I am trying to plot a simple graph using pyplot, e.g.:
import matplotlib.pyplot as plt plt.plot([1,2,3],[5,7,4]) plt.show()
but the figure does not appear and I get the following message:
UserWarning: Matplotlib is currently using agg, which is a non-GUI backend, so cannot show the figure.
I saw in several places that one had to change the configuration of matplotlib using the following:
import matplotlib matplotlib.use("TkAgg") import matplotlib.pyplot as plt
I did this, but then got an error message because it cannot find a module:
ModuleNotFoundError: No module named "tkinter"
Then, I tried to install "tkinter" using
pip install tkinter (inside the virtual environment), but it does not find it:
Collecting tkinter Could not find a version that satisfies the requirement tkinter (from versions: ) No matching distribution found for tkinter
I should also mention that I am running all this on Pycharm Community Edition IDE using a virtual environment, and that my operating system is Linux/Ubuntu 18.04.
I would like to know how I can solve this problem in order to be able to display the graph.