I have included matplotlib in my program, I searched about numpy_atlas.dll on google and I seem to be the only one on Earth with this problem.
from setuptools import setup
import py2exe
setup(console=['EulerMethod.py'])
C:\(..obmitted..)>python setup.py py2exe
running py2exe
*** searching for required modules ***
*** parsing results ***
......
...obmitted...
......
*** finding dlls needed ***
error: [Errno 2] No such file or directory: 'numpy-atlas.dll'
This is what worked for me. I found the dll: C:\Python27\Lib\site-packages\numpy\core\numpy-atlas.dll and copied it to the same folder that has the setup.py