Errors with sudo idle

[Some_Guy]

I'm trying to run idle as a superuser from the desktop (where I'm just logged in as pi), and I'm getting the following:

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pi@raspberrypi ~ $ sudo idle
Invalid MIT-MAGIC-COOKIE-1 keyTraceback (most recent call last):
  File "/usr/bin/idle", line 5, in <module>
    main()
  File "/usr/lib/python2.7/idlelib/PyShell.py", line 1427, in main
    root = Tk(className="Idle")
  File "/usr/lib/python2.7/lib-tk/Tkinter.py", line 1712, in __init__
    self.tk = _tkinter.create(screenName, baseName, className, interactive, wantobjects, useTk, sync, use)
_tkinter.TclError: couldn't connect to display ":0.0"

I do not understand what any of this means. But if I just run idle, it comes up fine. Does anyone know how to get this to work properly?

[B.Goode]

Try with gksudo idle instead.

[AndyD]

Try with gksudo idle instead.

You may need to install it:-

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sudo apt-get update
sudo apt-get install gksu

[Some_Guy]

Thanks!