Tkinter found on Python 3 but not on Python2.7 - python-3.x

Question

I am on CentOs7. I installed tk, tk-devel, tkinter through yum. I can import tkinter in Python 3, but not in Python 2.7. Any ideas?
Success in Python 3 (Anaconda):
Python 3.6.3 |Anaconda custom (64-bit)| (default, Oct 13 2017, 12:02:49)
[GCC 7.2.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import tkinter
>>>
But fail on Python 2.7 (CentOS default):
Python 2.7.5 (default, Aug 4 2017, 00:39:18)
[GCC 4.8.5 20150623 (Red Hat 4.8.5-16)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import Tkinter
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/usr/lib64/python2.7/lib-tk/Tkinter.py", line 39, in <module>
import _tkinter # If this fails your Python may not be configured for Tk
ImportError: libTix.so: cannot open shared object file: No such file or directory
I read some answers said
If it fails with "No module named _tkinter", your Python configuration needs to be modified to include this module (which is an extension module implemented in C). Do not edit Modules/Setup (it is out of date). You may have to install Tcl and Tk (when using RPM, install the -devel RPMs as well) and/or edit the setup.py script to point to the right locations where Tcl/Tk is installed. If you install Tcl/Tk in the default locations, simply rerunning "make" should build the _tkinter extension.
I have reinstalled tk, tk-devel and tkinter through yum, but the problem is same.
How can I configure it to work on Python 2.7?

Answer 1

For python 3 use:
import tkinter
For python 2 use:
import Tkinter
If these do not work install with, for python 3:
sudo apt-get install python3-tk
or, for python 2:
sudo apt-get install python-tk
you can find more details here

Answer 2

For python2.7 try
import Tkinter
With a capital T. It should already be pre-installed in default centos 7 python setup, if not do yum install tkinter