save project

diy.py

 # 写入同学们的捐赠明细：'小兰：12本'、'小丽：11本'、'李文：9本'、'张伟：16本'
-file=open(r"C:\Users\Administrator\Desktop\level3-lesson8-diy4,book.txt",'a',encoding='utf-8')
+with open(r"C:\Users\Administrator\Desktop\level3-lesson8-diy4,book.txt",'r',encoding='utf-8') as file1:
+    for data in file1:
+        if '小兰:12本' in data:
+            print('数据在文件中')
 file.write('小兰:12本')
 file.write('小丽:11本')
 file.write('李文:9本')