Python Function Design: Writing Keyword-Only Arguments

When designing Python functions, relying solely on positional arguments can lead to silent bugs and confusing code. By enforcing keyword-only arguments, you make your function calls explicit, self-documenting, and highly resilient to future changes. This text-only course guides you through the mechanics of Python function signatures. You will transition from writing basic functions to designing robust, professional APIs that prevent common caller mistakes. What you'll learn: 1. Understand the foundational mechanics of Python function arguments and parameters. 2. Implement keyword-only arguments using the asterisk (*) syntax to enforce explicit calls. 3. Apply modern Python type hints to your function signatures for better code clarity. 4. Compare positional-only parameters (using the slash / operator) with keyword-only arguments. 5. Practice refactoring legacy functions into clean, modern, and self-documenting APIs. The course begins with core terminology and the fundamentals of parameter passing before moving into signature design and modern Python best practices. You will learn through clear written explanations, practical code snippets, and targeted reading exercises. This course is designed for beginner Python developers looking to elevate their coding style, with no advanced prerequisites required. Start writing clearer, bug-free Python functions today.