docs/examples/userguide/extension_types/pets.pyx


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cdef class Parrot:


    cdef void describe(self):
        print("This parrot is resting.")


cdef class Norwegian(Parrot):


    cdef void describe(self):
        Parrot.describe(self)
        print("Lovely plumage!")

cdef Parrot p1, p2
p1 = Parrot()
p2 = Norwegian()
print("p2:")
p2.describe()