如何放大此mandlebrot代码

Question

我有以下jupyter笔记本代码，可将mandlebrot分形绘制50次并将其保存在50个不同的图像文件中。如果有人可以帮助我找出如何将每个图像放大到中心，我会很喜欢。我把数字弄乱了，但是如果我能放大一点并保持窗口稳定，我会喜欢的。谢谢！

import numpy
from numba import jit
import matplotlib.pyplot as plt

@jit

def mandlebrot(Re, Im, max_iter, zoom):
    c = complex(Re, Im)
    z = 0.0j

    for i in range(max_iter):
        z = (z*z) + c
        if(z.real*z.real + z.imag*z.imag) >= 4:
            return i

    return max_iter


zoom = 1
for i in range(50):


    columns = 1920
    rows = 1080

    result = numpy.zeros([rows, columns])
    for row_index, Re in enumerate(numpy.linspace(-2, 1, num = rows)):
        for column_index, Im in enumerate(numpy.linspace(-1, 1, num = columns)):
            result[row_index, column_index] = mandlebrot(Re, Im, 50, zoom)


    plt.figure(dpi = 100)
    plt.imshow(result.T, cmap = 'hot', interpolation = 'bilinear', extent = [-2, 1, -1, 1])

    zoom+=.05

    plt.xlabel('Real')
    plt.ylabel('Imaginary')
    filepath = r"C:\Users\Riley\Desktop\mandlebrot\mandlebrot" + str(i) + ".png"
    plt.savefig(filepath)
    plt.close()