def mandel(x, y, max_iters):
                """
                Given the real and imaginary parts of a complex number,
                determine if it is a candidate for membership in the Mandelbrot
                set given a fixed number of iterations.
                """
                i = 0
                c = complex(x,y)
                z = 0.0j
                for i in range(max_iters):
                    z = z * z + c
                    if (z.real * z.real + z.imag * z.imag) >= 4:
                        return i

                return 255

                Given the real and imaginary parts of a complex number,
                determine if it is a candidate for membership in the Mandelbrot
                set given a fixed number of iterations.
                
numba/tests/doc_examples/test_examples.py