use __version__ as version name

hapic/__init__.py

 from hapic.hapic import Hapic
 from hapic.data import HapicData
 
+__version__ = '0.41'
 _hapic_default = Hapic()
 
 with_api_doc = _hapic_default.with_api_doc

setup.py

 from setuptools import find_packages
 from os import path
 import sys
+import hapic
 
 here = path.abspath(path.dirname(__file__))
 
     # Versions should comply with PEP440.  For a discussion on single-sourcing
     # the version across setup.py and the project code, see
     # https://packaging.python.org/en/latest/single_source_version.html
-    version='0.41',
+    version=hapic.__version__,
 
     description='HTTP api input/output manager',
     # long_description=long_description,