python3 untitled2.py 
Traceback (most recent call last):
  File "untitled2.py", line 1, in <module>
    import tkinter
  File "/usr/local/lib/python3.5/tkinter/__init__.py", line 35, in <module>
    import _tkinter # If this fails your Python may not be configured for Tk
ImportError: No module named '_tkinter'