Book Image

Qt5 Python GUI Programming Cookbook

By : B. M. Harwani
Book Image

Qt5 Python GUI Programming Cookbook

By: B. M. Harwani

Overview of this book

PyQt is one of the best cross-platform interface toolkits currently available; it's stable, mature, and completely native. If you want control over all aspects of UI elements, PyQt is what you need. This book will guide you through every concept necessary to create fully functional GUI applications using PyQt, with only a few lines of code. As you expand your GUI using more widgets, you will cover networks, databases, and graphical libraries that greatly enhance its functionality. Next, the book guides you in using Qt Designer to design user interfaces and implementing and testing dialogs, events, the clipboard, and drag and drop functionality to customize your GUI. You will learn a variety of topics, such as look and feel customization, GUI animation, graphics rendering, implementing Google Maps, and more. Lastly, the book takes you through how Qt5 can help you to create cross-platform apps that are compatible with Android and iOS. You will be able to develop functional and appealing software using PyQt through interesting and fun recipes that will expand your knowledge of GUIs
Table of Contents (20 chapters)
Title Page
Dedication
Packt Upsell
Contributors
Preface
Index

Using multiple inheritance


Multiple inheritance is where one class inherits two or more classes, as shown in the following diagram:

Class C inherits both classes, class A and class B.

The following statement defines multilevel inheritance where the Result class inherits the Marks class and the Marks class in turn inherits the Student class:

class Student:
    class Marks:
        class Result(Student, Marks):

In the preceding statements, Student and Marks are the base classes and the Result class inherits both the Student class and the Marks class. Consequently, the instance of the Result class can access the methods and variables of the Marks and Student classes.

Getting ready

To understand the concept of multilevel inheritance practically, let's create an application that will prompt the user to enter the code, name, history marks, and geography marks of a student, and will display the total marks and percentage on the click of a button. The total marks will be the sum of history marks and geography...