auto save

diy.py

@@ -2,7 +2,10 @@
 #book1=open(r'C:\Users\Administrator\Desktop\book.txt','w',encoding='utf-8')
 #book1.write("'小兰：12本'\n'小丽：11本'\n'李文：9本'\n'张伟：16本\n'")
 #book1.close()
-book1=open(r'C:\Users\Administrator\Desktop\book.txt','w',encoding='utf-8')
-book1.write("'小兰：12本'\n'小丽：11本'\n'李文：9本'\n'张伟：16本\n'")
-book1.close()
-book1=open(r'C:\Users\Administrator\Desktop\book.txt','r',encoding='utf-8')
+#book1=open(r'C:\Users\Administrator\Desktop\book.txt','a',encoding='utf-8')
+#book1.write("'小强：12本'\n'李明：15本'")
+#book1.close()
+with open(r'C:\Users\Administrator\Desktop\book.txt','r',encoding='utf-8') as file:
+    for i in file:
+        if '小强：12本' in i:
+            print("在")