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Version 3.1.0.post1250+g896fb8140
matplotlib
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matplotlib.axes.Axes.get_legend_handles_labels

Axes.get_legend_handles_labels(self, legend_handler_map=None)[source]

Return handles and labels for legend

ax.legend() is equivalent to

h, l = ax.get_legend_handles_labels()
ax.legend(h, l)