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

Dialog boxes


Dialog boxes are the most simple and common interaction a user interface can provide. Asking for one simple input, such as a number, text, or yes/no, handles many needs of interaction with a user in simple applications.

tkinter comes with dialogs for most cases, but it might be hard to spot them all if you don't already know the library. As a pointer, all dialog boxes provided by tkinter share a very similar signature, so it's easy to make a dialog function that allows us to show them all:

 

 

The dialog box will look as shown:

The window to open a file appears as shown in the following screenshot:

 

How to do it...

We can create a dialog function to hide the minor differences between dialog types and call the appropriate dialog depending on the kind of request:

from tkinter import messagebox
from tkinter import simpledialog
from tkinter import filedialog

def dialog(ask, title, message=None, **kwargs):
    for widget in (messagebox, simpledialog, filedialog):
        show = getattr...