save project

diy.py

 # with open(r'C:\Users\丽达玛酷8号\Desktop\a.text','a',encoding='utf-8') as file:
 #     file.write('小丽:11本\n')
 #     file.write('小强:12本\n')
+y=''
 with open(r'C:\Users\丽达玛酷8号\Desktop\a.text','r',encoding='utf-8') as file:
     for i in file:
         if "小兰:12本" in i:
-            print("在")
+            i.replace('小强:12本','小强:11本')    
         if "李明:15本" in i:
-            print("在")
-
+            i.replace('小兰:12本','小兰:14本')
+        y+=i
\ No newline at end of file