python2.7 The code cannot be saved after adding comments

Recently you need to learn about Python, and then start learning that the editing environment used by Python comes with the idle

Python notes are using the #

And then I add a comment to the code

#Python的注释是这个字符

Discovery is always unable to save code, after searching on the network, it is found that comments should be added at the top of the code

#_ *_coding:utf-8 _*_

Because the previous comment has Chinese, you must add a line comment at the top of the code

python2.7 The code cannot be saved after adding comments