How to use the sshtunnel.__version__ function in sshtunnel

def test_show_running_version(self):
        """ Test that _cli_main() function quits when Enter is pressed """
        with capture_stdout_stderr() as (out, err):
            with self.assertRaises(SystemExit):
                sshtunnel._cli_main(args=['-V'])
        if sys.version_info < (3, 4):
            version = err.getvalue().split()[-1]
        else:
            version = out.getvalue().split()[-1]
        self.assertEqual(version,
                         sshtunnel.__version__)

#source_encoding = 'utf-8-sig'

# The master toctree document.
master_doc = 'index'

# General information about the project.
project = 'sshtunnel'
copyright = '2014-2019, Pahaz Blinov and contributors'
author = 'Pahaz Blinov'

# 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 = sshtunnel.__version__
# The full version, including alpha/beta/rc tags.
release = sshtunnel.__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'

# The master toctree document.
master_doc = 'index'

# General information about the project.
project = 'sshtunnel'
copyright = '2014-2019, Pahaz Blinov and contributors'
author = 'Pahaz Blinov'

# 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 = sshtunnel.__version__
# The full version, including alpha/beta/rc tags.
release = sshtunnel.__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'

# List of patterns, relative to source directory, that match files and
# directories to ignore when looking for source files.