save project

diy.py

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