python tkinter出错

Question

用tkinter出现错误，用的是VNC，错误如下：
（tkinter.TclError: couldn't connect to display ":1.0"）

Answer 1

方法：原因是没有X Server，可以在windows下安装Xming程序

不安装Xming的话，python GUI库tkinter无法使用，会报错，如下：

_tkinter.TclError: couldn't connect to display "localhost:10.0"

Answer 2

use a non-interactive backend (see What is a backend?) such as Agg (for PNGs), PDF, SVG or PS. In your figure-generating script, just call the matplotlib.use() directive before importing pylab or pyplot:
import matplotlib
matplotlib.use('TkAgg')
import matplotlib.pyplot as plt
plt.plot([1,2,3])
plt.savefig('myfig')
Note: This answer was in short mentioned in a comment. I put it
here as an answer to increase visibility since it helped me and I was
lucky enough that I decided to read the comments.
也就是在使用plt之前，调用一下matplotlib.use('TkAgg')即可，可以远程显示图像