Question 1

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 2

The difference of set1 and aet2 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 3

Which would you use to get the number of elements in a dictionary?

Accepted Answer

A)   size
B)   length
C)   len
D)   sizeof

Question 4

A(n)__________ is an object that holds multiple unique items of data in an unordered manner.

Accepted Answer

The answer of A(n)__________ is an object that holds multiple...

Question 5

To write an object to a file,you use the __________ function of the __________ module.

Accepted Answer

The answer of To write an object to a file,you...

Question 6

What does the get method do if the specified key is not found in the dictionary?

Accepted Answer

A)   It throws an exception.
B)   It does nothing.
C)   It returns a default value.
D)   You cannot use the get method to specify a key.

Question 7

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

Accepted Answer

The answer of The built-in function,__________,returns the number of items...

Question 8

Sets are created using curly braces { }.

Accepted Answer

A) True 
 B)False

Question 9

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

Accepted Answer

A)   included
B)   in
C)   isnotin
D)   isin

Question 10

The union of two sets is a set that contains only the elements that appear in both sets.

Accepted Answer

A) True 
 B)False  False

Question 11

Which method would you use to get the value associated with a specific key and remove that key-value pair from the dictionary?

Accepted Answer

A)   list
B)   items
C)   pop
D)   popitem

Question 12

What will be the result of the following code?
Ages = {'Aaron' : 6,'Kelly' : 3,'Abigail' : 1 }
Value = ages['Brianna']

Accepted Answer

A)   False
B)   -1
C)   0
D)   KeyError

Question 13

What is the number of the first index in a dictionary?

Accepted Answer

A)   0
B)   1
C)   the size of the dictionary minus one
D)   Dictionaries are not indexed by number.

Question 14

What is the value of the variable phones after the following code executes?
Phones = {'John' : '5555555','Julie' : '5557777'}
Phones['John'] = 5556666'

Accepted Answer

A)   {'John' : '5555555', 'Julie' : '5557777'}
B)   {'John' : '5556666', 'Julie' : '5557777'}
C)   {'John' : '5556666'}
D)   This code is invalid.

Question 15

Sets are immutable.

Accepted Answer

A) True 
 B)False

Question 16

The __________ method returns all of a dictionary's keys as a dictionary view.

Accepted Answer

The answer of The __________ method returns all of a...

Question 17

Which would you use to delete an existing key-value pair from a dictionary?

Accepted Answer

A)   del
B)   remove
C)   delete
D)   unpair

Question 18

A dictionary can include the same value several times but cannot include the same key several times.

Accepted Answer

A) True 
 B)False  True

Question 19

What is the correct structure to create a dictionary of months where each month will be accessed by its month number (for example,January is month 1,April is month 4) ?

Accepted Answer

A)   { 1 ; 'January', 2 ; 'February', ... 12 ; 'December'}
B)   { 1 : 'January', 2 : 'February', ... 12 : 'December' }
C)   [ '1' : 'January', '2' : 'February', ... '12' : 'December' ]
D)   { 1, 2,... 12 : 'January', 'February',... 'December' } B

Question 20

You would typically use a for loop to iterate over the elements in a set.

Accepted Answer

A) True 
 B)False

Exam 9: Dictionaries and Sets

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

Correct AnswerverifiedShow Answer

The difference of set1 and aet2 is a set that contains only the elements that appear in set1 but do not appear in set2.

Correct AnswerverifiedShow Answer

Which would you use to get the number of elements in a dictionary?

Correct AnswerverifiedShow Answer

A(n)__________ is an object that holds multiple unique items of data in an unordered manner.

Correct AnswerverifiedShow Answer

To write an object to a file,you use the __________ function of the __________ module.

Correct AnswerverifiedShow Answer

What does the get method do if the specified key is not found in the dictionary?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Sets are created using curly braces { }.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

The union of two sets is a set that contains only the elements that appear in both sets.

Correct AnswerverifiedFalse

Which method would you use to get the value associated with a specific key and remove that key-value pair from the dictionary?

Correct AnswerverifiedShow Answer

What will be the result of the following code? Ages = {'Aaron' : 6,'Kelly' : 3,'Abigail' : 1 } Value = ages['Brianna']

Correct AnswerverifiedShow Answer

What is the number of the first index in a dictionary?

Correct AnswerverifiedShow Answer

What is the value of the variable phones after the following code executes? Phones = {'John' : '5555555','Julie' : '5557777'} Phones['John'] = 5556666'

Correct AnswerverifiedShow Answer

Sets are immutable.

Correct AnswerverifiedShow Answer

The __________ method returns all of a dictionary's keys as a dictionary view.

Correct AnswerverifiedShow Answer

Which would you use to delete an existing key-value pair from a dictionary?

Correct AnswerverifiedShow Answer

A dictionary can include the same value several times but cannot include the same key several times.

Correct AnswerverifiedTrue

What is the correct structure to create a dictionary of months where each month will be accessed by its month number (for example,January is month 1,April is month 4) ?

Correct AnswerverifiedB

You would typically use a for loop to iterate over the elements in a set.

Correct AnswerverifiedShow Answer

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To write an object to a file,you use the function of the module.

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False

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True

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B

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