save project

sbsbsbsbsb.py

 with open(r'C:\Users\Administrator\Desktop\新建文件夹\sb.txt','w',encoding='utf-8') as file:
-    file.write('小兰:12本\n')
\ No newline at end of file
+    for data in file:
+        if '小兰:10本'in data:
+            print('数据在文件夹中')
+        else: 
+            print('数据不在文件夹中')           
\ No newline at end of file