“UserWarning: Matplotlib is currently using agg, which is a non-GUI backend, so cannot show the figure.” when plotting figure with pyplot on Pycharm

Question

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

Answer 1

You can change the matplotlib using backend using the from agg to Tkinter TKAgg using command

matplotlib.use('TKAgg',warn=False, force=True)