'''The issubclass(sub, sup) method is used to check the relationships between the specified classes.
   It returns true if the first class is the subclass of the second class, and false otherwise.
   Consider the following example.'''

class Calculation1:  
    def Summation(self,a,b):  
        return a+b;  
class Calculation2:  
    def Multiplication(self,a,b):  
        return a*b;  
class Derived(Calculation1,Calculation2):  
    def Divide(self,a,b):  
        return a/b;  
d = Derived()  
print(issubclass(Derived,Calculation2))  
print(issubclass(Calculation1,Calculation2))  
