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Function & Module

• The three basic components of a function are the def statement, the code block that performs the action, and the optional return value.

• Parameters make functions more flexible, allowing different values to be passed to change the function’s behavior.

• Modules are like sound libraries in games, organizing related functionalities together and calling them via the import statement.

• Creating modules allows code to be divided into reusable parts for easier management and maintenance.

• Functions can have parameters, and the order of parameters is important.

• Functions can return values using the return statement.

• Functions can have no parameters or multiple parameters.

• Positional arguments and keyword arguments are two ways to pass parameters, with keyword arguments improving code readability.

• Default parameter values can be specified in the function definition, allowing the parameter to be omitted during the call.

• Variable scope is divided into global and local variables, with local variables only being valid within the function and global variables modifiable inside the function using the global keyword.

• Python provides various methods for importing modules, including full module import (import math) and specific function import (from math import pi).

• The Python standard library offers many useful modules, such as math, random, and time.