class A:
def chetan1(self):
print(“Chetan 1 working”)
def chetan2(self):
print(“Chetan 2 working”)
class B(A):
def chetan3(self):
print(“Chetan 3 working”)
def chetan4(self):
print(“Chetan 4 working”)
class C(B):
def chetan5(self):
print(“Chetan 5 working”)