Python and Tkinter

gistfile1.txt

03:59:23:~/simplegui$ sudo apt-get install python-tk
Reading package lists... Done
Building dependency tree       
Reading state information... Done
python-tk is already the newest version (2.7.15~rc1-1).
python-tk set to manually installed.
0 upgraded, 0 newly installed, 0 to remove and 6 not upgraded.
04:40:39:~/simplegui$ sudo apt-get install python3-tk
Reading package lists... Done
Building dependency tree       
Reading state information... Done
python3-tk is already the newest version (3.6.5-3).
0 upgraded, 0 newly installed, 0 to remove and 6 not upgraded.
04:40:48:~/simplegui$ python
Python 2.7.11 (default, Jun 13 2016, 12:01:09) 
[GCC 5.3.1 20160413] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import tkinter
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ImportError: No module named tkinter
>>> import _tkinter
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ImportError: No module named _tkinter
>>> 
04:41:11:~/simplegui$ python3
Python 3.5.0 (default, Nov 19 2015, 13:47:18) 
[GCC 4.8.4] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import tkinter
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  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'
>>>