To get the most out of this book

Intermediate knowledge of Python is required though many topics are covered in a way that even beginners should have an understanding of the basic principles being covered. Specifically, the experience of using both the interactive Python interpreter and writing Python files, how to import modules, and how to work with object-oriented principles is assumed.

This book uses Python 3.6 for the examples, unless otherwise indicated. While alternative implementations are briefly discussed, the book assumes the basic CPython implementation is being used.

Download the example code files

You can download the example code files for this book from your account at www.packtpub.com. If you purchased this book elsewhere, you can visit www.packtpub.com/support and register to have the files emailed directly to you.

You can download the code files by following these steps:

1. Log in or register at www.packtpub.com.
2. Select the SUPPORT tab.
3. Click on Code Downloads & Errata.
4. Enter the name of the book in the Search box and follow the onscreen instructions.

Once the file is downloaded, please make sure that you unzip or extract the folder using the latest version of:

• WinRAR/7-Zip for Windows
• Zipeg/iZip/UnRarX for Mac
• 7-Zip/PeaZip for Linux

The code bundle for the book is also hosted on GitHub at https://github.com/PacktPublishing/Secret-Recipes-of-the-Python-Ninja. In case there's an update to the code, it will be updated on the existing GitHub repository.

We also have other code bundles from our rich catalog of books and videos available at https://github.com/PacktPublishing/. Check them out!

Download the color images

We also provide a PDF file that has color images of the screenshots/diagrams used in this book. You can download it from https://www.packtpub.com/sites/default/files/downloads/SecretRecipesofthePythonNinja_ColorImages.pdf.

Conventions used

There are a number of text conventions used throughout this book.

CodeInText: Indicates code words in text, database table names, folder names, filenames, file extensions, pathnames, dummy URLs, user input, and Twitter handles. Here is an example: "The sqrt(x) function returns the √x."

A block of code is set as follows:

def print_funct(arg):
    print(arg)
    if __name__ == "__main__":
        import sys
        print_funct(sys.argv[1])

Any command-line input or output is written as follows:

>>> import random
>>> random.randint(0, 1000)
607

Bold: Indicates a new term, an important word, or words that you see onscreen. For example, words in menus or dialog boxes appear in the text like this. Here is an example: "For example, during the creation of this book, this author had a problem creating a PDF copy of the Tutorial, because an error kept occurring when converting the EPS images to PDF images."

Warnings or important notes appear like this.

Tips and tricks appear like this.