Question 1

Python has a built-in type for rational numbers called rational.

Accepted Answer

A) True 
 B)False

Question 2

The str method is a good example of a polymorphic method that appears throughout Python's system of classes.

Accepted Answer

A) True 
 B)False

Question 3

In the context of Python objects, what does the pickling process do?

Accepted Answer

A)  It preserves objects by storing them in memory. 
B)  It preserves objects by storing them to a file. 
C)  It preserves objects by creating a sqlite database. 
D)  It preserves objects by adding them to the calling Python script file. 
A)  It preserves objects by storing them in memory. 
B)  It preserves objects by storing them to a file. 
C)  It preserves objects by creating a sqlite database. 
D)  It preserves objects by adding them to the calling Python script file.

Question 4

The attributes of an object are represented as what type of variables?

Accepted Answer

A)  state variables 
B)  substance variables 
C)  instance variables 
D)  self variables 
A)  state variables 
B)  substance variables 
C)  instance variables 
D)  self variables

Question 5

What are the two parts of a rational number? (Choose two.)

Accepted Answer

A)  dominator 
B)  denominator 
C)  numerator 
D)  terminator 
A)  dominator 
B)  denominator 
C)  numerator 
D)  terminator

Question 6

As a rule of thumb, when should you include an __eq__ method in a class?

Accepted Answer

A)  Always, because the comparison for equality is not compatible with classes. 
B)  Whenever a comparison for equality uses criterion other than object identity. 
C)  Only when you need to be able to make a comparison based on object identity. 
D)  Only if you plan to export the class as part of a module. 
A)  Always, because the comparison for equality is not compatible with classes. 
B)  Whenever a comparison for equality uses criterion other than object identity. 
C)  Only when you need to be able to make a comparison based on object identity. 
D)  Only if you plan to export the class as part of a module.

Question 7

Inheritance allows a class to automatically reuse and extend the code of similar but more general classes.

Accepted Answer

A) True 
 B)False

Question 8

In Python, when does an object reach the end of its life?

Accepted Answer

A)  When its timeout value has expired. 
B)  When it has been terminated by the destroy method. 
C)  When it has passed the last statement that uses it. 
D)  When it can no longer be referred to by the program that created it. 
A)  When its timeout value has expired. 
B)  When it has been terminated by the destroy method. 
C)  When it has passed the last statement that uses it. 
D)  When it can no longer be referred to by the program that created it.

Question 9

The Python interpreter picks out equality from the other comparisons by looking for an __equals__ method when it encounters the == and != operators.

Accepted Answer

A) True 
 B)False

Question 10

A method automatically returns the value None when it includes no return statement.

Accepted Answer

A) True 
 B)False

Question 11

What type of programming is defined by the term "imperative programming"?

Accepted Answer

A)  Programming such that classes can be defined for objects and reused to define similar objects. 
B)  Programming that involves the use of input and output statements, assignment statements, and control statements for selection and iteration. 
C)  Programming that uses cooperating subprograms to solve problems. 
D)  Programming that views a program as a set of cooperating functions. 
A)  Programming such that classes can be defined for objects and reused to define similar objects. 
B)  Programming that involves the use of input and output statements, assignment statements, and control statements for selection and iteration. 
C)  Programming that uses cooperating subprograms to solve problems. 
D)  Programming that views a program as a set of cooperating functions.

Question 12

When the pickle.load function reaches the end of a file, what type of exception is raised?

Accepted Answer

A)  IOError 
B)  EOFError 
C)  DataError 
D)  FileError 
A)  IOError 
B)  EOFError 
C)  DataError 
D)  FileError

Question 13

Any object can be pickled before it is saved to a file, and then unpickled as it is loaded from a file into a program.

Accepted Answer

A) True 
 B)False

Question 14

Python programmers typically capitalize their own class names to distinguish them from variable names.

Accepted Answer

A) True 
 B)False

Question 15

What method is known as a class's constructor, because it is run automatically when a user instantiates the class?

Accepted Answer

A)  __start__ 
B)  __build__ 
C)  __main__ 
D)  __init__ 
A)  __start__ 
B)  __build__ 
C)  __main__ 
D)  __init__

Question 16

What are the two access modes that are used when opening a file for input and output when pickling? (Choose two.)

Accepted Answer

A)  r 
B)  rb 
C)  w 
D)  wb 
A)  r 
B)  rb 
C)  w 
D)  wb

Question 17

Unlike other object-oriented languages, Python does not support polymorphic methods.

Accepted Answer

A) True 
 B)False

Question 18

What type of programming is defined by the term "procedural programming"?

Accepted Answer

A)  Programming utilizing cooperative subprograms to solve problems. 
B)  Programming using input and output statements, assignment statements, and control statements for selection and iteration. 
C)  Programming such that classes can be defined for objects and reused to define similar objects. 
D)  Programming using a set of cooperating functions rather than relying on assignment. 
A)  Programming utilizing cooperative subprograms to solve problems. 
B)  Programming using input and output statements, assignment statements, and control statements for selection and iteration. 
C)  Programming such that classes can be defined for objects and reused to define similar objects. 
D)  Programming using a set of cooperating functions rather than relying on assignment.

Question 19

What type of programming is defined by the term "functional programming"?

Accepted Answer

A)  Programming utilizing cooperative subprograms to solve problems. 
B)  Programming using input and output statements, assignment statements, and control statements for selection and iteration. 
C)  Programming such that classes can be defined for objects and reused to define similar objects. 
D)  Programming using a set of cooperating functions rather than relying on assignment. 
A)  Programming utilizing cooperative subprograms to solve problems. 
B)  Programming using input and output statements, assignment statements, and control statements for selection and iteration. 
C)  Programming such that classes can be defined for objects and reused to define similar objects. 
D)  Programming using a set of cooperating functions rather than relying on assignment.

Question 20

If the parenthesized parent class name is omitted from the class definition, the new class is automatically made a subclass of self.

Accepted Answer

A) True 
 B)False

Python has a built-in type for rational numbers called rational.

The str method is a good example of a polymorphic method that appears throughout Python's system of classes.

In the context of Python objects, what does the pickling process do?

The attributes of an object are represented as what type of variables?

What are the two parts of a rational number? (Choose two.)

As a rule of thumb, when should you include an eq method in a class?

Inheritance allows a class to automatically reuse and extend the code of similar but more general classes.

In Python, when does an object reach the end of its life?

The Python interpreter picks out equality from the other comparisons by looking for an equals method when it encounters the == and != operators.

A method automatically returns the value None when it includes no return statement.

What type of programming is defined by the term "imperative programming"?

When the pickle.load function reaches the end of a file, what type of exception is raised?

Any object can be pickled before it is saved to a file, and then unpickled as it is loaded from a file into a program.

Python programmers typically capitalize their own class names to distinguish them from variable names.

What method is known as a class's constructor, because it is run automatically when a user instantiates the class?

What are the two access modes that are used when opening a file for input and output when pickling? (Choose two.)

Unlike other object-oriented languages, Python does not support polymorphic methods.

What type of programming is defined by the term "procedural programming"?

What type of programming is defined by the term "functional programming"?

If the parenthesized parent class name is omitted from the class definition, the new class is automatically made a subclass of self.

Introduction

Software Development Data Types and Expressions

Loops and Selection Statements

Strings and Text Files

Lists and Dictionaries

Design With Functions

Simple Graphics and Image Processing

Graphical User Interrfaces

Multithreading Networks and Client Server Programming

Searching Sorting and Complexity Analysis

Filters

Exam 9: Design With Classes

Python has a built-in type for rational numbers called rational.

The str method is a good example of a polymorphic method that appears throughout Python's system of classes.

In the context of Python objects, what does the pickling process do?

The attributes of an object are represented as what type of variables?

What are the two parts of a rational number? (Choose two.)

As a rule of thumb, when should you include an __eq__ method in a class?

Inheritance allows a class to automatically reuse and extend the code of similar but more general classes.

In Python, when does an object reach the end of its life?

The Python interpreter picks out equality from the other comparisons by looking for an __equals__ method when it encounters the == and != operators.

A method automatically returns the value None when it includes no return statement.

What type of programming is defined by the term "imperative programming"?

When the pickle.load function reaches the end of a file, what type of exception is raised?

Any object can be pickled before it is saved to a file, and then unpickled as it is loaded from a file into a program.

Python programmers typically capitalize their own class names to distinguish them from variable names.

What method is known as a class's constructor, because it is run automatically when a user instantiates the class?

What are the two access modes that are used when opening a file for input and output when pickling? (Choose two.)

Unlike other object-oriented languages, Python does not support polymorphic methods.

What type of programming is defined by the term "procedural programming"?

What type of programming is defined by the term "functional programming"?

If the parenthesized parent class name is omitted from the class definition, the new class is automatically made a subclass of self.

Introduction

Software Development Data Types and Expressions

Loops and Selection Statements

Strings and Text Files

Lists and Dictionaries

Design With Functions

Simple Graphics and Image Processing

Graphical User Interrfaces

Multithreading Networks and Client Server Programming

Searching Sorting and Complexity Analysis

Filters

As a rule of thumb, when should you include an eq method in a class?

The Python interpreter picks out equality from the other comparisons by looking for an equals method when it encounters the == and != operators.