In this chapter you’ll:

• Create custom functions.

• Import and use Python Standard Library modules, such as random and math, to reuse code and avoid “reinventing the wheel.”

• Pass data between functions.

• Generate a range of random numbers.

• Learn simulation techniques using random-number generation.

• Pack values into a tuple and unpack values from a tuple.

• Return multiple values from a function via a tuple.

• Understand how an identifier’s scope determines where in your program you can use it.

• Create functions with default parameter values.

• Call functions with keyword arguments.

• Create functions that can receive any number of arguments.

• Use methods of an object.