Question 1

Match each definition with its term.
-First-come first-served data structure.
A) Queue
B) Static variable
C) Decorator
D) Name mangling

Accepted Answer

A queue is a first-come first-served data structure, meaning that the first element added to the queue will be the first element removed.

Question 2

Match each definition with its term.
-Variable that is shared by all instances of a class and is available to all the methods in the class.
A) Queue
B) Static variable
C) Decorator
D) Name mangling

Accepted Answer

Static variables are shared by all instances of a class and are available to all the methods in the class.

Question 3

Match each definition with its term.
-A special instruction to the Python interpreter that starts with @.
A) Queue
B) Static variable
C) Decorator
D) Name mangling

Accepted Answer

A decorator in Python is a special instruction that starts with @ and is used to modify the behavior of a function or class method.

Question 4

Match each definition with its term.
-Hides any functions from outside of the class and starts with __.
A) Queue
B) Static variable
C) Decorator
D) Name mangling

Accepted Answer

Name mangling is a technique used in Python to hide class members from being accessed outside the class by prefixing their names with double underscores (__).

Question 5

Describe the overall structure of an event-driven program.

Accepted Answer

The answer of Describe the overall structure of an event-driven...

Question 6

Explain the difference between a single thread of execution and multithreading.

Accepted Answer

The answer of Explain the difference between a single thread...

Question 7

What are some of the benefits of extending a class from Thread?

Accepted Answer

The answer of What are some of the benefits of...

Question 8

What callback registration functions does the turtle module provide?

Accepted Answer

The answer of What callback registration functions does the turtle...

Question 9

Case Study 2:
1. import turtle
2.
3. class Etch:
4. def __init__(self):
5. self.__myT = turtle.Turtle()
6. self.__myScreen = turtle.Screen()
7. self.__myT.color('blue')
8. self.__myT.pensize(2)
9. self.__myT.speed(0)
10. self.__distance = 5
11. self.__turn = 10
...
19. def fwd(self):
20. self.__myT.forward(self.__distance)
-Refer to the session in the accompanying Case Study 2. Explain the composition approach used by the Etch class.

Accepted Answer

The answer of Case Study 2:
1. import turtle
2.
3. class Etch:
4....

Question 10

Explain how to set up a callback for mouse events on the turtle.

Accepted Answer

The answer of Explain how to set up a callback...

Question 11

Describe the __moveOneStep method of the AnimatedTurtle class presented in your text. What is the significance of the two underscores in the method name?

Accepted Answer

The answer of Describe the __moveOneStep method of the AnimatedTurtle...

Question 12

How would you detect when two turtles collide?

Accepted Answer

The answer of How would you detect when two turtles...

Question 13

Describe the static method in the video game presented in your text. What is special about static methods?

Accepted Answer

The answer of Describe the static method in the video...

Quiz 13: Video Games: Multithreading, Event Handlers, Static Variables

Match each definition with its term. -First-come first-served data structure.

Match each definition with its term. -Variable that is shared by all instances of a class and is available to all the methods in the class.

Match each definition with its term. -A special instruction to the Python interpreter that starts with @.

Match each definition with its term. -Hides any functions from outside of the class and starts with __.