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\CM\Desktop\book.txt','a',encoding='utf-8') as file:
-    file.write('小强，999999999本\n')
-    file.write('李敏，10本\n')
\ No newline at end of file
+ with open(r'C:\Users\CM\Desktop\book.txt','a',encoding='utf-8') as file:
+#     file.write('小强，999999999本\n')
+#     file.write('李敏，10本\n')
+    for date in filel:
+        if '小强:10本'in data:
+            print('小强以在文件中')
+        if '小兰:12本'in data:
+            print('小兰已在文件中')
\ No newline at end of file