cython

1
cpdef int myfunction(int x, int y=2):
2
    a = x - y
3
    return a + x * y
4

5
cdef double _helper(double a):
6
    return a + 1
7

8
cdef class A:
9
    cdef public int a, b
10
    def __init__(self, b=0):
11
        self.a = 3
12
        self.b = b
13

14
    cpdef foo(self, double x):
15
        print(x + _helper(1.0))
16