Preface

1. Programming on the Web

The Request/Response Cycle

What Is Google App Engine？

What Is a "Cloud"？

Why Did Google Build App Engine and Give It Away for Free？

What Is the Google Infrastructure Cloud？

Enter the Application Engine

Your Application Must Be a Good Citizen in the Google Cloud

How the Cloud Runs Your Application

Why You Really Want to Run in the Cloud

The Simplest App Engine Application

Summary

Exercises

2. HTMLandCSS

A Brief History of HTML and CSS

HyperText Markup Language (HTML)

A Well-Formed HTML Document

Validating Your HTML

HyperText Links (Anchor Tags)

Multiple Files

Lists in HTML

Specifying Styles Using CSS

Styling Tags with CSS

Exerting More Control over Markup

Validating CSS

Tools to Help You Work with css

Building the Navigation Menu

The CSS Box Model

Adding Navigation Hints for Users

Summary

Exercises

3. Python

What Is Programming？

About Pyttion

Installing Python

The Essence of Programming

Input, Processing, and Output

Conditional Steps: A Number-Guessing Web Application

Variables and Expressions

Naming Variables

Constants

Handling Text Data Using Strings

Using the String Library

Types and Conversion

Variables with Many Values at the Same Time: Lists

Repeated Code: Loops

Python's Backpack: Dictionaries

Looping Through a Dictionary

Stored and Reused Code: Python Functions

Turning Traceback to Our Advantage Using Try and Except

Object-Oriented Python

Comments in Python

The Tao of Programming

Summary

Exercises

4. Sending Data to Your Application

Making an HTTP Request

Hacking the HTTP Protocol

The HTTP Protocol Standards

Watching HTTP in Action

HTML: Building a Form

Sending Form Data to the Server Using POST

Handling Form Data in the App Engine Server

Sending Form Data to the Server Using GET

App Engine Log

Looking at All the Data Available on an HTTP Request

Advanced: Multipart POST Data with File Upload

Summary

Exercises

5. TheApp Engine webapp Framework

A Trivial App Engine Application

An Equivalent Trivial webapp Application

The Handler Callback Pattern

Looking at the Handler Code

What Is "self" and Why Is It There？

Number Guessing Using the webapp Framework

Web Server Logs

Summary

Exercises

6. Templates

Template Syntax

Using the Templates from Python

The Number-Guessing Game Using Templates

Abstraction and Separation of Concerns: "Model View Controller"

Building a Multiscreen Application

Static Files in App Engine

Referencing Static Files

Generalizing Template Lookup with Multiple Templates

Extending Base Templates

Conditional Processing Templates

Replacing More Than One Block in the Base Template

Extending Our Application

Syntax Errors

More on Templates

Summary

Exercises

7. Cookies and Sessions

HTTP Cookies

Logging In and Logging Out Using Sessions

Installing the Simple Session Utility

Using the Session to Mark Login and Logout

Changing the User Interface for a Logged-In User

Summary

Exercises

8. AppEngineDatastore

The Model-View-Controller Pattern

Defining Models

Adding a New Account Form

Adding a User Account

Looking Through the Datastore

Logging In and Checking Accounts and Passwords

Retrieving and Displaying Many Objects

Terminology: Different Types of Keys

References Between Data Models

Interactions Between Models

Pt/tting the Primary Key into Session

Adding the Chat Feature

Summary

Exercises

9. lavaScript, jQuery, and AJAX

jquery

Create a View of the Chat Messages in HTML

Asynchronously Updating a