Chapter 5 review questions and T/F

A local variable can be accessed by all the functions in a program.

false

A statement in one function can access a local variable in another function.

false

Boolean functions have no return type.

false

Calling a function and defining a function mean the same thing.

false

In Python you cannot write functions that accept multiple arguments.

false

The phrase "divide and conquer" means that all of the programmers on a team should be divided and work in isolation.

false

The value of a global constant can only be changed within a function.

false

You do not need to have an import statement in a program to use the functions in the random module.

false

A group of statements that exist within a program for the purpose of performing a specific task is a(n) __________. a. block b. parameter c. function d. expression

function

A global variable whose value cannot be changed is known as __________. a. global constant b. local variable c. global variable d. local constant

global constant

A variable that is visible to every function in a program file is a __________. a. local variable b. universal variable c. program-wide variable d. global variable

global variable

The first line of a function definition is known as the __________. a. body b. introduction c. initialization d. header

header

A __________ is a diagram that gives a visual representation of the relationships between functions in a program. a. flowchart b. function relationship chart c. symbol chart d. hierarchy chart

hierarchy chart

20. This is not a function of math module. a. hypot (x, y) b. radians (x) c. sin (x) d. len (x)

len(x)

This is a prewritten function that is built into a programming language. a. standard function b. library function c. custom function d. cafeteria function

library function

A __________ is a variable that is created inside a function. a. global variable b. local variable c. hidden variable d. none of the above; you cannot create a variable inside a function

local variable

A variable created inside a function block is known as a __________. a. global variable b. local variable c. super variable d. new variable

local variable

A(n) __________ is a special variable that receives a piece of data when a function is called. a. argument b. parameter c. header d. packet

parameter

This standard library function returns a random floating-point number in the range of 0.0 up to 1.0 (but not including 1.0). a. random b. randint c. random_integer d. uniform

randint

This statement causes a function to end and sends a value back to the part of the pro- gram that called the function. a. end b. send c. exit d. return

return

A(n) __________ is the part of a program in which a variable may be accessed. a. declaration space b. area of visibility c. scope d. mode

scope

This value initializes the formula that generates random numbers. a. dummy value b. random value c. seed value d. new value

seed value

A design technique that programmers use to break down an algorithm into functions is known as __________. a. top-down design b. code simplification c. code refactoring d. hierarchical subtasking

top-down design

A hierarchy chart does not show the steps that are taken inside a function.

true

An import statement can be used to call a built-in function that is stored in a module.

true

Complex mathematical expressions can sometimes be simplified by breaking out part of the expression and putting it in a function.

true

IPO charts provide only brief descriptions of a function's input, processing, and output, but do not show the specific steps taken in a function.

true

Some library functions are built into the Python interpreter.

true

Void functions do not return any value when they are called.

true

You cannot have both keyword arguments and non-keyword arguments in a function call.

true

This standard library function returns a random floating-point number within a speci- fied range of values. a. random b. randint c. random_integer d. uniform

uniform

A(n) __________ is a piece of data that is sent into a function. a. argument b. parameter c. header d. packet

argument

When possible, you should avoid using __________ variables in a program. a. local b. global c. reference d. parameter

b. global

This type of function returns either True or False. a. Binary b. true_false c. Boolean d. logical

boolean

A design technique that helps to reduce the duplication of code within a program and is a benefit of using functions is __________. a. code reuse b. divide and conquer c. debugging d. facilitation of teamwork

code reuse