How to use the minimalmodbus.__version__ function in minimalmodbus

def show_test_settings(mode, baudrate, portname):
    _box()
    _box("Hardware test with Delta DTB4824")
    _box("Minimalmodbus version", minimalmodbus.__version__)
    _box(" ")
    _box("Platform", sys.platform)
    _box("Python version", "{}.{}.{}".format(sys.version_info[0], sys.version_info[1], sys.version_info[2]))
    _box("Modbus mode", mode)
    _box("Baudrate (-b)", baudrate)
    _box("Port name (-D)", portname)
    _box("Slave address", SLAVE_ADDRESS)
    _box("Timeout", TIMEOUT)
    _box("Full file path", os.path.abspath(__file__))
    _box()
    _print_out("")

# The master toctree document.
master_doc = 'index'

# General information about the project.
project = 'minimalmodbus'
copyright = time.strftime('%Y') + ', Jonas Berg'

# 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 = minimalmodbus.__version__
# The full version, including alpha/beta/rc tags.
release = minimalmodbus.__version__

# The language for content autogenerated by Sphinx. Refer to documentation
# for a list of supported languages.
#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 = '%Y-%m-%d'

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

# The reST default role (used for this markup: `text`) to use for all documents.

# The encoding of source files.
#source_encoding = 'utf-8-sig'

# The master toctree document.
master_doc = 'index'

# General information about the project.
project = 'minimalmodbus'
copyright = time.strftime('%Y') + ', Jonas Berg'

# 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 = minimalmodbus.__version__
# The full version, including alpha/beta/rc tags.
release = minimalmodbus.__version__

# The language for content autogenerated by Sphinx. Refer to documentation
# for a list of supported languages.
#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 = '%Y-%m-%d'

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

# The encoding of source files.
#source_encoding = 'utf-8-sig'

# The master toctree document.
master_doc = 'index'

# General information about the project.
project = u'MinimalModbus'
copyright = time.strftime('%Y') + ', Jonas Berg'

# 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 = minimalmodbus.__version__
# The full version, including alpha/beta/rc tags.
release = minimalmodbus.__version__

# The language for content autogenerated by Sphinx. Refer to documentation
# for a list of supported languages.
#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.
exclude_patterns = ['_build', 'setup.py', 'tests']

# The master toctree document.
master_doc = 'index'

# General information about the project.
project = u'MinimalModbus'
copyright = time.strftime('%Y') + ', Jonas Berg'

# 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 = minimalmodbus.__version__
# The full version, including alpha/beta/rc tags.
release = minimalmodbus.__version__

# The language for content autogenerated by Sphinx. Refer to documentation
# for a list of supported languages.
#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.
exclude_patterns = ['_build', 'setup.py', 'tests']

# The reST default role (used for this markup: `text`) to use for all