save project

diy.py

 with open(r'c:\Users\86135\Documents\lesson13-1\sales_list.txt') as file:
     a=file.readlines()
+final_sum=[]
 for i in a:
     data=i.split()
     sum=e
     for i in data
         sum=sum+str(b)
-    result=data[0](sum)
-    print(result)
\ No newline at end of file
+    result=data[0](sum)+'\n'
+    final_sum.append
+while open(r'c:\Users\86135\Documents\lesson13-1\sales_list.txt'.'a',encoding='utf-8')
+    file.writelines(final_)
+    
\ No newline at end of file

sales_list.txt

@@ -10,4 +10,6 @@
 刘若若 11 11 13 11 20 15 13 29 24 
 刘阳 11 15 22 11 23 26 22 15 17 52 12
 王胜男 27 15 15 26 13 12 15
-王娇 12 11 12 12 15 35 23 11
\ No newline at end of file
+王娇 12 11 12 12 15 35 23 11
+
+