Week 7

Question 1

Invalid indexes do not cause slicing expressions to raise an exception.

Answer 1

True

Question 2

Lists are dynamic data structures such that items may be added to them or removed from them.

Answer 2

True

Question 3

Arrays, which are allowed by most other programming languages, have more capabilities than Python list structures.

Answer 3

False

Question 4

A list cannot be passed as an argument to a function.

Answer 4

False

Question 5

The remove method removes all occurrences of an item from a list.

Answer 5

False

Question 6

The sort method rearranges the elements of a list so they are in ascending or descending order.

Answer 6

False

Question 7

The index of the first element in a list is 1, the index of the second element is 2, and so forth.

Answer 7

False

Question 8

The index -1 identifies the last element in a list.

Answer 8

True

Question 9

To calculate the average of the numeric values in a list, the first step is to get the total of values in the list.

Answer 9

True

Question 10

In slicing, if the end index specifies a position beyond the end of the list, Python will use the length of the list instead.

Answer 10

True

Question 11

What are the data items in a list called?
a. data
b. elements
c. items
d. values

Answer 11

b. elements

Question 12

When working with multiple sets of data, one would typically use a(n)
a. list
b. tuple
c. nested list
d. sequence

Answer 12

c. nested list

Question 13

The primary difference between a tuple and a list is that
a. you don’t use commas to separate elements in a tuple
b. a tuple can only include string elements
c. a tuple cannot include lists as elements
d. once a tuple is created, it cannot be changed

Answer 13

d. once a tuple is created, it cannot be changed

Question 14

What is an advantage of using a tuple rather than a list?
a. Tuples are not limited in size.
b. Tuples can include any data as an element.
c. Processing a tuple is faster than processing a list.
d. There is never an advantage to using a tuple.

Answer 14

c. Processing a tuple is faster than processing a list.

Question 15

Which list will be referenced by the variable number after the following code is executed?
number = range(0, 9, 2)
a. [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
b. [1, 3, 5, 7, 9]
c. [2, 4, 6, 8]
d. [0, 2, 4, 6, 8]

Answer 15

d. [0, 2, 4, 6, 8]

Question 16

Which of the following would you use if an element is to be removed from a specific index?
a. a del statement
b. a remove method
c. an index method
d. a slice method

Answer 16

a. del statement

Question 17

What is the first negative index in a list?
a. 0
b. -1
c. -0
d. the size of the list minus 1

Answer 17

b. -1

Question 18

Which method can be used to place an item at a specific index in a list?
a. append
b. index
c. insert
d. add

Answer 18

c. insert

Question 19

Which method or operator can be used to concatenate lists?
a. *
b. +
c. %
d. concat

Answer 19

b. +

Question 20

Which method can be used to convert a list to a tuple?
a. append
b. tuple
c. insert
d. list

Answer 20

b. tuple

Question 21

Which method can be used to convert a tuple to a list?
a. append
b. tuple
c. insert
d. list

Answer 21

d. list

Question 22

What will be the value of the variable list after the following code executes?
list = [1, 2]
list = list * 3
a. [1, 2] * 3
b. [3, 6]
c. [1, 2, 1, 2, 1, 2]
d. [1, 2], [1, 2], [1, 2]

Answer 22

c. [1, 2, 1, 2, 1, 2]

Question 23

What will be the value of the variable list after the following code executes?
list = [1, 2, 3, 4]
list[3] = 10
a. [1, 2, 3, 10]
b. [1, 2, 10, 4]
c. [1, 10, 10, 10]
d. Nothing; this code is invalid

Answer 23

a. [1, 2, 3, 10]

Question 24

What will be the value of the variable list2 after the following code executes?
list1 = [1, 2, 3]
list2 = []
for element in list1:
list2.append(element)
list1 = [4, 5, 6]
a. [1, 2, 3]
b. [4, 5, 6]
c. [1, 2, 3, 4, 5, 6]
d. Nothing; this code is invalid

Answer 24

a. [1, 2, 3]

Question 25

What will be the value of the variable list2 after the following code executes?
list1 = [1, 2, 3]
list2 = []
list1 = [4, 5, 6]
a. [1, 2, 3]
b. [4, 5, 6]
c. [1, 2, 3, 4, 5, 6]
d. Nothing; this code is invalid

Answer 25

b. [4, 5, 6]

Question 26

A(n) __________ is an object that holds multiple items of data.

Answer 26

sequence

Question 27

Each element in a tuple has a(n) __________ that specifies its position in the tuple.

Answer 27

index

Question 28

The built-in function __________ returns the length of a sequence.

Answer 28

len

Question 29

Tuples are __________ sequences which means that once a tuple is created, it cannot be changed.

Answer 29

immutable

Question 30

A(n) ___________ is a span of items that are taken from a sequence.

Answer 30

slice

Question 31

Lists are ___________, which means their elements can be changed in a program.

Answer 31

mutable

Question 32

The __________ method is commonly used to add items to a list.

Answer 32

append

Question 33

The __________ exception is raised when a search item is not in the list being searched.

Answer 33

ValueError

Question 34

The __________ method reverses the order of the items in a list.

Answer 34

reverse

Question 35

The __________ function returns the item that has the lowest value in the sequence.

Answer 35

min

Question 36

The ___________ function can be used to convert a list to a tuple.