Wiley_Making_Use_of_Python.pdf

Making Use of Python

Rashi Gupta

Wiley Publishing, Inc.

Publisher: Robert Ipsen

Editor: Ben Ryan

Managing Editor: Angela Smith

New Media Editor: Brian Snapp

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Library of Congress Cataloging-in-Publication Data:

ISBN: 0471-21975-4

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10 9 8 7 6 5 4 3 2 1

Contents

Introduction

Scenario

xxiii

Chapter 1

An Introduction to Python

Getting Started

Understanding Requirements

Determine Requirements of the University

Obtain Python and Its Documentation

Determine the System Requirements

Install Python

Start Python in Different Execution Modes

Summary

Chapter 2

Getting Started with Python

Getting Started

Writing Your First Python Program

Comments

Python as a Calculator

Using Variables in Python

Variables

Assigning Values to Variables

Standard Types

Identifiers and Keywords

Memory Management

Create a Sequence to Store All the Names of the Students

Write the Code to Display the Names of the Students

Contents

Declare a Dictionary of Student Purchases with the

Names of the Students as the Key

Write the Code to Display the Student Purchases

Save and Execute the Code

Verify the Details

Summary

Chapter 3

Intrinsic Operations and Input/Output

Getting Started

Using Input/Output Features and Intrinsic Operations

for Data Types in Python

Identify the Variables to Be Used

Accepting User Input

Formatting the Output

Introduction to Intrinsic Operations

Intrinsic Operations for Numeric Data Types

Intrinsic Operations for Strings

Intrinsic Operations for Lists and Tuples

Write the Code

Execute the Code

Summary

Chapter 4

Programming Basics

Getting Started

Conditional Operators

Order of Precedence of Operators

Using Programming Constructs

Identify the Control and Loop Statements to Be Used

Write the Code

Execute the Code

Summary

Chapter 5

Functions

Getting Started

100

Using Functions

100

Functions

101

Scope of Variables

118

Identify the Functions to Be Used

119

Write the Code

119

Execute the Code

121

Summary

122

Chapter 6

Modules

123

Getting Started

124

Using Modules

124

Modules

124

Packages

135

Identify the Modules to Be Used

136

Contents

vii

Write the Code

137

Execute the Code

139

Summary

140

Chapter 7

Files

141

Getting Started

141

Using File Objects

142

Identify the Functions and Methods to Be Used

142

Write the Code to Store Course Details to the File

154

Execute the Code

155

Verify the Solution

155

Summary

156

Chapter 8

Object-Oriented Programming

157

Getting Started

158

Introducing OOP

158

Components of OOP

159

Benefits of OOP

160

Using Classes

161

Identify the Classes to Be Defined

162

Identifying the Class Objects

163

Identifying the Classes to Be Inherited and Their Objects

170

Identify the Methods to Be Overridden

173

Write the Code

182

Execute the Code

189

Summary

190

Chapter 9

Exception Handling

193

Getting Started

193

Handling Exceptions

194

Identify the Type of Error and Where the Error Occurs

196

Identify the Mechanism of Trapping the Exception

200

Identify the Location for the Code for Handling

the Exception to Be Written

209

Write the Code for Handling the Exception

209

Save and Execute the Code

210

Summary

210

Chapter 10

CGI Programming

213

Getting Started

213

Internet Basics

214

World Wide Web

217

Web Browsers

217

Hypertext Transfer Protocol (HTTP)

220

Revising HTML

221

Client-Side versus Server-Side Scripting

227

An Introduction to CGI

229

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