTful API is a powerful way of accessing your app

programmatically by providing highly-structured data to represent it. Flask-Restless

works very well with our SQLAlchemy models, and it also handles complex tasks,

such as serialization, and result ltering.

Chapter 8, Testing Flask Apps, covers how you can write unit tests covering all parts

of the blogging app. We will utilize Flask's test client to simulate "live" requests. We

will also see how the Mock library can simplify testing complex interactions, such as

calling third-party services, such as databases.

Chapter 9, Excellent Extensions, teaches you how to enhance your Flask installation

with popular third-party extensions. We used extensions throughout the book, but

we can now explore the added extra security or functionality with very little effort

and can polish off your app nicely.

Chapter 10, Deploying Your Application, teaches you how to deploy your Flask

applications securely and in an automated, repeatable manner. We will look at how

to congure the commonly-used WSGI capable servers, such as Apache and Nginx,

as well as the Python web server Gunicorn, to give you plenty of options. Then, we

will see how to secure part or the entire site using SSL before nally wrapping up

our application in a conguration management tool to automate our deployment.

What you need for this book

While Python is at home on most operating systems, and we have tried to keep

an operating system-agnostic approach within the book, it is advisable to use a

computer running a Linux distribution or OS X when working with this book,

as Python is already installed and running. The Linux distribution can be either

installed on the machine or within a virtual machine. Almost any Linux distribution

will do, and any recent version of Ubuntu will be ne.

剩余249页未读，继续阅读

vanridin

粉丝: 108
资源: 1187

精通Flask框架：Python web开发指南

掌握Flask框架：构建动态Web应用实战教程

快速掌握Flask框架：实战构建动态网站与应用

精通Flask框架：构建动态网站与现代应用

Learning Flask Framework.

Learning Flask Framework.pdf 最新 原版

Learning Flask Framework 无水印pdf 0分

Flask By Example(PACKT,2016)

Flask框架教程：构建动态网站与现代应用

早期Flask框架入门指南：现代Web应用开发

基于freeRTOS和STM32F103x的手机远程控制浴室温度系统设计源码

最新资源

Learning Flask Framework.pdf 最新原版