How to use the coverage.__version__ function in coverage

def covered_main(includes, require_native=None, required_percentage=100.0):
  """Equivalent of unittest.main(), except that it gathers coverage data, and
  asserts if the test is not at 100% coverage.

  Args:
    includes (list(str) or str) - List of paths to include in coverage report.
      May also be a single path instead of a list.
    require_native (str) - If non-None, will require that
      at least |require_native| version of coverage is installed on the
      system with CTracer.
  """
  try:
    import coverage
    if require_native is not None:
      got_ver = coverage.__version__
      if not getattr(coverage.collector, 'CTracer', None):
        native_error((
            "Native python-coverage module required.\n"
            "Pure-python implementation (version: %s) found: %s"
          ) % (got_ver, coverage), require_native)
      if got_ver < distutils.version.LooseVersion(require_native):
        native_error("Wrong version (%s) found: %s" % (got_ver, coverage),
                     require_native)
  except ImportError:
    if require_native is None:
      sys.path.insert(0, os.path.join(ROOT_PATH, 'third_party'))
      import coverage
    else:
      print ("ERROR: python-coverage (%s) is required to be installed on your "
             "PYTHONPATH to run this test." % require_native)
      sys.exit(1)

def _validate_options(self):
        if (self.options.coverage_xml or self.options.coverage_html) and \
                not self.options.coverage:
            self.options.coverage = True

        if self.options.coverage is True and COVERAGE_AVAILABLE is False:
            self.error(
                'Cannot run tests with coverage report. '
                'Please install coverage>=3.5.3'
            )

        if self.options.coverage is True:
            coverage_version = tuple([
                int(part) for part in re.search(
                    r'([0-9.]+)', coverage.__version__).group(0).split('.')
            ])
            if coverage_version < (3, 5, 3):
                # Should we just print the error instead of exiting?
                self.error(
                    'Versions lower than 3.5.3 of the coverage library are '
                    'know to produce incorrect results. Please consider '
                    'upgrading...'
                )
        SaltTestingParser._validate_options(self)

def test_html_delta_from_coverage_version_change(self):
        # HTML generation can create only the files that have changed.
        # In this case, everything changes because the coverage.py version has
        # changed.
        self.create_initial_files()
        self.run_coverage()
        index1 = self.get_html_index_content()

        # "Upgrade" coverage.py!
        coverage.__version__ = "XYZZY"

        self.run_coverage()

        # All the files have been reported again.
        self.assert_htmlcov_files_exist()
        assert "htmlcov/index.html" in self.files_written
        assert "htmlcov/helper1_py.html" in self.files_written
        assert "htmlcov/helper2_py.html" in self.files_written
        assert "htmlcov/main_file_py.html" in self.files_written

        index2 = self.get_html_index_content()
        fixed_index2 = index2.replace("XYZZY", self.real_coverage_version)
        self.assertMultiLineEqual(index1, fixed_index2)

if options.bisect_repo and not options.known_good_rev:
        parser.error("--bisect-repo cannot be used without --known-good-rev")

    global useipv6
    if options.ipv6:
        useipv6 = checksocketfamily("AF_INET6")
    else:
        # only use IPv6 if IPv4 is unavailable and IPv6 is available
        useipv6 = (not checksocketfamily("AF_INET")) and checksocketfamily("AF_INET6")

    options.anycoverage = options.cover or options.annotate or options.htmlcov
    if options.anycoverage:
        try:
            import coverage

            covver = version.StrictVersion(coverage.__version__).version
            if covver < (3, 3):
                parser.error("coverage options require coverage 3.3 or later")
        except ImportError:
            parser.error("coverage options now require the coverage package")

    if options.anycoverage and options.local:
        # this needs some path mangling somewhere, I guess
        parser.error("sorry, coverage options do not work when --local is specified")

    if options.anycoverage and options.with_hg:
        parser.error("sorry, coverage options do not work when --with-hg is specified")

    global verbose
    if options.verbose:
        verbose = ""

def test_metadata(self):
        status, output = self.run_command_status(
            "python setup.py --description --version --url --author"
            )
        self.assertEqual(status, 0)
        out = output.splitlines()
        self.assertIn("measurement", out[0])
        self.assertEqual(coverage.__version__, out[1])
        self.assertIn("github.com/nedbat/coveragepy", out[2])
        self.assertIn("Ned Batchelder", out[3])

self._init()
        self._post_init()

        def plugin_info(plugins):
            """Make an entry for the sys_info from a list of plug-ins."""
            entries = []
            for plugin in plugins:
                entry = plugin._coverage_plugin_name
                if not plugin._coverage_enabled:
                    entry += " (disabled)"
                entries.append(entry)
            return entries

        info = [
            ('version', covmod.__version__),
            ('coverage', covmod.__file__),
            ('tracer', self._collector.tracer_name() if self._collector else "-none-"),
            ('CTracer', 'available' if CTracer else "unavailable"),
            ('plugins.file_tracers', plugin_info(self._plugins.file_tracers)),
            ('plugins.configurers', plugin_info(self._plugins.configurers)),
            ('plugins.context_switchers', plugin_info(self._plugins.context_switchers)),
            ('configs_attempted', self.config.attempted_config_files),
            ('configs_read', self.config.config_files_read),
            ('config_file', self.config.config_file),
            ('config_contents',
                repr(self.config._config_contents)
                if self.config._config_contents
                else '-none-'
            ),
            ('data_file', self._data.data_filename() if self._data is not None else "-none-"),
            ('python', sys.version.replace('\n', '')),

os.environ['COVERAGE_FILE'] = sys.argv[1]
            del sys.argv[1]

    try:
        import coverage #@UnresolvedImport
    except:
        sys.stderr.write('Error: coverage module could not be imported\n')
        sys.stderr.write('Please make sure that the coverage module '
                         '(http://nedbatchelder.com/code/coverage/)\n')
        sys.stderr.write('is properly installed in your interpreter: %s\n' % (sys.executable,))

        import traceback;traceback.print_exc()
        return

    if hasattr(coverage, '__version__'):
        version = tuple(map(int, coverage.__version__.split('.')[:2]))
        if version < (4, 3):
            sys.stderr.write('Error: minimum supported coverage version is 4.3.'
                             '\nFound: %s\nLocation: %s\n' 
                             % ('.'.join(str(x) for x in version), coverage.__file__))
            sys.exit(1)
    else:
        sys.stderr.write('Warning: Could not determine version of python module coverage.'
                         '\nEnsure coverage version is >= 4.3\n')

    from coverage.cmdline import main #@UnresolvedImport

    if files is not None:
        sys.argv.append('xml')
        sys.argv += files

    main()

worker_type=hl(klass.WORKER_TYPE),
        worker_id=hlid(options.worker),
        node_id=hlid(options.node),
        realm=hlid(options.realm),
        personality=hl(Personality.NAME),
        worker_class=hltype(klass),
    )
    log.info(
        'Running as PID {pid} on {python}-{reactor}',
        pid=os.getpid(),
        python=platform.python_implementation(),
        reactor=qual(reactor.__class__).split('.')[-1],
    )
    if MEASURING_COVERAGE:
        log.info(hl('Code coverage measurements enabled (coverage={coverage_version}).', color='green', bold=True),
                 coverage_version=coverage.__version__)

    # set process title if requested to
    #
    try:
        import setproctitle
    except ImportError:
        log.debug("Could not set worker process title (setproctitle not installed)")
    else:
        if options.title:
            setproctitle.setproctitle(options.title)
        else:
            setproctitle.setproctitle('crossbar-worker [{}]'.format(options.klass))

    # node directory
    #
    options.cbdir = os.path.abspath(options.cbdir)

def report(self, morfs, outfile=None):
        """Generate a json report for `morfs`.

        `morfs` is a list of modules or file names.

        `outfile` is a file object to write the json to

        """
        outfile = outfile or sys.stdout
        coverage_data = self.coverage.get_data()
        coverage_data.set_query_contexts(self.config.report_contexts)
        self.report_data["meta"] = {
            "version": __version__,
            "timestamp": datetime.datetime.now().isoformat(),
            "branch_coverage": coverage_data.has_arcs(),
            "show_contexts": self.config.json_show_contexts,
        }

        measured_files = {}
        for file_reporter, analysis in get_analysis_to_report(self.coverage, morfs):
            measured_files[file_reporter.relative_filename()] = self.report_one_file(
                coverage_data,
                analysis
            )

        self.report_data["files"] = measured_files

        self.report_data["totals"] = {
            'covered_lines': self.total.n_executed,

"""
        # Initial setup.
        outfile = outfile or sys.stdout

        # Create the DOM that will store the data.
        impl = xml.dom.minidom.getDOMImplementation()
        docType = impl.createDocumentType(
            "coverage", None,
            "http://cobertura.sourceforge.net/xml/coverage-03.dtd"
            )
        self.xml_out = impl.createDocument(None, "coverage", docType)

        # Write header stuff.
        xcoverage = self.xml_out.documentElement
        xcoverage.setAttribute("version", __version__)
        xcoverage.setAttribute("timestamp", str(int(time.time()*1000)))
        xcoverage.appendChild(self.xml_out.createComment(
            " Generated by coverage.py: %s " % __url__
            ))
        xpackages = self.xml_out.createElement("packages")
        xcoverage.appendChild(xpackages)

        # Call xml_file for each file in the data.
        self.packages = {}
        self.report_files(self.xml_file, morfs, config)

        lnum_tot, lhits_tot = 0, 0
        bnum_tot, bhits_tot = 0, 0

        # Populate the XML DOM with the package info.
        for pkg_name in sorted(self.packages.keys()):