code: def mandelbrot(x, y, maxit):
      c = x + y * 1j
      z = 0 + 0j
      it = 0
      while abs(z) < 2 and it < maxit:
          z = z**2 + c
          it += 1
      return it
  
label_desc: Use image node_id 1 for calling a global function with example usage: mandelbrot(x, y, maxit) and returns: it