Question 1

The == operator returns True if the variables are aliases for the same object. Unfortunately, == returns False if the contents of two different objects are the same.

Accepted Answer

A) True 
 B)False

Question 2

What is the return value for a function that has no return statement defined?

Accepted Answer

A)   The function will return a value of False.
B)   The function will return a value of True, provided there are no errors.
C)   The function will return a NULL value.
D)   The function will return a special value of None.E) None of the above
F) C) and D)

Question 3

In computer science, what are two names that are used to describe data structures organized by association? (Choose two.)

Accepted Answer

A)   matrices
B)   tables
C)   association lists
D)   family treesE) A) and C)
F) All of the above

Question 4

The index of the first item in a list is 1.

Accepted Answer

A) True 
 B)False

Question 5

What statement accurately describes the difference between a list and a tuple?

Accepted Answer

A)   A list is immutable, while a tuple is not.
B)   A list is created with elements in parentheses, while a tuple is created with square brackets.
C)   A tuple's contents cannot be changed.
D)   A tuple can only hold integer and float data.E) A) and B)
F) B) and C)

Question 6

What method should you utilize to add the elements of list2 onto the end of list1?

Accepted Answer

A)   list1.extend(list2) 
B)   list1.append(list2) 
C)   list2.append(list1) 
D)   list2.extend(list1) E) A) and D)
F) A) and C)

Question 7

You add a new key/value pair to a dictionary by using the subscript operator [].

Accepted Answer

A) True 
 B)False  True

Question 8

If pop is used with just one argument and this key is absent from the dictionary, Python raises an error.

Accepted Answer

A) True 
 B)False

Question 9

You are creating a Python script that will make use of user input contact names and their associated phone numbers. What would be ideal for storing and accessing these associated values?

Accepted Answer

A)   lists
B)   tuples
C)   dictionaries
D)   stringsE) None of the above
F) All of the above

Question 10

You are designing a script that may be imported as a module in other scripts. What variable can you use to check whether the script has been imported as a module, or is running as the main script?

Accepted Answer

A)   __parent__
B)   __name__
C)   __operating_mode__
D)   __status__E) A) and D)
F) None of the above B

Question 11

What list method should you use in order to remove and return the element at the end of the list named "books"?

Accepted Answer

A)   books.get() 
B)   books.pop() 
C)   books.fetch() 
D)   books.pull() E) A) and D)
F) A) and C) B

Question 12

What statement accurately describes the use of a parameter in Python?

Accepted Answer

A)   A parameter is the name used in the function definition for an argument that is passed to the function when it is called.
B)   A parameter is the name used for a function that is then referenced by other parts of the program.
C)   A parameter is the name used for data that is returned from the execution of a function.
D)   A parameter is the name given to an acceptable range of values that are output from a program.E) None of the above
F) B) and C)

Question 13

What dictionary operation can you use to remove all the keys within the dictionary named contacts?

Accepted Answer

A)   contacts.delete() 
B)   contacts.remove() 
C)   contacts.clear() 
D)   contacts.dump() E) A) and B)
F) B) and C)

Question 14

The main function usually expects no arguments and returns no value.

Accepted Answer

A) True 
 B)False

Question 15

What statement accurately describes what a mutator is in the Python language?

Accepted Answer

A)   A mutator is a method that converts immutable data into mutable data.
B)   A mutator is a method used to encrypt text.
C)   A mutator is a method that is devoted entirely to the modification of the internal state of an object.
D)   A mutator is a method that changes the structure of a block of Python code.E) All of the above
F) B) and D)

Question 16

What statement regarding the use of lists is accurate?

Accepted Answer

A)   The individual elements within a list are immutable, in that the values cannot be changed.
B)   Two lists cannot be concatenated together, without the creation of a third list.
C)   A list can be sliced into sublists.
D)   When a list is evaluated, the elements are not evaluated.E) B) and D)
F) C) and D)

Question 17

When creating a list of items whose structure will not change, what should you ideally use to contain the values?

Accepted Answer

A)   lists
B)   tuples
C)   dictionaries
D)   stringsE) B) and C)
F) All of the above

Question 18

Lists of integers can be built using the range function.

Accepted Answer

A) True 
 B)False

Question 19

Anytime you foresee using a list whose structure will not change, you can, and should, use a tuple instead.

Accepted Answer

A) True 
 B)False

Question 20

What operator should you utilize if you wish to test for object identity between two objects?

Accepted Answer

A)   ==
B)   is
C)   !=
D)   @!E) A) and D)
F) A) and C)

Exam 5: Lists and Dictionaries

The == operator returns True if the variables are aliases for the same object. Unfortunately, == returns False if the contents of two different objects are the same.

Correct AnswerverifiedShow Answer

What is the return value for a function that has no return statement defined?

Correct AnswerverifiedShow Answer

In computer science, what are two names that are used to describe data structures organized by association? (Choose two.)

Correct AnswerverifiedShow Answer

The index of the first item in a list is 1.

Correct AnswerverifiedShow Answer

What statement accurately describes the difference between a list and a tuple?

Correct AnswerverifiedShow Answer

What method should you utilize to add the elements of list2 onto the end of list1?

Correct AnswerverifiedShow Answer

You add a new key/value pair to a dictionary by using the subscript operator [].

Correct AnswerverifiedTrue

If pop is used with just one argument and this key is absent from the dictionary, Python raises an error.

Correct AnswerverifiedShow Answer

You are creating a Python script that will make use of user input contact names and their associated phone numbers. What would be ideal for storing and accessing these associated values?

Correct AnswerverifiedShow Answer

You are designing a script that may be imported as a module in other scripts. What variable can you use to check whether the script has been imported as a module, or is running as the main script?

Correct AnswerverifiedB

What list method should you use in order to remove and return the element at the end of the list named "books"?

Correct AnswerverifiedB

What statement accurately describes the use of a parameter in Python?

Correct AnswerverifiedShow Answer

What dictionary operation can you use to remove all the keys within the dictionary named contacts?

Correct AnswerverifiedShow Answer

The main function usually expects no arguments and returns no value.

Correct AnswerverifiedShow Answer

What statement accurately describes what a mutator is in the Python language?

Correct AnswerverifiedShow Answer

What statement regarding the use of lists is accurate?

Correct AnswerverifiedShow Answer

When creating a list of items whose structure will not change, what should you ideally use to contain the values?

Correct AnswerverifiedShow Answer

Lists of integers can be built using the range function.

Correct AnswerverifiedShow Answer

Anytime you foresee using a list whose structure will not change, you can, and should, use a tuple instead.

Correct AnswerverifiedShow Answer

What operator should you utilize if you wish to test for object identity between two objects?

Correct AnswerverifiedShow Answer

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