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.

For Windows, make sure to check in the Python install the optional feature "tcl/tk and IDLE". Otherwise you get:

ModuleNotFoundError: No module named 'tkinter'

If Python is already installed without this optional feature, you need to amend the installation by launching again the Python installer and selecting Modify.

NB: you won't be able pip install tkinter, don't bother trying!

To install the Tkinter on popular Linux distros:

Debian/Ubuntu:

sudo apt install python3-tk -y  

Fedora:

sudo dnf install -y python3-tkinter

Arch:

sudo pacman -Syu tk --noconfirm 

REHL/CentOS6/CentOS7:

sudo yum install -y python3-tkinter

OpenSUSE:

sudo zypper in -y python-tk