[Python] How to change legend patches after plotting?

I have a function that is supposed to enlarge all labels in a figure to make it ready for export. However I fail to enlarge the legend properly:

import matplotlib.pyplot as plt

def enlarge_legend(ax, fontSize = 25):
for text in ax.get_legend().get_texts():
text.set_fontsize(fontSize)


fig, ax = plt.subplots()
ax.scatter(
[1,2,3],
[2,3,1],
label = "auto"
)
ax.legend()
enlarge_legend(ax)


result:


I would like the circle patch to be bigger as well but both ax.get_legend().get_patches() and ax.get_legend().get_lines() return empty lists. Any idea how to do it?

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