Sequences and lists

Question 1

The _____ method can be used to add an item at a specific index in a list.

insert
add
index
append

Answer 1

insert

Question 2

Which list will be referenced by the variable number after the following code is executed

number=list(range(1,9,2))

[1,3,5,7,9]
[1,9,2]
[1,3,5,7]
[2,4,6,8]

Answer 2

[1,3,5,7]

Question 3

The index() method is used to sort the elements of the list in ascending order.

TRUE
FALSE

Answer 3

FALSE

Question 4

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

TRUE
FALSE

Answer 4

TRUE

Question 5

The slicing operations always create a new sequence. They never modify the original sequence.

TRUE
FALSE

Answer 5

TRUE

Question 6

What will be the value of the variable x after the following code executes?

x = [11, 12, 13, 14]
x [-2] = 10

[11, 12, 13, -2]

[11, 12, 10, 14]

[11, 12, -2, 10]

[11, 12, 13, 10]

Answer 6

[11, 12, 10, 14]

Question 7

Each element in a list has an index that specifies its position in the list.

TRUE
FALSE

Answer 7

TRUE

Question 8

Lists in Python are mutable.

TRUE
FALSE

Answer 8

TRUE

Question 9

A sequence is an object that contains multiple items of data.

TRUE
FALSE

Answer 9

TRUE

Question 10

The primary difference between a tuple and a list is that

a tuple cannot include lists as elements.
a tuple can only include string elements.
once a tuple is created, it cannot be changed.
commas cannot be used to separate elements in a tuple.

Answer 10

once a tuple is created, it cannot be changed.

Question 11

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

TRUE
FALSE

Answer 11

TRUE

Question 12

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

TRUE
FALSE

Answer 12

FALSE

Question 13

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

TRUE
FALSE

Answer 13

FALSE

Question 14

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

TRUE
FALSE

Answer 14

TRUE

Question 15

What is an advantage of using a tuple rather than a list?

Tuples are not limited in size.
There is never an advantage to using a tuple.
Processing a tuple is faster than processing a list.
Tuples can include any data as an element.

Answer 15

Processing a tuple is faster than processing a list.

Question 16

Which of the following would you use if an element is to be removed from a specific index?

a del statement
a slice method
a remove method
an index method

Answer 16

a del statement

Question 17

What is the first negative index in a list?

the size of the list minus 1
0
-0
-1

Answer 17

-1

Question 18

Which method or operator can be used to concatenate lists?

concat
*
\+
%

Answer 18

+

Question 19

What will be the value of the variable list after the following code executes?

list = [1, 2]
list = list * 3

[3, 6]
[1, 2], [1, 2], [1, 2]
[1, 2] * 3
[1, 2, 1, 2, 1, 2]

Answer 19

[1, 2, 1, 2, 1, 2]

Question 20

What will be the value of the variable list after the following code executes?

list = [1, 2, 3, 4]
list[3] = 10

[1, 2, 10, 4]
[1, 2, 3, 10]
Nothing; this code is invalid
[1, 10, 10, 10]

Answer 20

[1, 2, 3, 10]

Question 21

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]

[4, 5, 6]
Nothing; this code is invalid
[1, 2, 3, 4, 5, 6]
[1, 2, 3]

Answer 21

[1, 2, 3]