auto save

diy.py

@@ -2,6 +2,11 @@
 # file = open('D:/data.txt','w',encoding='utf-8')
 # file.write('小兰：12本\n小丽：11本\n李文：9本\n张伟：16本\n')
 # file.close()
-with open('d:/data.txt','a',encoding='utf-8') as file:
-    file.write('小强：20本')
-    
\ No newline at end of file
+# with open('d:/data.txt','a',encoding='utf-8') as file:
+#     file.write('小强：20本')
+with open('d:/data.txt','r',encoding='utf-8') as file:
+    for data in file:
+        if '小强：20本' in data:
+            print('找到数据了')
+
+