Python Final

Front 1

It is possible to create a while loop that determines when the end of a file has been reached.

Back 1

True

Front 2

The decision structure that has two possible paths of execution is know as ___________________.

Back 2

Dual Alternative

Front 3

The if statement causes one or more statements to execute only when a Boolean expression is true.

Back 3

True

Front 4

The \t escape character causes the output to skip over to the next horizontal tab.

Back 4

True

Front 5

The first line in the while loop is referred to as the condition clause.

Back 5

False

Front 6

The main reason for using secondary storage is to hold data for long periods of time, even when the power supply to the computer is turned off.

Back 6

True

Front 7

The integrity of a program's output is only as good as the integrity of its input. For this reason the program should discard input that is invalid and prompt the user to enter correct data.

Back 7

True

Front 8

In Python, there is nothing that can be done if the program tries to access a file to read that does not exist.

Back 8

False

Front 9

Where does a computer store a program and the data that the program is working with while the program is running?

Back 9

Main Memory

Front 10

Python uses the same symbols for the assignment operator and the equality operator.

Back 10

False

Front 11

Which list will be referenced by the variable number after the execution of the following code?
number = range(0, 9, 2)

Back 11

​[0, 2, 4, 6, 8]

Front 12

A(n) _____________ structure is a logical design that controls the order in which a set of statements execute.

Back 12

Control

Front 13

Unlike other languages, in Python the number of values a function can return is limited to one.

Back 13

False

Front 14

Words that have a special meaning and may be used only for their intended purpose are known as:

Back 14

key words

Front 15

In Python, the variable in the for clause is referred to as the _______ because it is the target of an assignment at the beginning of each loop iteration.

Back 15

target variable

Front 16

Decision structures are also known as selection structures.

Back 16

True

Front 17

What do you call the process of retrieving data from a file?

Back 17

Reading data

Front 18

Programmer-defined names of memory locations that may hold data are:

Back 18

Variables

Front 19

What does the following expression mean? X <= Y

Back 19

x is less than or equal to y

Front 20

When a file has been opened using the 'r' mode specifier, which method will return the file's contents as a string.

Back 20

read

Front 21

The following is an example of an instruction written in which computer language?
10110000

Back 21

machine language

Front 22

Nested decision structures are one way to test more than one condition.

Back 22

True

Front 23

Python comes with ____________ functions that have been already prewritten for the programmer.

Back 23

standard

Front 24

In Python the ___________ symbol is used as the equality operator.

Back 24

==

Front 25

Assume that the customer file references a file object, and the file was opened using the 'w' mode specifier. How would you write the string 'Mary Smith' to the file?

Back 25

customer.write('Mary Smith')

Front 26

What is the structure that causes a statement or a set of statements to execute repeatedly?

Back 26

Repetition

Front 27

An exception handler is a piece of code that is written using the try/except statement.

Back 27

True

Front 28

The _________ function reads a piece of data that has been entered at the keyboard and returns that piece of data, as a string, back to the program.

Back 28

Input

Front 29

When an if statement is placed within the conditionally-executed code of another if statement, this is known as:

Back 29

Nesting

Front 30

What symbol is used to mark the beginning and end of a string?

Back 30

Quotation

Front 31

An action in a single alternative decision structure is performed only when the condition is true.

Back 31

True

Front 32

Given the following function definition, what would the statement print magic(5) display?
def magic(num):
return num + 2 * 10

Back 32

25

Front 33

If a file with the specified name already exists when the file is opened, and the file is opened in 'w' mode then an alert will appear on the screen.

Back 33

False

Front 34

A better way to repeatedly perform an operation is to write the statements for the task once, and then place the statements in a loop that will repeat the statements as many times as necessary.

Back 34

True

Front 35

A(n) ____________ is a diagram that graphically depicts the steps that take place in a program.

Back 35

Flowchart

Front 36

The variable used to keep the running total is called a(n) _________.

Back 36

Accumulator

Front 37

What is the disadvantage of coding in one long sequence structure?

Back 37

If parts of the duplicated code have to be corrected, the correction has to be made many times.

Front 38

What is a group of statments that exists within a program for the purpose of performing a specific task?

Back 38

Function

Front 39

Which of the following is the correct if clause to determine whether y is in the range 10 through 50

Back 39

if y > 10 and y < 50

Front 40

The Python library functions that are built into the Python ______ can be used by simply calling the function.

Back 40

interpreter

Front 41

What does the following statement mean?
num1, num2 = get_num()

Back 41

The function get_num() is expected to return a value each for num1 and num2.

Front 42

Computer programs typically perform three steps: Input is received, some process is performed on the input, and output is produced.

Back 42

True

Front 43

Strings can be written directly to a file with the write method, but numbers must be converted to strings before they can be written.

Back 43

True

Front 44

What makes it easier to reuse the same code in more than one program?

Back 44

Modules

Front 45

Which mode specifier will erase the contents of a file if it already exists and create it if it does not exist?

Back 45

'w'

Front 46

In Python, the variable in the for clause is referred to as the _______ because it is the target of an assignment at the beginning of each loop iteration.

Back 46

Global

Front 47

___________ are used to translate each source code instruction into the appropriate machine language.

Back 47

Compilers

Front 48

A Boolean variable can reference one of two values: ___________________.

Back 48

True or False

Front 49

What is the result of the following statement?
x = random.randint(5,15) * 2

Back 49

A random integer from 5 to 15, multiplied by 2, assigned to the variable x

Front 50

Multiple Boolean expressions can be combined by using a logical operator to create ____________________ expression.

Back 50

Compound

Front 51

Which mode specifier will open a file but will not let you change the file or write to it?

Back 51

'r'

Front 52

A(n) _____________ is a set of instructions that the computer follows to solve a problem.

Back 52

Program

Front 53

What type of loop structure repeats the code based on the value of the Boolean expression?

Back 53

​Condition-controlled loop

Front 54

A(n) ___________ access file is also known as a direct access file.

Back 54

random

Front 55

What type of function can be used to determine whether a number is even or odd?

Back 55

Boolean

Front 56

A value-returning function is ________.

Back 56

a function that will return a value back to the part of the program that called it

Front 57

The Python standard library"s _______ module contains numerous functions that can be used in mathematical calculations.

Back 57

math

Front 58

Which of the following statements causes the interpreter to load the contents of the random module into memory?

Back 58

import random

Front 59

The __________ coding scheme contains a set of 128 numeric codes that are used to represent characters in the computer memory.

Back 59

ASCII

Front 60

Which language from the following list is referred to as a low-level language?

Back 60

Assembly language

Front 61

The hierarchy shows all the steps that are taken inside a function.

Back 61

False

Front 62

In a value-return function, the value of the expression that follows the key word _________ will be sent back to the part of the program that called the function.

Back 62

return

Front 63

What type of loop structure repeats the code a specific number of times?

Back 63

Count-controlled loop

Front 64

This is a complete instruction that causes the computer to perform some action.

Back 64

Statement

Front 65

What are the values that the variable num contains through the iterations of the following for loop?
for num in range(2, 9, 2)

Back 65

2,4,6,8

Front 66

Which method could be used to convert a numeric value to a string?

Back 66

str

Front 67

What type of value is returned by the functions random and uniform?

Back 67

float

Front 68

__________ is the process of inspecting data that has been input to a program to make sure it is valid before it is used in a computation.

Back 68

input validation

Front 69

Which logical operators perform short-circuit evaluation?

Back 69

or, and

Front 70

Reducing duplication of code is one of the advantages of using a loop structure.

Back 70

True

Front 71

Which of the following represents an example to calculate the sum of the numbers (accumulator)?

Back 71

total += number

Front 72

What is the format for the while clause in Python?

Back 72

while condition :

Front 73

These operators connect two or more relational expressions into one, or reverse the logic of an expression

Back 73

logical

Front 74

Which of the following will assign a random number in the range of 1 through 50 to the variable number?

Back 74

number = random.randint(1, 50)

Front 75

Which step creates a connection between a file and a program?

Back 75

Open the file.

Front 76

Both of the following for clauses would generate the same number of loop iterations:
for num in range(4):
for num in range(1,5):

Back 76

True

Front 77

Closing a file disconnects the communication between the file and the program.

Back 77

True

Front 78

Which method could be used to strip specific characters from the end of a string?

Back 78

rstrip

Front 79

When will the following loop terminate?
while keep_on_going != 999 :

Back 79

When keep_on_going refers to a value equal to 999.

Front 80

In Python, an infinite loop usually occurs when the computer accesses the wrong memory address.

Back 80

False

Front 81

Python comes with _________ functions that have been already prewritten for the programmer.

Back 81

standard

Front 82

Three primary activities of a program are:

Back 82

input, processing, and output

Front 83

An example of a secondary storage device is:

Back 83

​a hard disk

Front 84

The statements written by the programmer are called:

Back 84

Source Code

Front 85

What is not an example of an augmented assignment operator?

Back 85

<=

Front 86

The randrange function returns a randomly selected value from a specific sequence of numbers.

Back 86

True

Front 87

What type of file access jumps directly to any piece of data in a file without reading the data that came before it?

Back 87

Random

Front 88

In Python, an infinite loop usually occurs when the computer accesses the wrong memory address.

Back 88

False

Front 89

Computer programs are also known as:

Back 89

software

Front 90

Which of the following is the correct if clause to determine whether y is in the range 10 through 50?

Back 90

if y > 10 or y < 50

Front 91

The computer's main memory is commonly known as:

Back 91

RAM

Front 92

This is a set of rules that must be followed when constructing a program.

Back 92

Syntax

Front 93

What type of volatile memory is usually used only for temporary storage while running a program?

Back 93

RAM

Front 94

A(n) __________ variable is created inside a function.

Back 94

Local

Front 95

In a menu-driven program, what statement is used to determine and carry out the user's desired action?

Back 95

if-elif-else

Front 96

The first line in the function defintion is known as the function __________.

Back 96

header

Front 97

What does the term hardware refer to?

Back 97

​the physical components that a computer is made of

Front 98

A value-returning function is like a simple function except that when it finishes it returns a value back to the called part of the program.

Back 98

True

Front 99

Which of the following is not an integer?

Back 99

3.0

Front 100

What are the values that the variable num contains through the iterations of the following for loop?
for num in range(4)

Back 100

0. 1, 2, 3