Keyword Parameters

Keyword parameters, also known as keyword arguments or named parameters, are a programming language feature that allows function or method calls to specify arguments by parameter names rather than just their positions. This enhances code readability, reduces errors from argument order, and enables optional parameters with default values. They are widely supported in languages like Python, Ruby, and Kotlin, and are a key aspect of clean API design.

Also known as: Keyword Arguments, Named Parameters, Named Arguments, Kwargs, Keyword Args

Why learn Keyword Parameters?

Developers should use keyword parameters when building functions with multiple optional arguments, as they make calls self-documenting and prevent bugs from misordered positional arguments. They are essential for creating flexible APIs, especially in libraries or frameworks where backward compatibility and clarity are priorities, such as in configuration settings or data processing pipelines.

Learning Resources

• docs: Python Documentation: Keyword Arguments
• tutorial: Real Python: Python args and kwargs
• docs: MDN Web Docs: Functions - Default parameters
• docs: Kotlin Docs: Default and Named Arguments
• video: YouTube: Keyword Arguments in Python