First aid when EditWithIdle disappears from the Windwos Python right-click menu

When reinstalling after uninstalling for the purpose of initializing the Python environment The Edit With Idle item disappeared from the right-click menu and I was in trouble. My installation version is 3.9.1, but I have not verified whether the same countermeasure is effective for other versions. It is just a reference measure that it worked in my environment Aside from the details, it's about first aid.

Start the registry editor (regedit.exe) in Ctrl + r or the Windwos administration tool in the start menu. Edit the registry Roughly speaking, I created a key so that it becomes the following tree 「HKEY_CLASSES_ROOT」 　↳「**」 　　↳「shell」 　　　↳「edit with idle」 ↳ "command" (existing) REG_SZ "" (your Python installation path) pythonw.exe "-m idlelib"% L "% *"

The following is an export of the created registry key

Windows Registry Editor Version 5.00

[HKEY_CLASSES_ROOT*\shell\edit with idle\command] @ = "" (your Python installation path) pythonw.exe \ "-m idlelib "% L \ "% *"

1. Add edit with idle (you can rewrite it arbitrarily) to HKEY_CLASSES_ROOT \ * \ shell with the new> key in the right-click menu.
2. Add a key to edit with idle and rename it to command
3. Right-click (default) of command and select Modify, and OK with the path of pythonw.exe and -m idlelib \ "% L "% * "as arguments to the data value of the displayed small window. Press to complete

In my environment, right-click on the appropriate file immediately after this setting and edit with idle will be displayed. You can now open the right-clicked file with Idl, but it seems like you can open files other than .py files with Idle. Is it safe to open only text files?