在处理气象数据时，在xlsx文件末尾添加txt数据

 import os

    
 import pandas as pd
    
  
    
 # Path to the directory containing .xlsx files with 1951-1987 data
    
 xlsx_dir = r'D:\气象数据\气象数据\1951-1987\气温\新疆'
    
  
    
 # Path to the directory containing .txt files with 1988-2018 data
    
 txt_dir = r'D:\气象数据\气象数据\1988-2018\气温\新疆气温'
    
  
    
 # List all .xlsx files in the directory
    
 xlsx_files = os.listdir(xlsx_dir)
    
  
    
 # Iterate over each .xlsx file
    
 for xlsx_filename in xlsx_files:
    
     if xlsx_filename.endswith('.xlsx'):
    
     full_xlsx_path = os.path.join(xlsx_dir, xlsx_filename)