JupyterLab在使用魔术命令 %matplotlib tk 开启单独窗口显示图形后运行绘图代码报错，这个怎么解决？

Question

源代码如下

import numpy as np
import matplotlib as mpl
import matplotlib.pyplot as plt

# 解决中文显示问题
mpl.rcParams['font.sans-serif'] = ['SimHei']
mpl.rcParams['axes.unicode_minus'] = False

# 设置在jupyter中matplotlib的显示情况
%matplotlib tk

# 一维原始图像
def f1(x):
    return 0.5 * (x - 0.25) ** 2

# 构建数据
X = np.arange(-4, 4.5, 0.05)
Y = np.array(list(map(lambda t: f1(t), X)))

# 画图
plt.figure(facecolor='w')
plt.plot(X, Y, 'r-', linewidth=2)
plt.title(u'函数$y=0.5 * (θ - 0.25)^2$')
plt.show()

执行后，出现卡死的窗口

后台报如下错误

ERROR:tornado.application:Exception in callback functools.partial(<function Kernel.enter_eventloop.<locals>.advance_eventloop at 0x0000020531BB56A8>)
Traceback (most recent call last):
  File "D:\Developer\Anaconda3\lib\site-packages\tornado\ioloop.py", line 743, in _run_callback
    ret = callback()
  File "D:\Developer\Anaconda3\lib\site-packages\ipykernel\kernelbase.py", line 306, in advance_eventloop
    eventloop(self)
  File "D:\Developer\Anaconda3\lib\site-packages\ipykernel\eventloops.py", line 238, in loop_tk
    app.tk.createfilehandler(stream.getsockopt(zmq.FD), READABLE, notifier)
AttributeError: '_tkinter.tkapp' object has no attribute 'createfilehandler'

Answer 1

刚运行了没问题啊