ImportError: No module named 'Tkinter'

You probably need to install it using something similar to the following:

• For Ubuntu or other distros with Apt:

  sudo apt-get install python3-tk
  

• For Fedora:

  sudo dnf install python3-tkinter
  

You can also mention a Python version number like this:

• sudo apt-get install python3.7-tk
  

• sudo dnf install python3-tkinter-3.6.6-1.fc28.x86_64
  

Finally, import tkinter (for Python 3) or Tkinter (for Python 2), or choose at runtime based on the version number of the Python interpreter (for compatibility with both):

import sys
if sys.version_info[0] == 3:
    import tkinter as tk
else:
    import Tkinter as tk

As you are using Python 3, the module has been renamed to tkinter, as stated in the documentation:

Note Tkinter has been renamed to tkinter in Python 3. The 2to3 tool will automatically adapt imports when converting your sources to Python 3.