matplotlib同时绘制条形图和折线图

import matplotlib.pyplot as plt

# 创建图表对象和两个子图
fig, ax1 = plt.subplots()
ax2 = ax1.twinx()

# 绘制条形图
categories = ['A', 'B', 'C', 'D', 'E']
values1 = [10, 15, 7, 12, 9]
ax1.bar(categories, values1, color='blue')

# 绘制折线图
values2 = [5, 8, 3, 6, 4]
ax2.plot(categories, values2, color='red')

# 设置图表标题和轴标签
ax1.set_title('Bar Chart and Line Chart')
ax1.set_xlabel('Categories')
ax1.set_ylabel('Values 1')
ax2.set_ylabel('Values 2')

# 显示图表
plt.show()