thesportszones.com – MCQs, Mock Tests | Python Python Mcq Set 20

1 What will be the output of the following Python code? class A: def __init__(self, x= 1): self.x = x class der(A): def __init__(self,y = 2): super().__init__() self.y = y def main(): obj = der() print(obj.x, obj.y) main()

A Error, the syntax of the invoking method is wrong B The program runs fine but nothing is printed C 1 0 D 1 2

✅ Correct Answer: 4

2 What does built-in function type do in context of classes?

A Determines the object name of any value B Determines the class name of any value C Determines class description of any value D Determines the file name of any value

✅ Correct Answer: 2

3 Which of the following is not a type of inheritance?

A Double-level B Multi-level C Single-level D Multiple

✅ Correct Answer: 1

4 What does built-in function help do in context of classes?

A Determines the object name of any value B Determines the class identifiers of any value C Determines class description of any built-in type D Determines class description of any user-defined built-in type

✅ Correct Answer: 3

5 What will be the output of the following Python code? class A: def one(self): return self.two() def two(self): return 'A' class B(A): def two(self): return 'B' obj1=A() obj2=B() print(obj1.two(),obj2.two())

A A A B A B C B B D An exception is thrown

✅ Correct Answer: 2

6 What type of inheritance is illustrated in the following Python code? class A(): pass class B(): pass class C(A,B): pass

A Multi-level inheritance B Multiple inheritance C Hierarchical inheritance D Single-level inheritance

✅ Correct Answer: 2

7 What type of inheritance is illustrated in the following Python code? class A(): pass class B(A): pass class C(B): pass

A Multi-level inheritance B Multiple inheritance C Hierarchical inheritance D Single-level inheritance

✅ Correct Answer: 1

8 What does single-level inheritance mean?

A A subclass derives from a class which in turn derives from another class B A single superclass inherits from multiple subclasses C A single subclass derives from a single superclass D Multiple base classes inherit a single derived class

✅ Correct Answer: 3

9 Which of the following statements isnâ€™t true?

A A non-private method in a superclass can be overridde B A derived class is a subset of superclass C The value of a private variable in the superclass can be changed in the subclass D When invoking the constructor from a subclass, the constructor of superclass is automatically invoked

✅ Correct Answer: 3

10 What will be the output of the following Python code? class A: def __init__(self,x): self.x = x def count(self,x): self.x = self.x+1 class B(A): def __init__(self, y=0): A.__init__(self, 3) self.y = y def count(self): self.y += 1 def main(): obj = B() obj.count() print(obj.x, obj.y) main()

A 3 0 B 3 1 C 0 1 D An exception in thrown

✅ Correct Answer: 2

11 What will be the output of the following Python code? >>> class A: pass >>> class B(A): pass >>> obj=B() >>> isinstance(obj,A)

A True B False C Wrong syntax for isinstance() method D Invalid method for classes

✅ Correct Answer: 1

12 Which of the following statements is true?

A The __new__() method automatically invokes the __init__ method B The __init__ method is defined in the object class C The __eq(other) method is defined in the object class D The __repr__() method is defined in the object class

✅ Correct Answer: 3

13 What will be the output of the following Python code? class A: def __init__(self): self.__x = 1 class B(A): def display(self): print(self.__x) def main(): obj = B() obj.display() main()

A 1 B 0 C Error, invalid syntax for object declaration D Error, private class member canâ€™t be accessed in a subclass

✅ Correct Answer: 4

14 What will be the output of the following Python code? class A: def __init__(self): self._x = 5 class B(A): def display(self): print(self._x) def main(): obj = B() obj.display() main()

A Error, invalid syntax for object declaration B Nothing is printed C 5 D Error, private class member canâ€™t be accessed in a subclass

✅ Correct Answer: 3

15 What will be the output of the following Python code? class A: def __init__(self,x=3): self._x = x class B(A): def __init__(self): super().__init__(5) def display(self): print(self._x) def main(): obj = B() obj.display() main()

A 5 B Error, class member x has two values C 3 D Error, protected class member canâ€™t be accessed in a subclass

✅ Correct Answer: 1

16 Which of the following best describes polymorphism?

A Ability of a class to derive members of another class as a part of its own definition B Means of bundling instance variables and methods in order to restrict access to certain class members C Focuses on variables and passing of variables to functions D Allows for objects of different types and behaviour to be treated as the same general type

✅ Correct Answer: 4

17 What is the biggest reason for the use of polymorphism?

A It allows the programmer to think at a more abstract level B There is less program code to write C The program will have a more elegant design and will be easier to maintain and update D Program code takes up less space

✅ Correct Answer: 3

18 What is the use of duck typing?

A More restriction on the type values that can be passed to a given method B No restriction on the type values that can be passed to a given method C Less restriction on the type values that can be passed to a given method D Makes the program code smaller

✅ Correct Answer: 3

19 What will be the output of the following Python code? class A: def __str__(self): return '1' class B(A): def __init__(self): super().__init__() class C(B): def __init__(self): super().__init__() def main(): obj1 = B() obj2 = A() obj3 = C() print(obj1, obj2,obj3) main()

A 1 1 1 B 1 2 3 C â€˜1â€™ â€˜1â€™ â€˜1â€™ D An exception is thrown

✅ Correct Answer: 1

20 What will be the output of the following Python code? class Demo: def __init__(self): self.x = 1 def change(self): self.x = 10 class Demo_derived(Demo): def change(self): self.x=self.x+1 return self.x def main(): obj = Demo_derived() print(obj.change()) main()

A 11 B 2 C 1 D An exception is thrown

✅ Correct Answer: 2

21 What will be the output of the following Python code? class A: def __repr__(self): return "1" class B(A): def __repr__(self): return "2" class C(B): def __repr__(self): return "3" o1 = A() o2 = B() o3 = C() print(obj1, obj2, obj3)

A 1 1 1 B 1 2 3 C 1â€™ â€˜1â€™ â€˜1â€™ D An exception is thrown

✅ Correct Answer: 2

22 hat will be the output of the following Python code? class A: def __init__(self): self.multiply(15) print(self.i) def multiply(self, i): self.i = 4 * i; class B(A): def __init__(self): super().__init__() def multiply(self, i): self.i = 2 * i; obj = B()

A 15 B 60 C An exception is thrown D 30

✅ Correct Answer: 4

23 What will be the output of the following Python code? class Demo: def check(self): return " Demo's check " def display(self): print(self.check()) class Demo_Derived(Demo): def check(self): return " Derived's check " Demo().display() Demo_Derived().display()

A Demoâ€™s check Derivedâ€™s check B Demoâ€™s check Demoâ€™s check C Derivedâ€™s check Demoâ€™s check D Syntax error

✅ Correct Answer: 1

24 What will be the output of the following Python code? class A: def __init__(self): self.multiply(15) def multiply(self, i): self.i = 4 * i; class B(A): def __init__(self): super().__init__() print(self.i) def multiply(self, i): self.i = 2 * i; obj = B()

A 15 B 30 C An exception is thrown D 60

✅ Correct Answer: 2

25 hat will be the output of the following Python code? class Demo: def __check(self): return " Demo's check " def display(self): print(self.check()) class Demo_Derived(Demo): def __check(self): return " Derived's check " Demo().display() Demo_Derived().display()

A Demoâ€™s check Derivedâ€™s check B Demoâ€™s check Demoâ€™s check C Derivedâ€™s check Demoâ€™s check D Syntax error

✅ Correct Answer: 2

26 What will be the output of the following Python code? class A: def __init__(self, x, y): self.x = x self.y = y def __str__(self): return 1 def __eq__(self, other): return self.x * self.y == other.x * other.y obj1 = A(5, 2) obj2 = A(2, 5) print(obj1 == obj2)

A False B 1 C True D An exception is thrown

✅ Correct Answer: 3

27 What will be the output of the following Python code? class A: def one(self): return self.two() def two(self): return 'A' class B(A): def two(self): return 'B' obj2=B() print(obj2.two())

A A B An exception is thrown C A B D B

✅ Correct Answer: 4

28 Which of the following statements is true?

A A non-private method in a superclass can be overridden B A subclass method can be overridden by the superclass C A private method in a superclass can be overridden D Overriding isnâ€™t possible in Python

✅ Correct Answer: 1

29 Which of these is not a fundamental features of OOP?

A Encapsulation B Inheritance C Instantiation D Polymorphism

✅ Correct Answer: 3

30 Which of the following is the most suitable definition for encapsulation?

A Ability of a class to derive members of another class as a part of its own definition B Means of bundling instance variables and methods in order to restrict access to certain class members C Focuses on variables and passing of variables to functions D Allows for implementation of elegant software that is well designed and easily modified

✅ Correct Answer: 2

31 What will be the output of the following Python code? class Demo: def __init__(self): self.a = 1 self.__b = 1 def display(self): return self.__b obj = Demo() print(obj.__b)

A The program has an error because there isnâ€™t any function to return self.a B The program has an error because b is private and display(self) is returning a private member C The program has an error because b is private and hence canâ€™t be printed D The program runs fine and 1 is printed

✅ Correct Answer: 3

32 Methods of a class that provide access to private members of the class are called as ______ and ______

A getters/setters B __repr__/__str__ C user-defined functions/in-built functions D __init__/__del__

✅ Correct Answer: 1

33 Which of these is a private data field? def Demo: def __init__(self): __a = 1 self.__b = 1 self.__c__ = 1 __d__= 1

A __a B __b C __c__ D __d__

✅ Correct Answer: 2

34 What will be the output of the following Python code? class Demo: def __init__(self): self.a = 1 self.__b = 1 def get(self): return self.__b obj = Demo() print(obj.get())

A The program has an error because there isnâ€™t any function to return self.a B The program has an error because b is private and display(self) is returning a private member C The program has an error because b is private and hence canâ€™t be printed D The program runs fine and 1 is printed

✅ Correct Answer: 4

35 What will be the output of the following Python code? class Demo: def __init__(self): self.a = 1 self.__b = 1 def get(self): return self.__b obj = Demo() obj.a=45 print(obj.a)

A The program runs properly and prints 45 B The program has an error because the value of members of a class canâ€™t be changed from outside the class C The program runs properly and prints 1 D The program has an error because the value of members outside a class can only be changed as self.a=45

✅ Correct Answer: 1

36 What will be the output of the following Python code? class fruits: def __init__(self): self.price = 100 self.__bags = 5 def display(self): print(self.__bags) obj=fruits() obj.display()

A The program has an error because display() is trying to print a private class member B The program runs fine but nothing is printed C The program runs fine and 5 is printed D The program has an error because display() canâ€™t be accessed

✅ Correct Answer: 3

37 What will be the output of the following Python code? class student: def __init__(self): self.marks = 97 self.__cgpa = 8.7 def display(self): print(self.marks) obj=student() print(obj._student__cgpa)

A The program runs fine and 8.7 is printed B Error because private class members canâ€™t be accessed C Error because the proper syntax for name mangling hasnâ€™t been implemented D he program runs fine but nothing is printed

✅ Correct Answer: 1

38 Which of the following is false about protected class members?

A They begin with one underscore B They can be accessed by subclasses C They can be accessed by name mangling method D They can be accessed within a class

✅ Correct Answer: 3

39 What will be the output of the following Python code? class objects: def __init__(self): self.colour = None self._shape = "Circle" def display(self, s): self._shape = s obj=objects() print(obj._objects_shape)

A The program runs fine because name mangling has been properly implemented B Error because the member shape is a protected member C Error because the proper syntax for name mangling hasnâ€™t been implemented D Error because the member shape is a private member

✅ Correct Answer: 2

40 How many except statements can a try-except block have?

A zero B one C more than one D more than zero

✅ Correct Answer: 4

41 When will the else part of try-except-else be executed?

A always B when an exception occurs C when no exception occurs D when an exception occurs in to except block

✅ Correct Answer: 3

42 Is the following Python code valid? try: # Do something except: # Do something finally: # Do something

A no, there is no such thing as finally B no, finally cannot be used with except C no, finally must come before except D yes

✅ Correct Answer: 4

43 Is the following Python code valid? try: # Do something except: # Do something else: # Do something

A no, there is no such thing as else B no, else cannot be used with except C no, else must come before except D yes

✅ Correct Answer: 4

44 Can one block of except statements handle multiple exception?

A yes, like except TypeError, SyntaxError [,â€¦] B yes, like except [TypeError, SyntaxError] C no D none of the mentioned

✅ Correct Answer: 1

45 When is the finally block executed?

A when there is no exception B when there is an exception C only if some condition that has been specified is satisfied D always

✅ Correct Answer: 4

46 What will be the output of the following Python code? def foo(): try: return 1 finally: return 2 k = foo() print(k)

A 1 B 2 C 3 D error, there is more than one return statement in a single try-finally block

✅ Correct Answer: 2

47 What will be the output of the following Python code? def foo(): try: print(1) finally: print(2) foo()

A 1 2 B 1 C 2 D none of the mentioned

✅ Correct Answer: 1

48 What will be the output of the following Python code? try: if '1' != 1: raise "someError" else: print("someError has not occurred") except "someError": print ("someError has occurred")

A someError has occurred B someError has not occurred C invalid code D none of the mentioned

✅ Correct Answer: 3

49 What happens when â€˜1â€™ == 1 is executed?

A we get a True B we get a False C an TypeError occurs D a ValueError occurs

✅ Correct Answer: 2

50 What will be the output of the following Python code? x=10 y=8 assert x>y, 'X too small'

A Assertion Error B 10 8 C No output D 108

✅ Correct Answer: 3

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Python Mcq Set 20