Classes and Objects in Python Page-6 section-1

51.

What will be the output of the following Python code?

class test:
    def __init__(self):
        self.variable = 'Old'
        self.Change(self.variable)
    def Change(self, var):
        var = 'New'
obj=test()
print(obj.variable)

A. Error because function change can't be called in the __init__ function

B. 'New' is printed

C. 'Old' is printed

D. Nothing is printed

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52.

Is the following Python code correct?

>>> class A:
	def __init__(self,b):
		self.b=b
	def display(self):
		print(self.b)
>>> obj=A("Hello")
>>> del obj

A. True

B. False

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53.
Let A and B be objects of class Foo. Which functions are called when print(A + B) is executed?

A. __add__(), __str__()

B. __str__(), __add__()

C. __sum__(), __str__()

D. __str__(), __sum__()

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54.

What will be the output of the following Python code?

class fruits:
    def __init__(self, price):
        self.price = price
obj=fruits(50)
 
obj.quantity=10
obj.bags=2
 
print(obj.quantity+len(obj.__dict__))

A. 12

B. 52

C. 13

D. 60

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55.
What is hasattr(obj,name) used for?

A. To access the attribute of the object

B. To delete an attribute

C. To check if an attribute exists or not

D. To set an attribute

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56.

What will be the output of the following Python code?

class stud:
   ‘Base class for all students’
   def __init__(self, roll_no, grade):
      self.roll_no = roll_no
      self.grade = grade
   def display (self):
      print("Roll no : ", self.roll_no,  ", Grade: ", self.grade)
print(student.__doc__)

A. Exception is thrown

B. __main__

C. Nothing is displayed

D. Base class for all students

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57.
What is the output of the following code:
`class Parent: x = 10 class Child(Parent): pass obj = Child() print(obj.x)`

A. 10

B. An error will occur

C. obj

D. Child

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58.
How can you check if an object belongs to a specific class in Python?

A. By using the isinstance() function

B. By using the belongsto() method

C. By using the classof() method

D. By using the typeof() function

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59.
del method is used to destroy instances of a class.

A. True

B. False

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60.
Which function overloads the >> operator?

A. __more__()

B. __gt__()

C. __ge__()

D. none of the mentioned

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51.
What will be the output of the following Python code?

`class test: def init(self): self.variable = 'Old' self.Change(self.variable) def Change(self, var): var = 'New' obj=test() print(obj.variable)`

Answer & Solution

52.
Is the following Python code correct?

`>>> class A: def init(self,b): self.b=b def display(self): print(self.b) >>> obj=A("Hello") >>> del obj`

Answer & Solution

53.
Let A and B be objects of class Foo. Which functions are called when print(A + B) is executed?

Answer & Solution

54.
What will be the output of the following Python code?

`class fruits: def init(self, price): self.price = price obj=fruits(50) obj.quantity=10 obj.bags=2 print(obj.quantity+len(obj.dict))`

Answer & Solution

55.
What is hasattr(obj,name) used for?

Answer & Solution

56.
What will be the output of the following Python code?

`class stud: ‘Base class for all students’ def init(self, roll_no, grade): self.roll_no = roll_no self.grade = grade def display (self): print("Roll no : ", self.roll_no, ", Grade: ", self.grade) print(student.doc)`

Answer & Solution

57.
What is the output of the following code:
`class Parent: x = 10 class Child(Parent): pass obj = Child() print(obj.x)`

Answer & Solution

58.
How can you check if an object belongs to a specific class in Python?

Answer & Solution

59.
del method is used to destroy instances of a class.

Answer & Solution

60.
Which function overloads the >> operator?

Answer & Solution

Classes and Objects in Python

51. What will be the output of the following Python code? class test: def __init__(self): self.variable = 'Old' self.Change(self.variable) def Change(self, var): var = 'New' obj=test() print(obj.variable)

Answer & Solution

52. Is the following Python code correct? >>> class A: def __init__(self,b): self.b=b def display(self): print(self.b) >>> obj=A("Hello") >>> del obj

Answer & Solution

53. Let A and B be objects of class Foo. Which functions are called when print(A + B) is executed?

Answer & Solution

54. What will be the output of the following Python code? class fruits: def __init__(self, price): self.price = price obj=fruits(50) obj.quantity=10 obj.bags=2 print(obj.quantity+len(obj.__dict__))

Answer & Solution

55. What is hasattr(obj,name) used for?

Answer & Solution

56. What will be the output of the following Python code? class stud: ‘Base class for all students’ def __init__(self, roll_no, grade): self.roll_no = roll_no self.grade = grade def display (self): print("Roll no : ", self.roll_no, ", Grade: ", self.grade) print(student.__doc__)

Answer & Solution

57. What is the output of the following code:class Parent: x = 10class Child(Parent): passobj = Child()print(obj.x)

Answer & Solution

58. How can you check if an object belongs to a specific class in Python?

Answer & Solution

59. __del__ method is used to destroy instances of a class.

Answer & Solution

60. Which function overloads the >> operator?

Answer & Solution

51.
What will be the output of the following Python code?

`class test: def init(self): self.variable = 'Old' self.Change(self.variable) def Change(self, var): var = 'New' obj=test() print(obj.variable)`

52.
Is the following Python code correct?

`>>> class A: def init(self,b): self.b=b def display(self): print(self.b) >>> obj=A("Hello") >>> del obj`

53.
Let A and B be objects of class Foo. Which functions are called when print(A + B) is executed?

54.
What will be the output of the following Python code?

`class fruits: def init(self, price): self.price = price obj=fruits(50) obj.quantity=10 obj.bags=2 print(obj.quantity+len(obj.dict))`

55.
What is hasattr(obj,name) used for?

56.
What will be the output of the following Python code?

`class stud: ‘Base class for all students’ def init(self, roll_no, grade): self.roll_no = roll_no self.grade = grade def display (self): print("Roll no : ", self.roll_no, ", Grade: ", self.grade) print(student.doc)`

57.
What is the output of the following code:
`class Parent: x = 10 class Child(Parent): pass obj = Child() print(obj.x)`

58.
How can you check if an object belongs to a specific class in Python?

59.
del method is used to destroy instances of a class.

60.
Which function overloads the >> operator?