正确安装了Anaconda3，依旧出现错误：
'Conda' is not recognized as internal or external command
'Python' is not recognized as internal or external command
原因：
On Windows, the PATH environment variable is no longer changed by default, as this can cause trouble with other software. The recommended approach is to instead use Anaconda Navigator or the Anaconda Command Prompt (located in the Start Menu under “Anaconda”) when you wish to use Anaconda software.
新版Anaconda3，不推荐安装时，添加环境路径
解决方法：
我的电脑->属性->环境变量->Path中添加安装路径：
\Anaconda3;
\Anaconda3\Scripts;
\Anaconda3\Library\bin 如下：
