matplotlib不均匀组大小条形图并排显示

import matplotlib.pyplot as plt

# 定义不同组的数据
group1 = [1, 2, 3]
group2 = [4, 5]
group3 = [6, 7, 8, 9]

# 计算每组数据的宽度
width1 = 0.3
width2 = 0.2
width3 = 0.4

# 创建子图
fig, ax = plt.subplots()

# 绘制条形图
ax.bar(range(len(group1)), group1, width=width1, align='center', label='Group 1')
ax.bar(range(len(group2)), group2, width=width2, align='edge', label='Group 2')
ax.bar(range(len(group3)), group3, width=width3, align='edge', label='Group 3')

# 设置x轴标签和标题
ax.set_xticks(range(max(len(group1), len(group2), len(group3))))
ax.set_xticklabels(['A', 'B', 'C', 'D'])
ax.set_xlabel('Groups')
ax.set_ylabel('Values')
ax.set_title('Uneven Group Size Bar Chart')

# 添加图例
ax.legend()

# 显示图表
plt.show()