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

Chapter 3. Command Line

In this chapter, we will cover following recipes:

  • Basic logging—logging allows you to keep track of what the software is doing, and it's usually unrelated to its output
  • Logging to file—when logging is frequent, it is necessary to store the logs on a disk
  • Logging to Syslog—if your system has a Syslog daemon, you might want to log in to Syslog instead of using a standalone file
  • Parsing arguments—when writing with command-line tools, you need parsing options for practically any tool
  • Interactive shells—sometimes options are not enough and you need a form of Read-Eval-Print Loop to drive your tool
  • Sizing terminal text—to align the displayed output properly, we need to know the terminal window size
  • Running system commands—how to integrate other third-party commands in your software
  • Progress bar—how to show a progress bar in your text tool
  • Message boxes—how to display an OK/cancel message box in a text tool
  • Input box—how to ask for input in a text tool