auto save

diy.py

 with open(r'c:\Users\Administrator\Documents\lesson13-1\sales_list.txt','r',encoding='UTF-8') as f:
 with open(r'c:\Users\Administrator\Documents\lesson13-1\sales_list.txt','r',encoding='UTF-8') as f:
-    for i in f:
+    a=f.readlines()
+    # print(a)
+for i in a:
     print(i)
     print(i)
-    

sumlist.txt

+悟空:348
+诺依:380
+小贝:182
+李丽:201
+宋扬:107
+王明:245
+李强:164
+孙小白:222
+苏琪:137
+刘若若:147
+刘阳:226
+王胜男:123
+王娇:131