Question 1

The __iter__ method uses a yield statement to send each item to the calling for loop.

Accepted Answer

A) True 
 B)False

Question 2

When defining the Bag class, the __init__ operation is the constructor for the class.

Accepted Answer

A) True 
 B)False

Question 3

You should always try to hide the implementing data structures behind a wall of method calls on the object being implemented.

Accepted Answer

A) True 
 B)False

Question 4

In the Bag class defined in the chapter, what is one of the purposes of the sourceCollection argument in the __init__ method?

Accepted Answer

A)  to create a bag with the contents of another collection 
B)  to delete the contents of an existing collection 
C)  to define source code for the method 
D)  to add data to an existing bag collection 
A)  to create a bag with the contents of another collection 
B)  to delete the contents of an existing collection 
C)  to define source code for the method 
D)  to add data to an existing bag collection

Question 5

What is it called when the contents of two bags are combined into a third bag?

Accepted Answer

A)  iteration 
B)  appending 
C)  concatenation 
D)  reduction 
A)  iteration 
B)  appending 
C)  concatenation 
D)  reduction

Question 6

Software bags can grow as more items are added, or they can shrink as items are removed.

Accepted Answer

A) True 
 B)False

Question 7

Once the designer of a collection class has obtained its interface, the implementation of the class includes completing code for the methods.

Accepted Answer

A) True 
 B)False

Question 8

The running times of the operations of ArrayBag and LinkedBag are similar.

Accepted Answer

A) True 
 B)False

Question 9

Why won't some of the ArrayBag methods require changes when implementing the LinkedBag class?

Accepted Answer

A)  because the methods don't use the self variable 
B)  because the ArrayBag class is based on lists 
C)  because the LinkedBag object is not iterable 
D)  because the methods don't directly access the array variable 
A)  because the methods don't use the self variable 
B)  because the ArrayBag class is based on lists 
C)  because the LinkedBag object is not iterable 
D)  because the methods don't directly access the array variable

Question 10

When used with a bag object, the in operator returns an integer value.

Accepted Answer

A) True 
 B)False

Question 11

In the ArrayBag class, why must the ArrayBag object track its logical size in a separate instance variable?

Accepted Answer

A)  because the physical size is always smaller than the logical size 
B)  because the initial size of the object can't be changed 
C)  because the logical size will likely differ from the array's capacity 
D)  because the array size and the logical size are identical 
A)  because the physical size is always smaller than the logical size 
B)  because the initial size of the object can't be changed 
C)  because the logical size will likely differ from the array's capacity 
D)  because the array size and the logical size are identical

Question 12

The __iter__ method is identical in the ArrayBag and LinkedBag classes.

Accepted Answer

A) True 
 B)False

Question 13

Which of the following is a visual aid to help catalog resources in your software toolbox?

Accepted Answer

A)  docstring 
B)  method mapper 
C)  unit modeler 
D)  class diagram 
A)  docstring 
B)  method mapper 
C)  unit modeler 
D)  class diagram

Question 14

The statement in the ArrayBag constructor to copy an item from a source collection to a new ArrayBag object is self.init(item) .

Accepted Answer

A) True 
 B)False

Question 15

What word is best defined as the use of common names for operations on different types of collections?

Accepted Answer

A)  anachronism 
B)  polymorphism 
C)  concatenation 
D)  modularization 
A)  anachronism 
B)  polymorphism 
C)  concatenation 
D)  modularization

Question 16

In the ArrayBag class, what function does the __str__ method use to generate a sequence of strings from a bag?

Accepted Answer

A)  count 
B)  len 
C)  add 
D)  map 
A)  count 
B)  len 
C)  add 
D)  map

Question 17

An interface's documentation gives you enough information to know how to use or call a method and what to expect it to accomplish and return.

Accepted Answer

A) True 
 B)False

Question 18

A bag is a type of ordered collection.

Accepted Answer

A) True 
 B)False

Question 19

The clear method empties a bag.

Accepted Answer

A) True 
 B)False

Question 20

Whenever you need to use the logical size of the bag within a class definition, run len(self) instead of referring directly to the instance variable self.size .

Accepted Answer

A) True 
 B)False

The iter method uses a yield statement to send each item to the calling for loop.

When defining the Bag class, the init operation is the constructor for the class.

You should always try to hide the implementing data structures behind a wall of method calls on the object being implemented.

In the Bag class defined in the chapter, what is one of the purposes of the sourceCollection argument in the init method?

What is it called when the contents of two bags are combined into a third bag?

Software bags can grow as more items are added, or they can shrink as items are removed.

Once the designer of a collection class has obtained its interface, the implementation of the class includes completing code for the methods.

The running times of the operations of ArrayBag and LinkedBag are similar.

Why won't some of the ArrayBag methods require changes when implementing the LinkedBag class?

When used with a bag object, the in operator returns an integer value.

In the ArrayBag class, why must the ArrayBag object track its logical size in a separate instance variable?

The iter method is identical in the ArrayBag and LinkedBag classes.

Which of the following is a visual aid to help catalog resources in your software toolbox?

The statement in the ArrayBag constructor to copy an item from a source collection to a new ArrayBag object is self.init(item) .

What word is best defined as the use of common names for operations on different types of collections?

In the ArrayBag class, what function does the str method use to generate a sequence of strings from a bag?

An interface's documentation gives you enough information to know how to use or call a method and what to expect it to accomplish and return.

A bag is a type of ordered collection.

The clear method empties a bag.

Whenever you need to use the logical size of the bag within a class definition, run len(self) instead of referring directly to the instance variable self.size .

Basic Python Programming

An Overview of Collections

Searching, Sorting, and Complexity Analysis

Arrays and Linked Structures

Inheritance and Abstract Classes

Stacks

Queues

Lists

Trees

Sets and Dictionaries

Graphs

Filters

Exam 5: Interfaces, Implementations, and Polymorphism

The __iter__ method uses a yield statement to send each item to the calling for loop.

When defining the Bag class, the __init__ operation is the constructor for the class.

You should always try to hide the implementing data structures behind a wall of method calls on the object being implemented.

In the Bag class defined in the chapter, what is one of the purposes of the sourceCollection argument in the __init__ method?

What is it called when the contents of two bags are combined into a third bag?

Software bags can grow as more items are added, or they can shrink as items are removed.

Once the designer of a collection class has obtained its interface, the implementation of the class includes completing code for the methods.

The running times of the operations of ArrayBag and LinkedBag are similar.

Why won't some of the ArrayBag methods require changes when implementing the LinkedBag class?

When used with a bag object, the in operator returns an integer value.

In the ArrayBag class, why must the ArrayBag object track its logical size in a separate instance variable?

The __iter__ method is identical in the ArrayBag and LinkedBag classes.

Which of the following is a visual aid to help catalog resources in your software toolbox?

The statement in the ArrayBag constructor to copy an item from a source collection to a new ArrayBag object is self.init(item) .

What word is best defined as the use of common names for operations on different types of collections?

In the ArrayBag class, what function does the __str__ method use to generate a sequence of strings from a bag?

An interface's documentation gives you enough information to know how to use or call a method and what to expect it to accomplish and return.

A bag is a type of ordered collection.

The clear method empties a bag.

Whenever you need to use the logical size of the bag within a class definition, run len(self) instead of referring directly to the instance variable self.size .

Basic Python Programming

An Overview of Collections

Searching, Sorting, and Complexity Analysis

Arrays and Linked Structures

Inheritance and Abstract Classes

Stacks

Queues

Lists

Trees

Sets and Dictionaries

Graphs

Filters

The iter method uses a yield statement to send each item to the calling for loop.

When defining the Bag class, the init operation is the constructor for the class.

In the Bag class defined in the chapter, what is one of the purposes of the sourceCollection argument in the init method?

The iter method is identical in the ArrayBag and LinkedBag classes.

In the ArrayBag class, what function does the str method use to generate a sequence of strings from a bag?