auto save

diy.py

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

sales_list.txt

-dfhsjsadiofueweryiwiuroei0u9iwerue0qwi9eu84tguewi9ru
\ No newline at end of file