auto save

diy.py

@@ -8,12 +8,12 @@ with open(r"C:\Users\10839\Desktop\book.txt",'r',encoding='utf-8')as file:
     a=file.read()
     print(a)
 new_data=''
-with open(r"C:\Users\10839\Desktop\book.txt",'',encoding='utf-8')as file:
+with open(r"C:\Users\10839\Desktop\book.txt",'r',encoding='utf-8')as file:
     for data in file:
         if '小兰：12本' in data:
             #print('数据找到了)
             data=data.replace('小兰：12本','小兰：21本')
-        print(data)
+        #print(data)
         new_data+=data
 with open(r"C:\Users\10839\Desktop\book.txt",'w',encoding='utf-8')as file:
     file.write(new_data)
\ No newline at end of file

test.py

+with open(r'c:\Users\10839\Desktop\test1.txt','w',encoding='utf-8')as file:
+    file.write('锦瑟\n')
+    file.write('宋 李商隐\n')
+ 
+