本级系统：ubuntu 20.04
compaq电脑cq40
import numpy as np
import matplotlib.pyplot as mp
x=np.array([1,2,3,4,5,6])
y=np.array([28,83,91,45,32,12])
mp.plot(x, y)
mp.show()
qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in "" even though it was found.
This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem.
Available platform plugins are: eglfs, linuxfb, minimal, minimalegl, offscreen, vnc, wayland-egl, wayland, wayland-xcomposite-egl, wayland-xcomposite-glx, webgl, xcb.
