1from __future__ import print_function
2
3
4cdef class A:
5
6    cdef foo(self):
7        print("A")
8
9
10cdef class B(A):
11
12    cpdef foo(self):
13        print("B")
14
15class C(B):  # NOTE: not cdef class
16    def foo(self):
17        print("C")
18