Can not get NumPy to work on Unix

I can not get numpy to work on my unix script. It works fine in Python but when I go to atom and do the code there and then try to run the code it tells me that there is a ImportError: No module named numpy. I have tried installing numpy in many different ways but nothing is working. It says that numpy is installed so I am not sure why I keep getting this error.

File "/media/sf_sand_box/human_refseq_subsample_9/autocorrelation.py", line 2, in <module> 
import numpy as np
ImportError: No module named numpy 

This is more-than-likely an environmental issue.

I recommend you check your environmental vars and make sure you atom environment has the correct Python environment variables set up.