Method Resolution Order in case of Base Classes Having different init params

Question

I am trying to understand MRO in Python. Although there are various posts here, I am not particularly getting what I want. Consider two classes A and B

Answer 1

Thanks all for helping me understand MRO. Below is my complete Code together with output. I hope this will also help other's.

class BaseClass(object):

    def __init__(self, *args, **kwargs):
        self.name = kwargs.get('name')

    def printName(self):
        print "I am called from BaseClass"
        print self.name

    def setName(self, givenName):
        print "I am called from BaseClass"
        self.name=givenName

    def CalledFromThirdGen(self):
        print "I am called from BaseClass and invoked from Third Generation Derived            Class"

class FirstGenDerived(BaseClass):

    def __init__(self, *args, **kwargs):
        super(FirstGenDerived, self).__init__(*args, **kwargs)
        self.name = kwargs.get('name')
        self.FamilyName = kwargs.get('FamilyName')

    def printFullName(self):
        print "I am called from FirstDerivedClass"
        print self.name + ' ' + self.FamilyName

    def printName(self):
        print "I am called from FirstDerivedClass, although I was present in BaseClass"
        print "His Highness " + self.name + ' ' + self.FamilyName

class SecondGenDerived(BaseClass):

    def __init__(self, *args, **kwargs):
        super(SecondGenDerived, self).__init__(*args, **kwargs)
        self.name = kwargs.get('name')
        self.middleName = kwargs.get('middleName')
        self.FamilyName = kwargs.get('FamilyName')

    def printWholeName(self):
        print "I am called from SecondDerivedClass"
        print self.name + ' ' + self.middleName + ' ' + self.FamilyName

    def printName(self):
        print "I am called from SecondDerivedClass, although I was present in BaseClass"
        print "Sir " + self.name + ' ' + self.middleName + ' ' + self.FamilyName

class ThirdGenDerived(FirstGenDerived, SecondGenDerived):

    def __init__(self, *args, **kwargs):
        super(ThirdGenDerived, self).__init__(*args, **kwargs)

if name == "main":

    print "Executing BaseClass"
    BaseClass(name='Robin').printName()

    print "Executing Instance of BaseClass with SetName \n"
    Instance = BaseClass()
    Instance.setName("Little John")
    Instance.printName()
    print "################################################\n"


    print "Executing FirstGenDerived with printName and printFullName\n"
    FirstGenDerived(name='Robin', FamilyName='Hood').printFullName()
    FirstGenDerived(name='Robin', FamilyName='Hood').printName()
    print "################################################\n"


    print "Executing FirstGenderived with instance\n"
    Instance2 = FirstGenDerived(name=None, FamilyName="Hood")
    Instance2.setName("Edwards")
    Instance2.printFullName()
    print "################################################\n"

    print "Executing SecondGenDerived with printName and printWholeName\n"
    SecondGenDerived(name='Robin', FamilyName='Hood', middleName='Williams').printWholeName()
    SecondGenDerived(name='Robin', FamilyName='Hood', middleName='Williams').printName()
    print "################################################\n"

    print "Executing ThirdGenDerived\n"
    ThirdGenDerived(name='Robin', FamilyName='Hood', middleName='Williams').CalledFromThirdGen()
    ThirdGenDerived(name='Robin', FamilyName='Hood', middleName='Williams').printName()
    print "################################################\n"

Output: Executing BaseClass I am called from BaseClass Robin Executing Instance of BaseClass with SetName

I am called from BaseClass I am called from BaseClass Little John

Executing FirstGenDerived with printName and printFullName

I am called from FirstDerivedClass Robin Hood I am called from FirstDerivedClass, although I was present in BaseClass His Highness Robin Hood

Executing FirstGenderived with instance

I am called from BaseClass I am called from FirstDerivedClass Edwards Hood

Executing SecondGenDerived with printName and printWholeName

I am called from SecondDerivedClass Robin Williams Hood I am called from SecondDerivedClass, although I was present in BaseClass Sir Robin Williams Hood

Executing ThirdGenDerived

I am called from BaseClass and invoked from Third Generation Derived Class I am called from FirstDerivedClass, although I was present in BaseClass His Highness Robin Hood