Book Image

Modern Python Standard Library Cookbook

By : Alessandro Molina
Book Image

Modern Python Standard Library Cookbook

By: Alessandro Molina

Overview of this book

The Python 3 Standard Library is a vast array of modules that you can use for developing various kinds of applications. It contains an exhaustive list of libraries, and this book will help you choose the best one to address specific programming problems in Python. The Modern Python Standard Library Cookbook begins with recipes on containers and data structures and guides you in performing effective text management in Python. You will find Python recipes for command-line operations, networking, filesystems and directories, and concurrent execution. You will learn about Python security essentials in Python and get to grips with various development tools for debugging, benchmarking, inspection, error reporting, and tracing. The book includes recipes to help you create graphical user interfaces for your application. You will learn to work with multimedia components and perform mathematical operations on date and time. The recipes will also show you how to deploy different searching and sorting algorithms on your data. By the end of the book, you will have acquired the skills needed to write clean code in Python and develop applications that meet your needs.
Table of Contents (21 chapters)
Title Page
Copyright and Credits
Packt Upsell
Contributors
Preface
Index

Message boxes


While less common nowadays, there is still a lot of value in being able to create interactive character-based user interfaces, especially when just a simple message dialog with an OK button or an OK/cancel dialog is needed; you can achieve a better result by directing the user's attention to them through a nice-looking text dialog.

Getting ready

The curses library is only included, in Python for Unix systems, so Windows users might need a solution, such as CygWin or the Linux Subsystem for Windows, to be able to have a Python setup that includes curses support.

How to do it...

For this recipe, perform the following steps:

  1. We will make a MessageBox.show method which we can use to show a message box whenever we need it. The MessageBox class will be able to show message boxes with just OK or OK/cancel buttons:
import curses
import textwrap
import itertools


class MessageBox(object):
    @classmethod
    def show(cls, message, cancel=False, width=40):
        """Show a message with...