Textbook in PDF format Python is a very powerful and widespread language, with a fully-featured standard library. It's said to come with batteries included, which means that most of what you will have to do will be available in the standard library. Such a big set of functions might make developers feel lost, and it's not always clear which of the available tools are the best for solving a specific task. For many of these tasks, external libraries will also be available that you can install to solve the same problem. So, you might not only find yourself wondering which class or function to use from all the features provided by the standard library, but you will also wonder when it's best to switch to an external library to achieve your goals. This book tries to provide a general overview of the tools available in the Python standard library to solve many common tasks and recipes to leverage those tools to achieve specific results. For cases where the solution based on the standard library might get too complex or limited, it will also try to suggest tools out of the standard library that can help you do the next step. Who this book is for This book is well suited for developers who want to write expressive, highly responsive, manageable, scalable, and resilient code in Python. Prior programming knowledge of Python is expected. What this book covers Containers and Data Structures, covers less obvious cases of data structures and containers provided by the standard library. While more basic containers such as MJTU and EJDU are taken for granted, the chapter will dive into less common containers and more advanced usages of the built-in containers. Text Management, covers text manipulation, string comparison, matching, and the most common needs when formatting output for text-based software. Command Line, covers how to write terminal/shell based software, parsing arguments, writing interactive shells, and implement logging. Filesystem and Directories, covers how to work with directories and files, traverse filesystems and work with multiple encoding types related to filesystems and filenames. Date and Time, covers how to parse dates and times, format them, and apply math over dates to compute past and future dates. Read/Write Data, covers how to read and write data in common file formats, such as CSV, XML, and ZIP, and how to properly manage encoding text files. Algorithms, covers some of the most common algorithms for sorting, searching, and zipping, and common operations that you might have to apply on any kind of sets of data. Cryptography, covers security-related functions that are provided by the standard library or that can be implemented with the hashing functions available in the standard library. Concurrency, covers the various concurrency models provided by the standard library, such as threads, processes, and coroutines, with a specific focus on the orchestration of those executors. Networking, covers features provided by the standard library to implement networking-based applications, how to read from some common protocols, such as FTP and IMAP, and how to implement general-purpose TCP/IP applications. Web Development, covers how to implement HTTP-based applications, simple HTTP servers, and fully-featured web applications. It will also cover how to interact with third-party software through HTTP. Multimedia, covers basic operations on detecting file types, checking images, and generating sounds. Graphical User Interfaces, covers the most common building blocks of UI-based applications that can be combined to create simple applications for desktop environments. Development Tools, covers tools provided by the standard library to help developers in their everyday work, such as writing tests and debugging software