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在Mac系统下使用python的同学肯定遇到过这个问题：用matplotlib绘图的时候，窗口总是在最后面。比如我用的vscode编辑代码的，成图窗口总是在vscode后面，需要将vscode窗口缩小一点才能看到绘图结果。这显然不是我们想要的！
解决办法
import matplotlib as mpl
mpl.use('TkAgg')
import matplotlib.pyplot as plt
在import matplotlib as mpl之后进阶着跟一句mpl.use('TkAgg')即可将绘图窗口调到最前面。但是这句代码必须紧跟mpl且不能放在plt之后，比如：
import matplotlib as mpl
import matplotlib.pyplot as plt
mpl.use('TkAgg')
将会提示错误，而且窗口依然在最后面：
This call to matplotlib.use() has no effect because the backend has already
been chosen; matplotlib.use() must be called before pylab, matplotlib.pyplot,
or matplotlib.backends is imported for the first time.
The backend was originally set to 'MacOSX' by the following code:
File "test_MonokaiPro.py", line 3, in <module>
import matplotlib.pyplot as plt
File "/Users/zguo/.pyenv/versions/anaconda3-5.0.1/lib/python3.6/site-packages/matplotlib/pyplot.py", line 69,in <module>
from matplotlib.backends import pylab_setup
File "/Users/zguo/.pyenv/versions/anaconda3-5.0.1/lib/python3.6/site-packages/matplotlib/backends/init.py", line 14, in <module>
line for line in traceback.format_stack()
如何快速运行脚本
安装runner插件，然后设置你喜欢的快捷键，比如我喜欢用shift+enter，聪明的你一下就想到了，没错，这个就是jupyter-notebook的默认运行快捷键！
关注九天学者微信公众号(扫码关注)第一时间获取技术贴更新！
