def mandelbrot(zmin, zmax, hpx, niter, func=lambda z, c: z**2 + c):
    vpx=round(hpx * abs((zmax-zmin).imag / (zmax-zmin).real))
    z = zeros((vpx, hpx), dtype=complex128)
    x = linspace(zmin.real, zmax.real, hpx)
    y = linspace(zmin.imag, zmax.imag, vpx)
    cRe, cIm = meshgrid(x, y)
    c = cRe + cIm * 1j
    M = zeros((vpx,hpx))
    for _ in range(niter):
      mask = find(abs(z)<2)
      M.flat[mask] = M.flat[mask] + 1
      z.flat[mask] = func(z.flat[mask], c.flat[mask])
      #z.flat[mask] = z.flat[mask]**2 + c.flat[mask]
    M.flat[mask] = 0
    return M

Mc = mandelbrot(-2.1+1.05j,0.7-1.05j,640,64)

imshow(Mc)

Mn3 = mandelbrot(-1.2+1.6j,1.2-1.6j,240,64, func=lambda z, c: z**3 + c)

imshow(Mn3)

Mn4 = mandelbrot(-1.2+1.6j, 1.2-1.6j, 320, 64, func=lambda z, c: z**4 + c)

imshow(Mn4)

Mn2_5 = mandelbrot(-1.6 + 1.2j, 1.6 - 1.2j, 320, 64, func=lambda z,c: z**2.5 + c)

imshow(Mn2_5)

Mn2_01i = mandelbrot(-2.2 + 1.2j, 1.0 - 1.2j, 320, 64, func=lambda z, c: z**(2 + 0.1j) + c)

imshow(Mn2_01i)

(3 + 2j)**(1 + 3j)

Mp=mandelbrot(-2 + 1.05j, 0.8 - 1.05j, 320, 64, func=lambda z, c: z**2 + z + c)

imshow(Mp)