Python Functions Explained: Writing Reusable, Maintainable Code

Functions are a core Python concept that help developers write code that is reusable, organized, readable, and easier to maintain. Rather than repeating the same statements, a programmer can define a function once and call it whenever needed. The article illustrates this with an example where a repeated print statement is replaced by a welcome() function called three times. It also outlines the basic syntax, including the def keyword, the function name, parentheses, the colon, indented body, and the function call.