I’m just running from my command line this is what I’m doing:
(fastai) kevinlu@Kevins-MBP:~/Documents/Move37/JeanApp (master *) $ which python
python is /Users/kevinlu/miniconda3/envs/fastai/bin/python

Then I run python
Python 3.6.2 |Continuum Analytics, Inc.| (default, Jul 20 2017, 13:14:59) 
[GCC 4.2.1 Compatible Apple LLVM 6.0 (clang-600.0.57)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> import sys
>>> print(sys.path)
['', '/Users/kevinlu/miniconda3/envs/fastai/lib/python36.zip', '/Users/kevinlu/miniconda3/envs/fastai/lib/python3.6', '/Users/kevinlu/miniconda3/envs/fastai/lib/python3.6/lib-dynload', '/Users/kevinlu/miniconda3/envs/fastai/lib/python3.6/site-packages']