auto save

diy.py

 with open(r'c:\Users\21901\Documents\lesson13-1\sales_list.txt','r',encoding='utf-8') as file1:
 with open(r'c:\Users\21901\Documents\lesson13-1\sales_list.txt','r',encoding='utf-8') as file1:
     a = file1.readlines()
     a = file1.readlines()
+final_sum=[]
 for i in a:
 for i in a:
     data=i.split()
     data=i.split()
     sum=0
     sum=0
     for sales in data[1:]:
     for sales in data[1:]:
         sum=sum+int(sales)
         sum=sum+int(sales)
-    result=data[0]+str(sum)
-    print(result)
+    result=data[0]+str(sum)+'\n'
+    print(result)
\ No newline at end of file
+ with open(r'c:\Users\21901\Documents\lesson13-1\sales_list.txt','a',encoding='utf-8') as file1:
+     file1.writables(result)   
\ No newline at end of file