Pyqt5 + Matplotlib Incompatability?

Question

Im trying to display a graph with data generated from a Gui using matplotlib. It does not work if I import QFileDialog and try to do plt.show(block=False) . plt.show() works but naturally, blocks further commands

Ive done fresh pip installs of both pyqt5 and matplotlib in a venv and here is some code to reproduce:

import matplotlib.pyplot as plt

from PyQt5.QtWidgets import QFileDialog

a=[1,2,3]
plt.plot(a)
plt.show(block=False).

Can someone help me get around this? Will this also happen if I try to convert to pyside2?

Answer 1

To solve, use matplotlib's Qt backend:

import matplotlib
matplotlib.use('Qt5Agg')