auto save

diy.py

@@ -4,7 +4,7 @@ file1.write('小兰；12本')
 file1.close()
 with open(r'C:\Users\Administrator\Desktop\test.txt','a',encoding='utf-8') as file1:
     file.write('c\n')
-new-data="
+new_data="
 with open(r'C:\Users\Administrator\Desktop\test.txt','r',encoding='utf-8') as file1:
     for data in file1:
         if '李强；10本' in data: