如何在Matplotlib中旋转表头？

import matplotlib.pyplot as plt

fig, ax = plt.subplots()

table = ax.table(cellText=data, colLabels=columns, loc='center')

header_cells = table[0]
for cell in header_cells:
    cell.set_rotation(45)

ax.axis('off')

plt.show()

import matplotlib.pyplot as plt

data = [['A', 'B', 'C'],
        ['1', '2', '3'],
        ['4', '5', '6']]

columns = ('Column 1', 'Column 2', 'Column 3')

fig, ax = plt.subplots()
table = ax.table(cellText=data, colLabels=columns, loc='center')

header_cells = table[0]
for cell in header_cells:
    cell.set_rotation(45)

ax.axis('off')
plt.show()