ubuntu pycharm UserWarning: Matplotlib is currently using agg, which is a non-GUI backend, 问题

sudo apt-get install tcl-dev tk-dev python-tk python3-tk

代码：

import tkinter
import matplotlib
matplotlib.use('TkAgg')
import matplotlib.pyplot as plt
import numpy as np
 
x = np.linspace(-2,2,100)
y1 = 3*x + 4
y2 = x**2
 
plt.plot(x,y1)
plt.plot(x,y2)
 
plt.show()

如果你程序还是有问题，你把这个加在

import matplotlib
matplotlib.use('TkAgg')
import matplotlib.pyplot as plt

plt.show()前边