save project

diy.py

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