matplotlib - no module named tkinter in Blender python

Question

I am trying to write a blender script for which I need matplotlib.pyplot. When trying to import matplotlib.pyplot as plt I get the following error:

ImportError: No module named 'tkinter'

However, using the installed anaconda version, the import is no problem. The common solution to run

sudo apt-get install python3-tk

does not solve the problem. I tried to add the Path to tkinter with:

sys.path.append('/usr/lib/python3.4/tkinter/')

sys.path.append('/home/<username>/anaconda3/lib/python3.6/tkinter/')

Both commands did not resolve the error.

Did you try to install tkinter using pip: "pip install tkinter" — Tin Luu
– Tin Luu, Commented Aug 31, 2017 at 10:51
I was not aware that this is possible. Using tkinter or python3-tk both result in Could not find a version that satisfies the requirement tkinter (from versions: ) No matching distribution found for tkinter — McLawrence
– McLawrence, Commented Aug 31, 2017 at 10:53
Sorry. Just a typo. But same error message from pip. I read that, since it is a C++ package, it cannot be installed via pip — McLawrence
– McLawrence, Commented Aug 31, 2017 at 10:57
I am using anaconda distro, and it run well without above issue :) — Tin Luu
– Tin Luu, Commented Aug 31, 2017 at 11:04

fr_andres · Accepted Answer · 2019-05-09 00:50:09Z

1

I managed to import tkinter (and use it with matplotlib.pyplot) from Blender as I explained here:

https://stackoverflow.com/a/56050748/4511978

Hope it helps!
Andres

answered May 9, 2019 at 0:50

fr_andres

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Lawrence D'Oliveiro · Accepted Answer · 2017-10-18 03:53:16Z

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On Linux, you shouldn’t need to mess around with pip to install tkinter, since it’s a standard Python module. Also the Blender package should use the system Python, so it will have access to all system Python modules.

But ... tkinter is a GUI framework, and trying to use this will conflict with Blender’s own GUI.

Another option might be to use Matplotlib in offscreen-plotting mode, which doesn’t need a GUI.

answered Oct 18, 2017 at 3:53

Lawrence D'Oliveiro

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markroxor · Accepted Answer · 2018-09-04 04:48:53Z

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Try switching the backend from tkinter to agg using -

matplotlib.use('agg')

answered Sep 4, 2018 at 4:48

markroxor

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