Defining a Function You can define functions to provide the required functionality. Here are simple rules to define a function in Python. Function blocks begin with the keyword def followed by the ...

## Docstrings Consider the following function: ```python def square (x): """Return the square of x.""" return x ** 2 ``` The string immediately below the function definition is called a docstring.

M4N asks: Is there a reason why functions in most (?) programming languages are designed to support any number of input parameters but only one return value? In most languages, it is possible to ...