Functions Recap

In this chapter, we learned how to work with functions in Python. We found that:

1. We use functions when we want to group repetitive code or solve a specific problem.
2. We define a function using the def keyword followed by the function name, parentheses, and a colon.
3. The body of the function contains the code that is executed when the function is called. This code is indented.
4. We call a function using its name followed by parentheses.
5. We can call a function only after its definition.
6. Functions can accept parameters that affect their behavior.
7. Parameters are specified in parentheses during the function definition, and we assign values to them when calling the function.
8. Function parameters can have default values, which are used if the parameter value is not provided when calling the function.
9. Functions can return values using the return keyword. Returning a value ends the function execution.