Unit 9

Question 1

9.2 - User-Defined Function Basics

What is a function?

Answer 1

a grouping of pre-defined statements used for repeated operations

Question 2

9.2 - User-Defined Function Basics

What is a function definition?

Answer 2

creates/DEFINES a new function using def

ex. def calc_area()

Question 3

9.2 - User-Defined Function Basics

What is a function call?

Answer 3

using the function in code

ex. `print(calc_area(x, y))

Question 4

9.2 - User-Defined Function Basics

What is a return statement?

Answer 4

a single value that a function can return

functions only return ONE thing–including containers

Question 5

9.2 - User-Defined Function Basics

What is the difference between a parameter and an argument?

Answer 5

both serve as inputs for functions
parameter - anything
argument - number

Question 6

9.2 - User-Defined Function Basics

What is a nested function?

Answer 6

a function that calls another function

Question 7

9.2 - User-Defined Function Basics

What is a main function?

Answer 7

the primary section of code that eventually uses the other functions

AKA if \_\_name\_\_ == '\_\_main\_\_':

Question 8

9.3 - Print Functions

What is a void function?

Answer 8

a function with no return value; often seen with functions that only print things

Question 9

9.4 - Dynamic Typing

What is polymorphism?

Answer 9

adding together different types in a function

Question 10

9.4 - Dynamic Typing

What is the difference between dynamic and static typing?

Answer 10

dynamic - determines the type of objects as a program (Python)
static - programmer must define the type for every variable & function parameter in source code (C, C++)

Question 11

9.5 - Reasons for Defining Functions

What is modular development?

Answer 11

dividing a program into seperate modules, then develop and test the modules seperately

Question 12

9.5 - Reasons for Defining Functions

Why do programmers use functions?

Answer 12

makes programs easier to read and debug

Question 13

9.7 - Function Stubs

What is incrimental development?

Answer 13

writing small amounts of code and testing it; adding code incrimentally

Question 14

9.7 - Function Stubs

What are function stubs?

Answer 14

function definitions with unwritten statements

uses pass as a placeholder for functions

Question 15

9.7 - Function Stubs

What does NotImplementedError do?

Answer 15

indicates a function isn’t implemented yet; stops execution of program

Question 16

9.7 - Function Stubs

What does pass do?

Answer 16

skips code; used for function stubs