matplotlib error - no module named tkinter

Question

I tried to use the matplotlib package via Pycharm IDE on windows 10. when I run this code:

from matplotlib import pyplot

I get the followin

Answer 1

I had the same issue on Win x86/64 because my custom Python3.7 installation did not include Tcl packages, so just modify or re-install your python

https://www.python.org/downloads/release/python-370/

Answer 2

you can use

import matplotlib
matplotlib.use('agg')
import matplotlib.pyplot as plt

if you dont want to use tkinter at all.

Also dont forget to use %matplotlib inline at the top of your notebook if using one.

EDIT: agg is a different backend like tkinter for matplotlib.

Answer 3

For Windows users, there's no need to download the installer again. Just do the following:

1. Go to start menu, type Apps & features,
2. Search for "python" in the search box,
3. Select the Python version (e.g. Python 3.8.3rc1(32-bit)) and click Modify,
4. On the Modify Setup page click Modify,
5. Tick td/tk and IDLE checkbox (which installs tkinter) and click next.

Wait for installation and you're done.

Answer 4

If you are using python 3.6, this worked for me:

sudo apt-get install python3.6-tk

instead of

sudo apt-get install python3-tk

Which works for other versions of python3

Answer 5

Sometimes (for example in osgeo4w distribution) tkinter is removed.

Try changing matplotlib backend editing matplotlibrc file located in [python install dir]/matplotlib/mpl-data/matplotlibrc changing The backend parameter from backend: TkAgg to something other like backend: Qt4Aggas described here: http://matplotlib.org/faq/usage_faq.html#what-is-a-backend

Answer 6

If you are using fedora then first install tkinter

sudo dnf install python3-tkinter

I don't think you need to import tkinter afterwards I also suggest you to use virtualenv

$ python3 -m venv myvenv
$ source myvenv/bin/activate

And add the necessary packages using pip