install pykechain in the system sitepackages (not a virtualenv)
start a python interpreter
write >>> import pykchain
see the warning:
Python 3.4.4 (default, Mar 15 2016, 14:38:45)
[GCC 4.4.7 20120313 (Red Hat 4.4.7-16)] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import pykechain
/usr/lib/python3.4/site-packages/envparse.py:195: UserWarning: Could not any envfile.
warnings.warn('Could not any envfile.')
>>> exit()
>>> import pykchain
culprit is https://github.com/KE-works/pykechain/blob/master/pykechain/client.py#L21