save project

diy.py

@@ -12,7 +12,18 @@
 with open(r"C:\Users\Administrator\Desktop\test.txt",'r',encoding ='utf-8') as a:
     for data in a:
         if'小兰：12本'in data:
-            print("小兰在文件中")
+            data=data.replace("小兰：12本,小兰：13本")
+        new_data +=data
+with open(r"C:\Users\Administrator\Desktop\test.txt",'w',encoding ='utf-8') as a:
+    a.write(new_data)
+
+
+with open(r"C:\Users\Administrator\Desktop\test.txt",'r',encoding ='utf-8') as a:
+    c=a.read()
+    print(c)
+
+
+