Functions & Reusability
Learn how to write clean, modular, and reusable code using functions. Define logic blocks with the def keyword, pass arguments, use default values, and return results. Understand how variable scope works in Python, and apply compact one-line logic using lambda functions. Mastering these concepts improves code organization, avoids repetition, and builds a strong foundation for automation, scripting, and solving complex challenges.
Learn how to define reusable blocks of code using the def keyword. Understand function structure, indentation, and how to call a function.
Understand how to pass values into functions using arguments, how default arguments work, and how to return results using the return keyword.
Explore variable visibility in functions (local vs global), and how to use lambda for writing small anonymous functions quickly.
Learn how to reuse code by importing existing modules or creating your own. Master the use of built-in libraries (like os, math, random), third-party tools (like requests), and understand how to organize code across multiple files for larger challenges or automation scripts.