为matplotlib / seaborn图中的某些单元格添加自定义边框

import matplotlib.pyplot as plt
import matplotlib.patches as patches

fig, ax = plt.subplots()

# 绘制图形
ax.plot([1, 2, 3, 4, 5], [1, 4, 9, 16, 25], 'r-')

# 添加自定义边框
rect = patches.Rectangle((2, 4), 1, 5, linewidth=2, edgecolor='blue', facecolor='none')
ax.add_patch(rect)

plt.show()

import matplotlib.pyplot as plt
import matplotlib.patches as patches

fig, ax = plt.subplots()

ax.plot([1, 2, 3, 4, 5], [1, 4, 9, 16, 25], 'r-')

rect = patches.Rectangle((2, 4), 1, 5, linewidth=2, edgecolor='blue', facecolor='none')
ax.add_patch(rect)

plt.show()