在python中，如何以自动方式将打印输出和绘图一起保存到任意文件格式的单个文件中？

import matplotlib.pyplot as plt
from matplotlib.backends.backend_agg import FigureCanvasAgg as FigureCanvas

fig = plt.figure()
canvas = FigureCanvas(fig)
ax = fig.add_subplot(111)

# 添加打印输出到图形对象
ax.text(0.5, 0.5, 'Hello, World!', ha='center', va='center', fontsize=12, color='red')

# 添加绘图到图形对象
x = [1, 2, 3, 4, 5]
y = [1, 4, 9, 16, 25]
ax.plot(x, y)

# 绘图完成后关闭图形对象
plt.close(fig)

canvas.print_figure('output.png')