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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 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