Passing Arguments in Inheritance in Python

class cls: #'cls' is name of class.
    def fun(self):
        print("This is Function of class cls")
    def fun2(self, arg):
        print("This is "+ arg +" Function of class cls")
class cls2(cls): #class 'cls2' is Child of Class 'cls'.
    def fun3(self):
        print("This is Simple Function of class cls2")
    def fun4(self, arg2):
        print("This is "+ arg2 +" Function of Class cls2")
class cls3(cls2): #class 'cls3' is Child of Class 'cls2'.
    def __init__(self):
        print("This is Default Constructor of class cls3")
    def fun5(self, arg3):
        print("This is "+ arg3 +" Function of Class cls3")
ob = cls3() #'ob' is object of class 'cls3', and calling Constructor.
ob.fun3()
ob.fun4("Parameterized")
ob.fun()
ob.fun2("Parameterized")
ob.fun5("Parameterized")

class cls: #'cls' is name of class.
    def fun(self):
        print("This is Function of class cls")
    def fun2(self, name):
        print("My Name is: ", name)
class cls2(cls): #class 'cls2' is Child of class 'cls'.
    def __init__(self):
        print("I am Default Constructor of class cls2")
class cls3(cls): #class 'cls3' is Child class of class 'cls'.
    def __init__(self):
        print("I am Default Constructor of class cls3")
ob = cls3() #'ob' is object of class 'cls3'.
ob.fun()
ob.fun2("HiLaLs Afridi")
ob2 = cls2() #'ob2' is object of class 'cls2'.
ob2.fun()
ob2.fun2("Bilal Khan")