auto save

diy.py

 with open(r'c:\Users\18725\Documents\lesson13-1\sales_list.txt','r',encoding="utf-8") as file:
     a=file.readlines()
+    f=[]
     for i in a:
         n=i.split()
         z=0
         for s in n[1:]:
             z=z+int(s)
-        print(n[0]+str(z))
+        z=n[0]+str(z)+'\n'
+        f.append(z)
+with open(r'C:\Users\18725\Desktop\name.txt','w',encoding='utf-8') as file1:
+    file1.writelines(f)