MSBC 5070 (Midterm Review)

Question 1

Fill in the blanks to complete the code that will ask a user for their name and store the result in a variable called, name.

xxxxx=xxxxxx(“What is your name?”)

Answer 1

name=input

Question 2

What does the expression, 9 % 3, evaluate to?

Answer 2

0

Question 3

What is the correct Python function to convert a value to a string

Answer 3

str()

Question 4

Write the code to import the random module:

Answer 4

import random

Question 5

Is the following an assignment or expression: eggs=2

Answer 5

assignment

Question 6

Is the following an assignment or expression: 2

Answer 6

expression

Question 7

What does Python return when the following function is executed?

str(245)

Answer 7

‘245’

Question 8

False and True evaluates to:

Answer 8

False

Question 9

True or False evaluates to:

Answer 9

True

Question 10

Write code that uses a string method to return a Boolean value indicating whether or not a variable, name, is in Title Case format.

Answer 10

name.istitle()

Question 11

What does Python return when the following function is executed?

int(‘245’)

Answer 11

245

Question 12

After the following two lines of python code runs, what is the value of the revenue variable?

revenue = 1000

revenue + 10

Answer 12

1000

Question 13

Given the following variable:

studentGrades = [10, 10, 10, 85, 85, 90, 100, 100,100]

Write the sub list that would be returned by the following code:

studentGrades[2:5]

Answer 13

10,85,85

Question 14

What is the % operator in Python?

Answer 14

Modulus

Question 15

What is the correct Python function to convert a value to a floating-point number.

Answer 15

float()

Question 16

By default, the while loop is an:

A.Entry controlled loop
B.Exit controlled loop

Answer 16

A.

Question 17

Fill in the blanks to complete the python code that will find the remainder when 23 is divided by 3:

Answer 17

23%3

Question 18

Fill in the blanks to complete the code that uses a string method to convert a variable, name, to upper case.

Answer 18

name.upper()

Question 19

Consider the following code segment:

theSum = 0.0
while True:

 number = input("Enter a number: ")
 if number == "":
	        break
	 theSum += float(number)

How many times will the loop run?

A. None
B. At least Once
C. Infinite while loop
D. None of the above

Answer 19

B.

Question 20

True and True and True and False evaluates to:

Answer 20

False

Question 21

Given the following list variable:

studentGrades = [10, 10, 10, 85, 85, 90, 100, 100,100]

What would be returned by the following code:

studentGrades[5]

Answer 21

90

Question 22

In order to prompt for and get a user’s input via the keyboard, which Python function can be used?

Answer 22

input()

Question 23

What can be provided as an argument within the parentheses of the input() function?

A. a string
B. an integar
C. a float
D. a comment

Answer 23

A.

Question 24

Assume variables have these values:

a = -5.94

b = 1

What is the value of abs(round(a, b)) ?

Answer 24

5.9

Question 25

When using the print() function, what named parameter can be used to control what is done after all items are displayed?

A. end
B. delim
C. sep
D. space

Answer 25

A. end

Question 26

Which is not a Python keyword for decision structures:

A. if
B. else
C. elif
D. elselif

Answer 26

D.

Question 27

Which keyword or symbol can be used to form a compound logical expression:
A. &
B. &&
C. and

Answer 27

C. and

Question 28

Assuming reply is a string variable, which is a valid statement?
A.ok = True (reply == ‘y’) False
B.ok = True (reply = ‘y’) False
C.ok = True if (reply == ‘y’) else False
D.ok = if reply == ‘y’ then True else False

Answer 28

C.

Question 29

True or False: An if statement can be nested under another if statement.

Answer 29

True

Question 30

True or False: In combination with an if statement, there can be at most one elif statement.

Answer 30

False

Question 31

What are the values that range(3) will generate?

Answer 31

0,1,2

Question 32

True or False: With repetition, program float may move to a prior statement.

Answer 32

True

Question 33

True or False: Repetition can be used to process different scenarios.

Answer 33

True

Question 34

Which is not a logical operator that can be used in a while statement?
A. <=
B.=<
C.==

Answer 34

B.

Question 35

A program that incorrectly keeps repeating is referred to as having a(n):

Answer 35

Infinite loop

Question 36

What will be displayed when the following program is run?

def div(num, denom, decimals=2):

print(round(num/denom, decimals))

div(1,3, decimals=1)

Answer 36

0.3

Question 37

True or False: The return statement displays the result to the screen.

Answer 37

False

Question 38

True or False: Python allows you to define your own functions.

Answer 38

True

Question 39

The statements indented after the function’s signature is called the:
A. body
B.core
c. functional
d.None of the above

Answer 39

A.body

Question 40

The keyword to begin the definition of a function is:

Answer 40

def

Question 41

True or False:A function cannot call another function.

Answer 41

False

Question 42

If squares = [1, 4, 9, 16, 25], what is the value of squares[1:3] ?

Answer 42

4,9

Question 43

True or False:A tuple’s items can be access by square brackets, similar to lists.

Answer 43

True

Question 44

What is the output of the following program:

alist = [ ]

for i in range(3):

alist.append(i**2)

print(alist)

Answer 44

0,1,4

Question 45

What statement can be used to remove all items from a list named alist?
A.alist.clear()
B.clear(alist)
C.del alist
D.delete alist

Answer 45

A. alist.clear()

Question 46

What is the output of the following:

alist = [1, 4, 9]

sum = 0

for value in alist:

sum += value

print(sum)

Answer 46

14

Question 47

Assuming adict is a dictionary, which is not a valid statement:
A.for adict:
B.for k in addict.keys()
C.for v in addict.keys()
D.for k,v in addict.items()
E. None of the above
F.All the above

Answer 47

A. for adict:

Question 48

What keyword can be used to remove a key and its value from a dictionary?
A.del
B.remove
C.delete
D.update

Answer 48

A.del

Question 49

How can an empty set be created?
A.set()
B.{}
C.emptySet()

Answer 49

A. set()

Question 50

True or False: In contrast with lists, a dictionary cannot be created as empty.

Answer 50

False

Question 51

True or False: As compared with a dictionary, a list is designed to be faster for lookup by a key.

Answer 51

False

Question 52

True or False: Slicing alters the original string, as opposed to creating a new string.

Answer 52

False

Question 53

Which string method returns either True or False ?
A.startswith()
B.find()
C.rfind()
D.count()

Answer 53

A.startswith()

Question 54

In a string slice, what is assumed if the position after the colon is omitted, for example like s[1:] ?
A.The slice ends at position 1
B.The slice ends at the last position of the original string
C.The slice is the same as the original string
D.an error will be generated

Answer 54

B.

Question 55

If s=’Hello’, what is returned by s.count(‘l’) ?

Answer 55

2

Question 56

What is the difference between the string methods strip() and rstrip()?
A.These are different names but behave the same
B.strip() returns a result that removes leading and trailing whitespace; rstrip() returns a result that removes trailing whitespace.
C.strip() removes whitespace, rstrip() removes the \r character.

Answer 56

B.