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()
     #print(a)
+f=[]
 for i in a:
     c=i.split()
    # print(c[0])
     d=0
     for b in c[1:]:
         d+=int(b)
-    print(c[0]+str(d)) 
-with open(r'C:\Users\Administrator\Documents\lesson13-1\sales_list.txt','r',encoding='utf-8') as file:
+        u=c[0]+str(d)+'\n'
+    f.append(u)
+    #print(c[0]+str(d)) 
+with open(r'C:\Users\Administrator\Documents\lesson13-1\new_sales_list.txt','a',encoding='utf-8') as file:
     file.writelines(f)