save project

diy.py

-with open (r"c:\Users\BBTC\Desktop\sales_list.txt","r",encoding="utf-8") as file:
+with open (r'c:\Users\BBTC\Desktop\sales_list.txt',"r",encoding="utf-8") as file:
     a=file.readlines()
     a=file.readlines()
 for i in a:
 for i in a:
     print(i)    
     print(i)    
\ No newline at end of file