How to use the fasteners.version.version_string function in fasteners

#source_encoding = 'utf-8-sig'

# The master toctree document.
master_doc = 'index'

# General information about the project.
project = u'Fasteners'
copyright = u'2015, OpenStack Foundation, Yahoo!'
author = u'Joshua Harlow, OpenStack Developers'

# 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 = fasteners_version.version_string()

# The full version, including alpha/beta/rc tags.
release = fasteners_version.version_string()

# 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'

master_doc = 'index'

# General information about the project.
project = u'Fasteners'
copyright = u'2015, OpenStack Foundation, Yahoo!'
author = u'Joshua Harlow, OpenStack Developers'

# 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 = fasteners_version.version_string()

# The full version, including alpha/beta/rc tags.
release = fasteners_version.version_string()

# 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.