save project

diy.py

@@ -14,3 +14,5 @@ with open(r"C:\Users\windows\Desktop\juanzeng.txt",'r',encoding='utf-8') as file
             print("数据在文件中")
             data=data.replace("小兰：12本","小兰：13本")
         new_data+=data
+with open(r"C:\Users\windows\Desktop\juanzeng.txt",'w',encoding='utf-8') as file:
+    file.write(new_data)