PYTHON

12. Which of the following is NOT true about instance methods for a class?

The object on which a method is applied is automatically passed to the self parameter variable of the method

In a method, you access instance variables through the self parameter variable

A class variable belongs to the class, not to any instance of the class

The accessor and mutator methods are automatically called when an object is created

13. Consider the following class, Which method is an accessor?

class Counter :

def getValue(self) : return self._value def click(self) : self._value = self._value + 1 def unClick(self) : self._value = self._value - 1 def reset(self) : self._value = 0

14. How do you access instance variables in a method?

Using the constructor

Using a setter variable

Using a default value

Using the self reference

15. Use ____ to store an object to a file.

objectName = pickle_load(file_variable)

pickle_dump(objectName, file_Variable)

17. How many constructors can be defined for each class?

Constructors are not used in Python

Only one may be defined

At least one, but as many as needed

At least one, but no more than five

What is the purpose of the self parameter?

Enables changes in the implementation without affecting users of a class

To create variables with public visibility

Store the data for all objects created by the same class

Refers to the object on which the method was invoked

True or False: "The pickle module implements a fundamental, but powerful algorithm for serializing and de-serializing a Python object structure."

True or False: "Before invoking a method on an object, the object must have first been instantiated."

True or False: As a class is instantiatedits its constructor executes.

True or False: A constructor is often used to initialize class variables

Python's ____ function is used to determine whether or not two objects are of the same type.

is

type

in

eq

"A(n) ____ class includes data and methods common to its subclasses, but is never instantiated."

polymorphic

abstract

encapsulated

anonynous

Assume a class exists named Fruit. Which of the follow statements constructs an object of the Fruit class?

def Fruit()

class Fruit()

x = Fruit()

x = Fruit.create()

What method name is used for a constructor?

__begin__

__construct__

__create__

__init__