https://www.cnblogs.com/geeksongs/p/10648044.html
由于笔者自己经常忘记了如何查看Python的安装路径，又经常会用到Python的安装路径，因此记录一下，我们可以在命令行模式下输入：
>>> import sys
>>> sys.path
['', 'C:\Python27\Lib\idlelib', 'C:\Python27\lib\site-packages\robotframework_selenium2library-1.5.0-py2.7.egg', 'C:\Python27\lib\site-packages\docutils-0.14-py2.7.egg', 'C:\Python27\lib\site-packages\decorator-4.2.1-py2.7.egg', 'C:\Windows\system32\python27.zip', 'C:\Python27\DLLs', 'C:\Python27\lib', 'C:\Python27\lib\plat-win', 'C:\Python27\lib\lib-tk', 'C:\Python27', 'C:\Python27\lib\site-packages', 'C:\Python27\lib\site-packages\win32', 'C:\Python27\lib\site-packages\win32\lib', 'C:\Python27\lib\site-packages\Pythonwin', 'C:\Python27\lib\site-packages\wx-2.8-msw-unicode']
更简单的方法
which python (Linux)
where python (Where)