On my Linux Mint 18, I've tried to install Python 3.6.1 beside my 3.5.2. With these commands:
wget https://www.python.org/ftp/python/3.6.1/Python-3.6.1.tar.xz
tar xJf Python-3.6.1.tar.xz
cd Python-3.6.1
./configure
make
make install
The installation was successfully but, now, every time I try to import tkinter, I have the same error:
>>> from tkinter import tk
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'
I've no idea how to get rid of this issue, and how remove the 3.6.1