cython

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cdef class Parrot:
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  cdef void describe(self):
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    print "This parrot is resting."
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cdef class Norwegian(Parrot):
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  cdef void describe(self):
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    Parrot.describe(self)
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    print "Lovely plumage!"
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cdef Parrot p1, p2
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p1 = Parrot()
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p2 = Norwegian()
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p1.describe()
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p2.describe()
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