笔者在第一次安装matplotlib后运行时出现报错。

 import matplotlib as mlb
 from matplotlib import pylab as pl

 x = [1,3,5,7,6,9,10,13,16]
 y = [3,4,5,7,9,0,1,2,3]

 pl.plot(x,y)
 pl.show()

报错内容

RuntimeError: Python is not installed as a framework. The Mac OS X backend will not be able to function correctly if Python is not installed as a framework. See the Python documentation for more information on installing Python as a framework on Mac OS X. Please either reinstall Python as a framework, or try one of the other backends. If you are using (Ana)Conda please install python.app and replace the use of 'python' with 'pythonw'. See 'Working with Matplotlib on OSX' in the Matplotlib FAQ for more information.

解决方法：

1、 打开终端，输入cd ~/.matplotlib

2、新建文件，vi matplotlibrc

3、文件中添加内容，按下i键，然后输入内容 backend: TkAgg ，然后点击esc，输入：号，输入wq，然后回车确定

4、重新运行脚本

结果如下：