Starting out with python chapter 5

Function

A group of statements that exist within a program for the purpose of performing a specific task.

Code reuse

A design technique that helps with reduce the duplication of code within a program and is a benefit of using functions.

Header

The first line of a function definition.

Call it

In order to use a function you have to do this.

Top down design

A design technique that programmers use to break down an algorithm into functions.

Hierarchy chart

A diagram that gives a visual representation of the relationships between functions in a program.

Local variable

A variable that us created inside a function.

Scope

The part of the program in such a variable may be accessed.

Argument

A piece of data that is sent to a function.

Parameter

A special variable that receives a piece of data when a function is called.

Global variable

A variable that is visible to every function in a program file.

Global variable

You should avoid using these variables when possible.

Library function

A prewritten function that is built into the language.

Randint

This standard library function returns a random integer within a specified range of values.

Random

This standard library function returns a random floating point number in the rang of 0.0 up to 1.0 but not including 1.0.

Uniform

This standard library function returns a random float number in a specified range of values.

Return

This statement causesva function to end and sends a value back to the part of the program that called the function.

IPO

This is a design tool that describes the input, peocessing, and output of a function.

Boolean

This type of function returns either true or falsem

Sqrt

Example of a math module function.