auto save

diy.py

+file=open(r'c:\Users\Administrator\Documents\lesson13-1\sales_list.txt','r',encoding='utf-8')
+a=file.readlines()
+for i in a:
+    print(i)
\ No newline at end of file

sales_list.txt

@@ -10,4 +10,4 @@
 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