anaconda+tensorflow-gpu+matplotlib matplotlib无法绘图

import matplotlib

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

plt.plot([1,2,3,4])

plt.ylabel('some numbers')

plt.show()

运行上述代码，得出以下错误

ImportError: Cannot load backend 'TkAgg' which requires the 'tk' interactive framework, as 'headless' is currently running

matplotlib的版本号是3.2.2，
调用 matplot.get_backend()得到结果'agg'
但是使用conda list命令还是可以看到tk包已经安装了

https://blog.csdn.net/tony2278/article/details/82916995