Comp1

Front 1

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

Back 1

total += number

Front 2

What is the format for the while clause in Python?

Back 2

while condition :

Front 3

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

Back 3

Modules

Front 4

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

Back 4

25

Front 5

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

Back 5

import random

Front 6

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

Back 6

rstrip

Front 7

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

Back 7

random

Front 8

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

Back 8

When keep_on_going refers to a value equal to 999.

Front 9

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

Back 9

Accumulator

Front 10

A value-returning function is ________.

Back 10

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

Front 11

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

Back 11

float

Front 12

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

Back 12

read

Front 13

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

Back 13

Reading data

Front 14

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

Back 14

'w'

Front 15

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

Back 15

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

Front 16

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

Back 16

Repetition

Front 17

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

Back 17

0. 1, 2, 3

Front 18

__________ 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 18

input validation

Front 19

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 19

return

Front 20

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

Back 20

str

Front 21

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

Back 21

'r'

Front 22

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 22

2,4,6,8

Front 23

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

Back 23

number = random.randint(1, 50)

Front 24

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

Back 24

Boolean

Front 25

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

Back 25

Random

Front 26

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

Back 26

standard

Front 27

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 27

customer.write('Mary Smith')

Front 28

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

Back 28

Open the file.

Front 29

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

Back 29

Count-controlled loop

Front 30

What is not an example of an augmented assignment operator?

Back 30

<=

Front 31

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

Back 31

interpreter

Front 32

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

Back 32

if-elif-else

Front 33

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

Back 33

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

Front 34

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

Back 34

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

Front 35

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

Back 35

math

Front 36

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 36

True

Front 37

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 37

True

Front 38

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 38

True

Front 39

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

Back 39

True

Front 40

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

Back 40

True

Front 41

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 41

True

Front 42

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

Back 42

True

Front 43

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

Back 43

False

Front 44

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

Back 44

False

Front 45

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 45

False

Front 46

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

Back 46

False

Front 47

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

Back 47

False

Front 48

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 48

True

Front 49

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

Back 49

True

Front 50

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

Back 50

True