save project

diy.py

@@ -3,8 +3,14 @@ filter=open(r'C:\Users\Administrator\Desktop\test.txt','w',encoding='utf-8')
 filter.write('小兰: 12本')
 filter.close()
 with open(r'C:\Users\Administrator\Desktop\test.txt','a',encoding='utf-8') as file:
-    filter.write("小强：13本")
+    file.write("小强：10本")
+new_data=''
 with open(r'C:\Users\Administrator\Desktop\test.txt','r',encoding='utf-8') as file:
     for data in file:
-        if "小强:13本" in data:
-            print("数据在")
\ No newline at end of file
+        if "小强：10本" in data:
+            data= data.replace('小强：10本','小强：11本')        
+        new_data+=data
+
+
+with open(r'C:\Users\Administrator\Desktop\test.txt','r',encoding='utf-8') as file:
+    filel.write(new_data)