save project

diy.py

@@ -5,6 +5,12 @@
 #file.write('李文:9本',)
 #file.write('张伟:16本')
 #file.close()
-with open(r'C:\Users\Administrator\Desktop\book.txt','a',encoding='utf-8')as file:
-    file.write('小强:12本\n')
-    file.write('李明:15本\n')
\ No newline at end of file
+#with open(r'C:\Users\Administrator\Desktop\book.txt','a',encoding='utf-8')as file:
+    #file.write('小强:12本\n')
+    #file.write('李明:15本\n')
+with open(r'C:\Users\Administrator\Desktop\book.txt','r',encoding='utf-8')as file:
+    for data in file:
+        if '小强:10本'in data:
+            print('数据在文件中')
+        if '小兰:12本'in data:
+            print('数据在文件中')
\ No newline at end of file