save project

diy.py

 with open(r'c:\Users\Administrator\Documents\lesson13-1\sales_list.txt','r',encoding='utf-8') as file:
     a=file.readlines()
-    
-    for i in a:
+    dsb=[]
+    for s in a:
         b=0
-        i_1=i.split()
-        #print(i_1[1:])
-        for k in i_1[1:]:
+        s_1=s.split()
+        #print(s_1[1:])
+        for k in s_1[1:]:
             b+=int(k)
-        print(b)
\ No newline at end of file
+        #print(b)
+        
+        sb=s_1[0]+str(b)+'\n'
+        #print(sb)
+        dsb.append(sb)   
+with open(r'c:\Users\Administrator\Documents\lesson13-1\sales_list.txt','a',encoding='utf-8') as file1:
+    file1.writelines(dsb)
\ No newline at end of file