IDLE lost from Windows menu !

[Alec Taylor]

Search for the following key in regedit: HKEY_CLASSES_ROOT\*\shell

Right click on “shell”, choose create new key.

Name it “Edit with IDLE"

Create a new key below that one and call it “command.”

Now double click on the (Default) value that you will find in the
right hand pane, and type in the following: python.exe %1

(or if you don't have it in your PATH, then put in the absolute python
directory, ie: C:\Python27\bin\python.exe)