auto save

diy.py

-a= open(r"c:\Users\燕子红\Desktop\新建文本文档.txt","w",encoding="utf-8")
+with open(r"c:\Users\燕子红\Documents\lesson13_2\sales_list.txt","r",encoding="utf-8") as file:
\ No newline at end of file
+    a=file.readlines()
+
+for i in a:
+    print(i)
\ No newline at end of file