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'
-with open(r'C:\Users\23636\Desktop\zixing.txt','a',encoding='utf-8') as zixing:
-    zixing.write('小李:10本\n')
\ No newline at end of file
+with open(r'C:\Users\23636\Desktop\zixing.txt','r',encoding='utf-8') as zixing:
+    for data in zixing:
+        if'小李:10本' in data:
+            print('数据在文件中')
\ No newline at end of file