Once you know how to add and use a Python module, you will greatly extend the capabilities of the language. A Python module is an external class or set of functions that exist outside the main ...

how its garbage collection system helps optimize memory in Python programs, and how to use the modules available in the standard library and elsewhere to control memory use and garbage collection.

The pathlib module now has a walk method, allowing for the exploration of directory trees. This new feature can make it easier for developers to work with file systems in their Python programs.

For instance, if a developer were to accidentally use a rogue pseudo-random number generator instead of Python's official secret module, an app's cryptographic functions might be easy for ...