auto save

diy.py

-with open(r'c:\Users\lenovo\Documents\lesson13_1\sales_list.txt','r',encoding='utf-8') as b:
+with open(r'c:\Users\lenovo\Documents\lesson13_2\sales_list.txt','r',encoding='utf-8') as b:
     a=b.readlines()
     a=b.readlines()
-for s in a:
-    print(s)
+for i in a:
+    print(i)
\ No newline at end of file

sales_list.txt

+悟空 12 15 11 12 11 12 13 21 27 12 15 30
+诺依 21 29 15 21 21 21 29 30 12 13 12 24 52 27 26 15