Infosys Certified Python Programmer

What will be the output of the following?

Name=["Stefan","Damon","Elena","Katherine"]
print(Name[-2][2])

Which of the following statement(s) about "self" in a Python class is/are TRUE?

(i) self is the name commonly given to the first(leftmost) argument in a class method function.

(ii) Python automatically fills it in with the instance object that is the implied subject of the method call

(iii) The argument need not be called self though this is a very strong convention. Its position is significant.

Which of the following statement(s) in Python is/are TRUE?

(i) A class can be considered a template or blueprint that can be used to create objects.

(ii) To create an object, it is important to look at the 'constructor' method: __init__() to find out the arguments that are required.

What is the output of the following Python code?

class P:
    def f(self):
        return self.g()

    def g(self):
        return 'P'

class C(P):
    def g(self):
        return 'C'

p = P()
c = C()
print(p.f(), c.f())
print(p.g(), c.g())

What will be the output of following Python code?

class Base:
    def __init__(self, num):
        self.n1 = num

class Child(Base):
    def __init__(self, num):
        self.n2 = num

oC = Child(12)
print(oC.n1, oC.n2)

Which of the following statement(s) in Python is/are TRUE?

(i)Class variables are accessible by all objects (instances) of a class, while object variables are only applicable to the object (instance) itself.

(ii) An instance method is a function which operates on an instance of a class.

What is the output of the following Python code?

class A():
  def __init__(self, a={}):
    if not ('1' in a):
        a['1'] = 1
    else:
        a['1'] += 1
    print(a['1'])

for i in range(2):
    a = A()

What is the output of the following Python code?

class Test:
    def __init__(self):
        self.bool = True
    def prnt(self):
        if self.bool:
            print('Hi')
            self.bool = False
        else:
            print('Bye')

class Alpha(Test):
    def __init__(self):
        self.val = '555'
    def disp(self):
        print(self.val)

t1 = Test()
t1.prnt()
t1.prnt()

t2 = Alpha()
t2.disp()

What is the output of the following Python code?

class Test:
    def __init__(self):
        self.bool = True
    def prnt(self):
        if self.bool:
            print('Hi')
            self.bool = False
        else:
            print('Bye')

class Alpha(Test):
    def __init__(self):
        self.val = '555'
    def disp(self):
        print(self.val)

t1 = Alpha()
t1.prnt()

What will be the output of the following Python code?

class Parent(object):
    def display(self):
        print('Parent')

class Child(Parent):
    def display(self):
        print('Child')

p=Parent()
p.display()
c=Child()
c.display()