代码:
import matplotlib.pyplot as plt
from matplotlib.widgets import Button# 创建一个示例图形
fig, ax = plt.subplots()
line, = ax.plot([1, 2, 3], label='Line 1')# 添加图例
legend = ax.legend(loc='upper right', draggable=True)# 添加一个按钮,用于切换图例的可见性
ax_button = plt.axes([0.81, 0.02, 0.1, 0.04])
button = Button(ax_button, 'Toggle Legend')def toggle_legend(event):legend.set_visible(not legend.get_visible())plt.draw()button.on_clicked(toggle_legend)plt.show()