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Introduction to Python Programming and Developing GUI Applications with PyQT.pdf

发布时间：2022-06-15 发布人：admin 分类：说明书 资料大小：20.00M 资料格式：pdf 举报 版权申诉
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    Cover
    Copyright
    Acknowledgments
    About the Author
    Contens
    Intrduction
    Chapter 1 Python and Its Features
    1.1 Python
    1.2 Installing Python
    1.3 Interacting with Python
    1.4 Writing Your First Python Program
    1.5 Data Types in Python
    1.6 Basic Elements in a Program
    1.7 Comments
    1.8 Continuation Lines
    1.9 Printing
    Summary
    Chapter 2 Getting Wet in Python
    2.1 Performing Arithmetic Operations
    2.2 Bitwise Operations
    2.3 Complex Numbers
    2.4 Making Decisions
    2.5 Logical Operators
    2.6 Chaining Comparison Operators
    2.7 Loops
    Summary
    Chapter 3 Sequences
    3.1 Sequences
    3.2 Strings
    3.3 Lists
    3.4 Tuples
    3.5 Sets
    Summary
    Chapter 4 Functions and Modules
    4.1 Functions
    4.2 Function Attributes
    4.3 Recursion
    4.4 Iterators
    4.5 Modules
    Summary
    Chapter 5 Classes
    5.1 The Class Statement
    5.2 Class Methods
    5.3 Static Methods
    5.4 Garbage Collection
    5.5 Inheritance
    5.6 Multilevel Inheritance
    5.7 Operator Overloading
    5.8 Descriptors
    Summary
    Chapter 6 File Handling
    6.1 Exception Handling
    6.2 Raising an Exception
    Summary
    Chapter 7 PyQt
    7.1 Qt Toolkit
    7.2 PyQt
    7.3 Installing PyQt
    7.4 Window and Dialogs
    7.5 Creating a GUI Application with Code
    7.6 Using Qt Designer
    7.7 Understanding Fundamental Widgets
    7.8 Event Handling in PyQt
    7.9 First Application in Qt Designer
    7.10 Using Custom Slots
    7.11 Converting Data Types
    7.12 Defining Buddies
    Summary
    Chapter 8 Basic Widgets
    8.1 Using Radio Buttons
    8.2 Using Checkboxes
    8.3 Entering Integer and Float Values Using a Spin Box
    8.4 ScrollBars and Sliders
    8.5 Working with a List Widget
    Summary
    Chapter 9 Advanced Widgets
    9.1 Displaying System Clock Time in LCD Format
    9.2 Working with Calendar and Displaying Dates in Different Formats
    9.3 Using Combo Box
    9.4 Displaying a Table
    9.5 Displaying Web Pages
    9.6 Displaying Graphics
    Summary
    Chapter 10 Menus and Toolbars
    10.1 Understanding Menus
    10.2 Creating a Toolbar
    10.3 Dock Widget
    10.4 Tab Widget
    10.5 Converting a Tab Widget
    Summary
    Chapter 11 Multiple Documents and Layouts
    11.1 Multiple-Document Interface
    11.2 Layouts
    Summary
    Chapter 12 Database Handling
    12.1 Why MySQL?
    12.2 Creating a Database
    12.3 Database Maintenance Through Console-Based Programs
    12.4 Database Maintenance Through GUI Programs
    Summary
    Index
    Copyright Introduction to Python® Programming and Developing GUI Applications with PyQT B.M. Harwani Publisher and General Manager, Course Technology PTR: Stacy L. Hiquet Associate Director of Marketing: Sarah Panella Manager of Editorial Services: Heather Talbot Marketing Manager: Mark Hughes Senior Acquisitions Editor: Mitzi Koontz Project Editor: Kim Benbow Technical Reviewer: Keith Davenport Copy Editor: Gene Redding Interior Layout: MPS Limited, a Macmillan Company Cover Designer: Mike Tanamachi Indexer: BIM Indexing Services Proofreader: Brad Crawford © 2012 Course Technology, a part of Cengage Learning. ALL RIGHTS RESERVED. No part of this work covered by the copyright herein may be reproduced, transmitted, stored, or used in any form or by any means graphic, electronic, or mechanical, including but not limited to photocopying, recording, scanning, digitizing, taping, Web distribution, information networks, or information storage and retrieval systems, except as permitted under Section 107 or 108 of the 1976 United States Copyright Act, without the prior written permission of the publisher. For product information and technology assistance, contact us Cengage Learning Customer & Sales Support, 1-800- at 354-9706
    For permission to use material from this text or product, submit all requests online at www.cengage.com/permissions Further permissions questions can be emailed to permissionrequest@cengage.com Python and the Python logos are trademarks or registered trademarks of the Python Software Foundation. All other trademarks are the property of their respective owners. All images © Cengage Learning unless otherwise noted. Library of Congress Control Number: 2011936040 ISBN-13: 978-1-4354-6097-3 ISBN-10: 1-4354-6097-9 eISBN-10: 1-4354-6098-7 Course Technology, a part of Cengage Learning 20 Channel Center Street Boston, MA 02210 USA Cengage Learning is a leading provider of customized learning solutions with office locations around the globe, including Singapore, the United Kingdom, Australia, Mexico, Brazil, and Japan. Locate your local office at: international.cengage.com/region Cengage Learning products are represented in Canada by Nelson Education, Ltd. For your lifelong learning solutions, visit courseptr.com Visit our corporate website at cengage.com Printed in the United States of America 1 2 3 4 5 6 7 13 12 11 Dedication This book is dedicated to my mother, Mrs. Nita Harwani, and American inventor and entrepreneur, the late Steve Jobs. My mother is next to God for me, and whatever I am today is because of the moral values taught by her. Steve Jobs, co-founder, chairman, and chief executive officer of Apple Inc. has been and will always be a great inspiration for me.
    Acknowledgments I owe a debt of gratitude to Mitzi Koontz, Senior Acquisitions Editor at Course Technology, Cengage Learning for her initial acceptance and giving me an opportunity to create this work. I am highly grateful to the whole team at Cengage for their constant cooperation and contribution to create this book. I must thank Keith Davenport, the technical editor for his excellent, detailed review of the work and the many helpful comments and suggestions he made. He offered a significant amount of feedback that helped to improve the book’s content. He played a vital role in improving its structure and the quality of information. Special thanks to Gene Redding, the copy editor for first class structural and language editing. I appreciate his efforts in enhancing the contents of the book and giving it a polished look. Big and ongoing thanks to Kim Benbow, my project editor, for doing a great job and her sincere efforts to get the book published on time. A great big thank you goes to the production staff who worked tirelessly to produce this book. I enjoyed working with each of you. I am also thankful to my family (my small world): Anushka (my wife) and my two little darlings, Chirag and Naman, for always inspiring me and giving me the courage to work harder. I should not forget to thank my dear students who have been good teachers for me, as they help me to understand the basic problems they face with a subject, which enables me to directly teach those topics. Their endlessly interesting queries help me to write books with a practical approach.
    About the Author B.M. Harwani is founder and owner of Microchip Computer Education (MCE), based in Ajmer, India, which provides computer education on all programming and web developing platforms. Harwani graduated with a BE in computer engineering from the University of Pune, and also has a C Level (master’s degree) in computer technology from DOEACC, Government of India. Being involved in the teaching field for over 16 years, he has developed the art of explaining even the most complicated technical topics in a straightforward and easily understandable fashion. He has written several books on various subjects that include JSP, JSF, EJB, PHP, .NET, Joomla, jQuery, and smartphones. His latest books include Beginning Web Development for Smartphones (Shroff, 2011), Core Data iOS Essentials (Packt Publishing, 2011) and Blogging with WordPress 3 for Beginners (CreateSpace, 2011). He also writes articles on a variety of computer subjects, which can be seen on a number of websites. To find out more, visit his blog at http://bmharwani.com/blog.
    Table of Contents Copyright 2 Acknowledgments 4 About the Author 5 Contens 6 Intrduction 11 Chapter 1 Python and Its Features 15 1.1 Python 16 1.2 Installing Python 19 1.3 Interacting with Python 24 1.4 Writing Your First Python Program 27 1.5 Data Types in Python 29 1.6 Basic Elements in a Program 31 1.7 Comments 32 1.8 Continuation Lines 33 1.9 Printing 34 Summary 37 Chapter 2 Getting Wet in Python 38 2.1 Performing Arithmetic Operations 39 2.2 Bitwise Operations 49 2.3 Complex Numbers 52 2.4 Making Decisions 54
    2.5 Logical Operators 58 2.6 Chaining Comparison Operators 60 2.7 Loops 63 Summary 73 Chapter 3 Sequences 74 3.1 Sequences 75 3.2 Strings 76 3.3 Lists 90 3.4 Tuples 96 3.5 Sets 100 Summary 103 Chapter 4 Functions and Modules 104 4.1 Functions 105 4.2 Function Attributes 115 4.3 Recursion 117 4.4 Iterators 120 4.5 Modules 124 Summary 129 Chapter 5 Classes 130 5.1 The Class Statement 131 5.2 Class Methods 139 5.3 Static Methods 141
    5.4 Garbage Collection 144 5.5 Inheritance 146 5.6 Multilevel Inheritance 153 5.7 Operator Overloading 163 5.8 Descriptors 168 Summary 172 Chapter 6 File Handling 173 6.1 Exception Handling 186 6.2 Raising an Exception 191 Summary 193 Chapter 7 PyQt 194 7.1 Qt Toolkit 196 7.2 PyQt 197 7.3 Installing PyQt 198 7.4 Window and Dialogs 201 7.5 Creating a GUI Application with Code 202 7.6 Using Qt Designer 205 7.7 Understanding Fundamental Widgets 220 7.8 Event Handling in PyQt 223 7.9 First Application in Qt Designer 224 7.10 Using Custom Slots 231 7.11 Converting Data Types 234
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