How to use the pydmd.__version__ function in pydmd

from setuptools import setup, Command
import os
import sys
import pydmd

# Package meta-data.
NAME = pydmd.__title__
DESCRIPTION = 'Python Dynamic Mode Decomposition.'
URL = 'https://github.com/mathLab/PyDMD'
MAIL = pydmd.__mail__
AUTHOR = pydmd.__author__
VERSION = pydmd.__version__
KEYWORDS='dynamic-mode-decomposition dmd mrdmd fbdmd cdmd'

REQUIRED = [
    'future', 'numpy', 'scipy',	'matplotlib',
]

EXTRAS = {
    'docs': ['Sphinx==1.4', 'sphinx_rtd_theme'],
}

LDESCRIPTION = (
    "PyDMD is a Python package that uses Dynamic Mode Decomposition for "
    "a data-driven model simplification based on spatiotemporal coherent "
    "structures.\n"
    "\n"
    "Dynamic Mode Decomposition (DMD) is a model reduction algorithm "

master_doc = 'index'

# General information about the project.
project = u'PyDMD'
copyright = pydmd.__copyright__
author = pydmd.__author__

# autoclass
autoclass_content = 'both'

# The version info for the project you're documenting, acts as replacement for
# |version| and |release|, also used in various other places throughout the
# built documents.
#
# The short X.Y version.
version = pydmd.__version__
# The full version, including alpha/beta/rc tags.
release = version

# The language for content autogenerated by Sphinx. Refer to documentation
# for a list of supported languages.
#
# This is also used if you do content translation via gettext catalogs.
# Usually you set "language" from the command line for these cases.
language = None

# There are two options for replacing |today|: either, you set today to some
# non-false value, then it is used:
#today = ''
# Else, today_fmt is used as the format for a strftime call.
#today_fmt = '%B %d, %Y'