2 added 10 characters in body
source | link

Python + tkinter, 43 bytes

Python 3:

from tkinter import*;Tk().clipboard_clear()

Python 2:

from Tkinter import*;Tk().clipboard_clear()

Python, 43 bytes

Python 3:

from tkinter import*;Tk().clipboard_clear()

Python 2:

from Tkinter import*;Tk().clipboard_clear()

Python + tkinter, 43 bytes

Python 3:

from tkinter import*;Tk().clipboard_clear()

Python 2:

from Tkinter import*;Tk().clipboard_clear()
1
source | link

Python, 43 bytes

Python 3:

from tkinter import*;Tk().clipboard_clear()

Python 2:

from Tkinter import*;Tk().clipboard_clear()