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

Introduction


SQLite is a very easy-to-use database engine. Basically, it is a lightweight database meant to be used in small applications that can be stored in a single disk file. It is a very popular database used in phones, tablets, small appliances, and instruments. SQLite does not require a separate server process, and does not even require any configuration.

To make this database easy to use in Python scripts, the Python Standard Library includes a module called sqlite3. So, to use SQLite in any Python application, you need to import the sqlite3 module using the import statement shown here:

import sqlite3

The first step to use any database is to create a connect object, by means of which you need to establish a connection with the database. The following example establishes a connection to the ECommerce database:

conn = sqlite3.connect('ECommerce.db')

This example will establish a connection to the ECommerce database if it already exists. If the database does not already exist, the database...