假设我们有两个数据框df1和df2，需要对它们进行比较并展示差异和缺失值，可以借助pandas和openpyxl模块实现。下面是具体的代码示例：

import pandas as pd
from openpyxl import Workbook
from openpyxl.utils.dataframe import dataframe_to_rows

# 创建两个数据框
df1 = pd.DataFrame({'A': [1, 2, 3], 'B': [4, 5, 6], 'C': [7, 8, 9]})
df2 = pd.DataFrame({'A': [1, 2, 4], 'B': [4, 5, 7], 'D': [10, 11, 12]})

# 计算两个数据框的差异
diff_df = pd.concat([df1, df2]).drop_duplicates(keep=False)

# 计算df1和df2的缺失值
missing_1 = pd.concat([df1, diff_df]).drop_duplicates(keep=False)
missing_2 = pd.concat([df2, diff_df]).drop_duplicates(keep=False)

# 将结果导出到Excel
wb = Workbook()
ws_diff = wb.active
ws_diff.title = '差异'

# 写入差异数据
for r in dataframe_to_rows(diff_df, index=True, header=True):
    ws_diff.append(r)
    
ws_missing_1 = wb.create_sheet('df1缺失值')
ws_missing_2 = wb.create_sheet('df2缺失值')

# 写入df1的缺失值
for r in dataframe_to_rows(missing_1, index=True, header=True):
    ws_missing_1.append(r)

# 写入df2的缺失值
for r in dataframe_to_rows(missing_2, index=True, header=True):
    ws_missing_2.append(r)

# 保存Excel文件
wb.save('比较结果.xlsx')

运行以上代码后，将会生成一个名为“比较