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\book.txt','w',encoding='utf-8')
-   # file.write("'小兰:12本','小丽:11本','李文:9本','张伟:16本'")
-    #file.close()
-with open(r'C:\Users\Administrator\Desktop\book.txt','a',encoding='utf-8') as file:
-    file.write("'小兰:12本','小丽:11本','李文:9本','张伟:16本'")
-    file.write('12,15')
\ No newline at end of file
+   
+with open(r'C:\Users\Administrator\Desktop\book.txt','r',encoding='utf-8') as file:
+    
+   # file.write('12,15')
+    for data in file:
+        if '12' in data:
+            print('a')
\ No newline at end of file