save project

diy.py

 with open(r'C:\Users\Administrator\Documents\lesson13-1\sales_list.txt','r',encoding='utf-8') as life:
 with open(r'C:\Users\Administrator\Documents\lesson13-1\sales_list.txt','r',encoding='utf-8') as life:
     a=life.readlines()
     a=life.readlines()
+    final_sum=[]
     #print(a)
     #print(a)
     for i in a:
     for i in a:
         data=i.split()
         data=i.split()
@@ -7,5 +8,8 @@ with open(r'C:\Users\Administrator\Documents\lesson13-1\sales_list.txt','r',enco
         sum=0
         sum=0
         for j in data[1:]:
         for j in data[1:]:
             sum=sum+int(j)
             sum=sum+int(j)
-        result=data[0]+str(sum)
+        result=data[0]+str(sum)+'\n'
         print(result)
         print(result)
+        final_sum.append(result)
+with open(r'C:\Users\Administrator\Documents\lesson13-1\sales_list.txt','a',encoding='utf-8') as life:
+    life.writelines(final_sum)
\ No newline at end of file