Question 1

The index of the first key-value pair in a dictionary is 0.

Accepted Answer

A) True 
 B)False

Question 2

The elements in a dictionary are not stored in a specific order. Therefore a dictionary is not a(n) _______________.

Accepted Answer

The answer of The elements in a dictionary are not...

Question 3

What method can be used to add a group of elements to a set?

Accepted Answer

A)   add
B)   addgroup
C)   update
D)   Elements must be added one at a time.E) A) and B)
F) A) and C)

Question 4

The difference of set1 and set2 is a set that contains only the elements that appear in set1 but do not appear in set2.

Accepted Answer

A) True 
 B)False

Question 5

In order to avoid KeyError exceptions, you can check whether a key is in the dictionary using the _____ operator.

Accepted Answer

A)   included
B)   of
C)   in
D)   not inE) All of the above
F) C) and D)

Question 6

Which method would you use to returns all the elements in the dictionary as a list of tuples?

Accepted Answer

A)   list
B)   items
C)   pop
D)   keysE) A) and B)
F) B) and C)

Question 7

What is the correct structure for creating a dictionary of month names to be accessed by month numbers?

Accepted Answer

A)   { 1 ; 'January', 2 ; 'February', 3 ; 'March' }
B)   { 1 : 'January', 2 : 'February', 3 : 'March' }
C)   [ 1 : 'January', 2 : 'February', 3 : 'March' ]
D)   { 1, 2, 3 : 'January', 'February', 'March' }E) A) and B)
F) A) and C)

Question 8

The set remove and discard methods behave differently only when a specified item is not found in the set.

Accepted Answer

A) True 
 B)False

Question 9

What is the value of the variable phones after the execution of the following code?
Phones = {'John': '5555555', 'Julie' : '7777777'}
Phones['John'] = '1234567'

Accepted Answer

A)   {'John': '5555555', 'Julie' : '7777777'}
B)   {'John': '1234567', 'Julie' : '7777777'}
C)   {'John': '1234567' }
D)   invalid codeE) A) and B)
F) B) and D)

Question 10

You created the following dictionary relationships = {'Jimmy':'brother'}. You then executed the following code, and received a KeyError exception. What is the reason for the exception?
Relationships['jimmy']

Accepted Answer

A)   String comparisons are case sensitive so 'jimmy' does not equal 'Jimmy'.
B)   You used the wrong syntax for creating the dictionary.
C)   You should have used the code relationships['brother'].
D)   There is a bug in Python.E) A) and B)
F) All of the above

Question 11

The _______________ method returns a value associated with a specified key and if found, removes that key-value pair from the dictionary.

Accepted Answer

The answer of The _______________ method returns a value associated...

Question 12

The built-in function _______________ returns the number of items in a set.

Accepted Answer

The answer of The built-in function _______________ returns the number...

Question 13

To determine whether a key is not included in a dictionary, or an element is not included in a set, you can use the _______________ operator.

Accepted Answer

The answer of To determine whether a key is not...

Question 14

The _______________ of two sets is a set that contains all the elements of both sets.

Accepted Answer

The answer of The _______________ of two sets is a...

Question 15

The issubset method can be used to determine whether set1 is a subset of set2.

Accepted Answer

A) True 
 B)False

Exam 9: Dictionaries and Sets

In order to avoid KeyError exceptions, you can check whether a key is in the dictionary using the _____ operator.

Correct Answer
verified

The index of the first key-value pair in a dictionary is 0.

Correct Answer
verified

The elements in a dictionary are not stored in a specific order. Therefore a dictionary is not a(n) _______________.

Correct Answer
verified

What method can be used to add a group of elements to a set?

Correct Answer
verified

What is the correct structure for creating a dictionary of month names to be accessed by month numbers?

Correct Answer
verified

To determine whether a key is not included in a dictionary, or an element is not included in a set, you can use the _______________ operator.

Correct Answer
verified

You created the following dictionary relationships = {'Jimmy':'brother'}. You then executed the following code, and received a KeyError exception. What is the reason for the exception? Relationships['jimmy']

Correct Answer
verified

The issubset method can be used to determine whether set1 is a subset of set2.

Correct Answer
verified

The _______________ method returns a value associated with a specified key and if found, removes that key-value pair from the dictionary.

Correct Answer
verified

The _______________ of two sets is a set that contains all the elements of both sets.

Correct Answer
verified

What is the value of the variable phones after the execution of the following code? Phones = {'John': '5555555', 'Julie' : '7777777'} Phones['John'] = '1234567'

Correct Answer
verified

The difference of set1 and set2 is a set that contains only the elements that appear in set1 but do not appear in set2.

Correct Answer
verified

The set remove and discard methods behave differently only when a specified item is not found in the set.

Correct Answer
verified

The built-in function _______________ returns the number of items in a set.

Correct Answer
verified

Which method would you use to returns all the elements in the dictionary as a list of tuples?

Correct Answer
verified

Exam 9: Dictionaries and Sets

In order to avoid KeyError exceptions, you can check whether a key is in the dictionary using the _____ operator.

Correct AnswerverifiedShow Answer

The index of the first key-value pair in a dictionary is 0.

Correct AnswerverifiedShow Answer

The elements in a dictionary are not stored in a specific order. Therefore a dictionary is not a(n) _______________.

Correct AnswerverifiedShow Answer

What method can be used to add a group of elements to a set?

Correct AnswerverifiedShow Answer

What is the correct structure for creating a dictionary of month names to be accessed by month numbers?

Correct AnswerverifiedShow Answer

To determine whether a key is not included in a dictionary, or an element is not included in a set, you can use the _______________ operator.

Correct AnswerverifiedShow Answer

You created the following dictionary relationships = {'Jimmy':'brother'}. You then executed the following code, and received a KeyError exception. What is the reason for the exception? Relationships['jimmy']

Correct AnswerverifiedShow Answer

The issubset method can be used to determine whether set1 is a subset of set2.

Correct AnswerverifiedShow Answer

The _______________ method returns a value associated with a specified key and if found, removes that key-value pair from the dictionary.

Correct AnswerverifiedShow Answer

The _______________ of two sets is a set that contains all the elements of both sets.

Correct AnswerverifiedShow Answer

What is the value of the variable phones after the execution of the following code? Phones = {'John': '5555555', 'Julie' : '7777777'} Phones['John'] = '1234567'

Correct AnswerverifiedShow Answer

The difference of set1 and set2 is a set that contains only the elements that appear in set1 but do not appear in set2.

Correct AnswerverifiedShow Answer

The set remove and discard methods behave differently only when a specified item is not found in the set.

Correct AnswerverifiedShow Answer

The built-in function _______________ returns the number of items in a set.

Correct AnswerverifiedShow Answer

Which method would you use to returns all the elements in the dictionary as a list of tuples?

Correct AnswerverifiedShow Answer

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