Adding a screen-clearing extension ClearWindow to idle is sufficient (see the description of this extension in /issue6143).
Below I say the method of installation and use. First of all, download it (click to download directly, if you can't, you can right click to save it in a format ending in py), put this file in the Python X\Lib\idlelib directory (X is your python version), then find this file (the configuration file for the idle extension) in this directory, open it in notepad (to prevent errors, you can copy a backup before opening it). (you can copy a backup before opening it to prevent errors). Ergo, it may look dense when you open it, so if you can, it's best to use an editor like Notepad++ or vim to open it.
After opening, add these words at the end of the sentence:
[ClearWindow] enable=1 enable_editor=0 enable_shell=1 [ClearWindow_cfgBindings] clear-window=<Control-Key-l>
Then just save and quit.
Open python's idle and see if options has an extra option clear shell window ctrl+L
If this is the case, then it proves that you have successfully installed it, and in the future, if you want to clear the screen directly ctrl+L, you can do it.
The above example of this Python's IDEL to add screen-clearing functionality is all that I have shared with you, and I hope that it will give you a reference, and I hope that you will support me more.