CENTOS and Python 3.5: ImportError: No module named 'tkinter'

$ python detection_bounding_boxes.py
Traceback (most recent call last):
  File "detection_bounding_boxes.py", line 14, in
    from matplotlib import pyplot as plt
  File "/home/depappas/python_virtual_env/deep_learning/lib/python3.5/site-packages/matplotlib/pyplot.py", line 115, in
    _backend_mod, new_figure_manager, draw_if_interactive, _show = pylab_setup()
  File "/home/depappas/python_virtual_env/deep_learning/lib/python3.5/site-packages/matplotlib/backends/__init__.py", line 32, in pylab_setup
    globals(),locals(),[backend_name],0)
  File "/home/depappas/python_virtual_env/deep_learning/lib/python3.5/site-packages/matplotlib/backends/backend_tkagg.py", line 6, in
    from six.moves import tkinter as Tk
  File "/home/depappas/python_virtual_env/deep_learning/lib/python3.5/site-packages/six.py", line 92, in __get__
    result = self._resolve()
  File "/home/depappas/python_virtual_env/deep_learning/lib/python3.5/site-packages/six.py", line 115, in _resolve
    return _import_module(self.mod)
  File "/home/depappas/python_virtual_env/deep_learning/lib/python3.5/site-packages/six.py", line 82, in _import_module
    __import__(name)
ImportError: No module named 'tkinter'

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yum provides '*/tkinter'

sudo yum install python35u-tkinter-3.5.4-1.ius.centos7.x86_64

python
>>> import tkinter
>>>