Question

1.For Python Which statement(s) are true regarding private class variables?

private variables can be accessible inside the class.

private variables can be accessible outside the class.

private variable values can be changed directly outside of the class

private variables can be changed outside the class through set methods.

2.

In the following code,

def A:
def __init__(self):
     __a = 1
     self.__b = 1
     self.c = 1
     __d__ = 1

# Other methods omitted

Which of the following is a private data field?

Group of answer choices

__a

__b

c

__d__

3.

Analyze the following code and choose the more accurate statement.

class A:
     def __init__(self, s):
         self.s = s

     def print(self):
         print(s)

a = A("Welcome")
a.print()

Group of answer choices

The program has an error because class A does not have a constructor.

The program has an error because class A should have a print method with signature print(self, s).

The program has an error because class A should have a print method with signature print(s).

The program would run if you change print(s) to print(self.s).

4.

Which of the following statement is most accurate?

Group of answer choices

A reference variable is an object.

An object is a reference type variable

An object may contain other objects.

An object may contain the references of other objects.

5.

Which special method returns a string representation of the object?

Group of answer choices

__init__ method

print method

__str__ method

constructor

6.

Class design should include ________

Group of answer choices

fields

constructor

accessor and mutator methods

other useful methods

All of the above

7.

What is max("Programming is fun")?

Group of answer choices

P

r

blank space character

u

8.

What is "Programming is fun"[1:3]?

Group of answer choices

Pr

Pro

ro

rog

Answer 1

1.For Python Which statement(s) are true regarding private class variables?

Answer: private variables can be accessible inside the class.

              private variables can be changed outside the class through set methods.
                  
                              

2. def __init__(self):
     __a = 1
     self.__b = 1
     self.c = 1
     __d__ = 1

# Other methods omitted

Which of the following is a private data field?

Answer: self.__b

self.__b is a private field

     

3. Analyze the following code and choose the more accurate statement.

class A:
     def __init__(self, s):
         self.s = s

     def print(self):
         print(s)

a = A("Welcome")
a.print()

Answer: The program would run if you change print(s) to print(self.s)

      

4. Which of the following statement is most accurate?

Group of answer choices

A reference variable is an object.

An object is a reference type variable

An object may contain other objects.

An object may contain the references of other objects.

Answer: An object may contain the references of other objects.

  

5. Which special method returns a string representation of the object?

Answer: __str__

      

6.Class design should include ________

Group of answer choices

fields

constructor

accessor and mutator methods

other useful methods

All of the above

answer: All of the above

     

7. What is max("Programming is fun")?

Group of answer choices

P

r

blank space character

u

answer: u

8. What is "Programming is fun"[1:3]?

Group of answer choices

Pr

Pro

ro

rog

Answer: ro