save project

diy.py

@@ -8,4 +8,11 @@ file.close()
 
 
 with open(r'C:\Users\Administrator\Desktop\w.txt','a',encoding='utf-8') as file:
 with open(r'C:\Users\Administrator\Desktop\w.txt','a',encoding='utf-8') as file:
     file.write('小强：10本\n')
     file.write('小强：10本\n')
-    file.write('李明：15本\n')
+    file.write('李明：15本\n')
\ No newline at end of file
+
+with open(r'C:\Users\Administrator\Desktop\w.txt','r',encoding='utf-8') as file:
+    for data in file:
+        if '小强：10本' in data: 
+            print('小强数据文件中')
+        if '小兰：12本' in data:  
+            print('小兰数据文件中')
\ No newline at end of file