To get the most out of this book

The reader should be familiarized with Python's syntax and have a valid Python interpreter installed, which can be downloaded from https://www.python.org/downloads/

It is recommended to follow the examples in the book and test the code locally. For this, it is highly recommended to create a virtual environment with Python 3.7 and run the code with this interpreter. Instructions to create a virtual environment can be found at https://docs.python.org/3/tutorial/venv.html.

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/Clean-Code-in-Python. 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!

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: "Then, just running the pylint command is enough to check it in the code."

A block of code is set as follows:

class Point:
    def __init__(self, lat, long):
        self.lat = lat
        self.long = long

When we wish to draw your attention to a particular part of a code block, the relevant lines or items are set in bold:

setup(
    name="apptool",
    description="Description of the intention of the package",
    long_description=long_description,

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

>>> locate.__annotations__
 {'latitude': float, 'longitue': float, 'return': __main__.Point}

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: "Select System info from the Administration panel."

Warnings or important notes appear like this.

Tips and tricks appear like this.