ImportError: No module named 'Tkinter'

Question

For some reason, I can't use the Tkinter or tkinter module. After running the following command in the python shell

import Tkinter

or

import tkinter

I got this error

ModuleNotFoundError: No module named 'Tkinter'

or

ModuleNotFoundError: No module named 'tkinter'

What could be the reason for and how can we solve it?

Answer 1

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

Answer 2

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.

Answer 3

If you're using python 3.9 on Mac, you can simply install tkinter using brew:

brew install [email protected]

This fixed it for me.

Edit:
As mentioned by others, you can also use the general command to install the latest version:

brew install python-tk