lukhnov / learn-python-programming-third-edition

Learn Python Programming 3E. Published by Packt

Learn Python Programming 3rd Edition

Welcome to Learn Python Programming, 3rd Edition.

Here you can find the complete source code for this book. Every line of code you will find in the book is in this repository, plus all the code that we couldn't fit in the book.

Working on a chapter

We suggest you create a dedicated virtual environment for each chapter you wish to work on. Chapters that require third-party libraries will have a folder inside, called requirements.

First you will need to create a virtual environment. If you don't know what a virtual environment is, please read Chapter 1.

Let's now pretend you want to work on Chapter 12. First, change into the folder for Chapter 12 (it's called ch12):

$ cd ch12

Then, create a virtual environment. In this example the virtual environment will live inside the chapter's folder, but you can choose any other folder that might suit you better.

$ python3.9 -m venv .venv

We have given the virtual environment folder the name .venv. Feel free to choose any other name that you might want.

Next step is to activate the virtual environment:

$ source  .venv/bin/activate

If you're on Windows, to activate your environment, you will need to run:

$ .venv\Scripts\activate

Next, if the requirements folder is present, change into it, and run the following command for each of the .txt files you will find in it. Normally there is only a requirements.txt file.

$ cd requirements
$ pip install -U -r requirements.txt
$ cd ..  # this brings you back to the root of the chapter

Once you have installed all requirements, you are ready to run the chapter's code. If a chapter needs extra work to be set up, you will find all the instructions you need in the chapter's text.

Note: Always remember to activate the virtual environment before you install third-party libraries.