在条形图python上绘制图形并包含缺少的数值

import matplotlib.pyplot as plt

# 定义数据
categories = ['A', 'B', 'C', 'D', 'E']
values = [10, 15, None, 20, 25]

# 绘制条形图
plt.bar(categories, values)

# 添加缺少的数值
for i, value in enumerate(values):
    if value is None:
        plt.text(i, 0, 'Missing', ha='center', va='bottom')

# 设置图形标题和坐标轴标签
plt.title('Bar Chart with Missing Values')
plt.xlabel('Categories')
plt.ylabel('Values')

# 显示图形
plt.show()