save project

diy.py

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