save project

diy.py

@@ -2,7 +2,12 @@
 # file1=open(r'C:\Users\Administrator\Desktop\text.txt','w',encoding='utf-8')
 # file1.write('小兰：12本\n')
 # file1.close()
+new_data=''
 with open(r'C:\Users\Administrator\Desktop\text.txt','r',encoding='utf-8') as file1:
     for data in file1:
         if '小兰：12本' in data:
-            print('数据在文件中')
\ No newline at end of file
+            data=data.replace('小兰：12本','小兰：14本')
+        new_data +=data
+
+with open(r'C:\Users\Administrator\Desktop\text.txt','w',encoding='utf-8') as file1:
+    file1.write(new_data)
\ No newline at end of file