save project

diy.py

-#方法一:
 # 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\maku.txt','a',encoding='utf-8')
-#file.write('小强:10本\n')
-#file.write('小明:15本\n')
-#file.close()
-#方法二:
-with open(r'C:\Users\Administrator\Desktop\maku.txt','a',encoding='utf-8') as file:
-    file.write('小强:10本\n')
-    file.write('小明:15本\n')
\ No newline at end of file
+with open(r'C:\Users\Administrator\Desktop\maku.txt','r',encoding='utf-8')as file:
+    for data in file:
+        if '小强:10本' in data:
+            print('存在此数据')
+        if '小兰:12本' in data:
+            print('存在此数据') 
\ No newline at end of file