auto save

diy.py

 with open(r'C:\Users\Administrator\Desktop\sales_list.txt ','r',encoding='utf-8') as file:
 with open(r'C:\Users\Administrator\Desktop\sales_list.txt ','r',encoding='utf-8') as file:
     a=file.readlines()
     a=file.readlines()
-
 for i in a:
 for i in a:
     d=i.split()
     d=i.split()
     u=0
     u=0