realpython.com / .realpython-com

Wondering what the arrow notation means in Python? Discover how -> is used in type hints, functions, and more---with clear explanations and examples.

Test your skills with uv, the fast Python project manager. Practice setup, package installs, and key files created by uv.

Test your understanding of Python return type hints and learn how to use the -> arrow, annotate containers, and check code with static tools.

What are your options for hosting your Python application or scripts? What are the advantages of a platform as a service, container-based hosts, or setting up a virtual machine? Christopher Trudeau is back on the show this week, bringing another ...

Learn how to use .dropna() to drop null values from pandas DataFrames so you can clean missing data and keep your Python analysis accurate.

Quiz yourself on pandas .dropna(): remove nulls, clean missing data, and prepare DataFrames for accurate analysis.

Master Python string splitting with .split() and re.split() to handle whitespace, delimiters & multiline text.

The Python documentary debuts! Explore Python's journey, 2025 survey results, explosive growth, and key September news updates.

Practice defining and calling functions in Python, including parameters, argument types, default values, and function documentation.

Test your skills in sorting Python dictionaries by keys and values. Learn about insertion order, dictionary views, and sorting techniques.