auto save

diy.py

@@ -2,10 +2,13 @@
 #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','a',encoding='utf-8')
+#book1=open(r'C:\Uutf-8') as file:
 #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")
+new_date = ""
+with open(r'C:\Users\Administrator\Desktop\book.txt','w',encoding='utf-8') as file:
+    for i in :
+        if '小强:12本'in file:
+            i=i.replace('小强:12本','小强:13本')
+new_date+=file
+print(new_date)
\ No newline at end of file