In this tutorial, you'll learn how to define and call your own Python function. You'll also learn about passing data to your function, and returning data from your function back to its calling environment.| realpython.com
2. Built-in Functions¶| docs.python.org
Author, Guido van Rossum,. This article explains the new features in Python 3.0, compared to 2.6. Python 3.0, also known as “Python 3000” or “Py3K”, is the first ever intentionally backwards incomp...| Python documentation
Master real-world Python skills with a community of experts.| realpython.com