How to use the coverage.results.Numbers function in coverage

def test_pc_covered_str(self):
        # Numbers._precision is a global, which is bad.
        Numbers.set_precision(0)
        n0 = Numbers(n_files=1, n_statements=1000, n_missing=0)
        n1 = Numbers(n_files=1, n_statements=1000, n_missing=1)
        n999 = Numbers(n_files=1, n_statements=1000, n_missing=999)
        n1000 = Numbers(n_files=1, n_statements=1000, n_missing=1000)
        self.assertEqual(n0.pc_covered_str, "100")
        self.assertEqual(n1.pc_covered_str, "99")
        self.assertEqual(n999.pc_covered_str, "1")
        self.assertEqual(n1000.pc_covered_str, "0")

def report(self, morfs, outfile=None):
                if hasattr(self, 'find_code_units'):
                    self.find_code_units(morfs)
                else:
                    self.find_file_reporters(morfs)

                total = Numbers()

                if hasattr(self, 'code_units'):
                    units = self.code_units
                else:
                    units = self.file_reporters

                for cu in units:
                    try:
                        analysis = self.coverage._analyze(cu)
                        nums = analysis.numbers
                        total += nums
                    except KeyboardInterrupt:
                        raise
                    except Exception:
                        if self.config.ignore_errors:
                            continue

def test_covered_ratio(self):
        n = Numbers(n_files=1, n_statements=200, n_missing=47)
        self.assertEqual(n.ratio_covered, (153, 200))

        n = Numbers(
            n_files=1, n_statements=200, n_missing=47,
            n_branches=10, n_missing_branches=3, n_partial_branches=1000,
        )
        self.assertEqual(n.ratio_covered, (160, 210))

retry = True
        while not loaded and retry:
            try:
                # Load the new coverage data
                cov = coverage.coverage()
                cov.load()

                # Override precision for coverage reporting.
                coverage.results.Numbers.set_precision(1)

                if cov.data.measured_files():
                    self.coverage_data = {
                        'lines': {},
                        'missing': {},
                    }
                    totals = coverage.results.Numbers()

                    # Update the coverage display of every file mentioned in the file.
                    for filename in cov.data.measured_files():
                        filename = os.path.normcase(filename)
                        node = nodify(filename)
                        dirname, basename = os.path.split(filename)

                        # If the normalized version of the filename is the same as the
                        # filename, then the file *isn't* under the project root.
                        if filename == self.filename_normalizer(filename):
                            file_tree = self.global_file_tree
                        else:
                            file_tree = self.project_file_tree

                        try:
                            # # Make sure the file exists on the tree.

status_file = os.path.join(self.directory, self.STATUS_FILE)
            with open(status_file) as fstatus:
                status = json.load(fstatus)
        except (IOError, ValueError):
            usable = False
        else:
            usable = True
            if status['format'] != self.STATUS_FORMAT:
                usable = False
            elif status['version'] != coverage.__version__:
                usable = False

        if usable:
            self.files = {}
            for filename, fileinfo in iitems(status['files']):
                fileinfo['index']['nums'] = Numbers(*fileinfo['index']['nums'])
                self.files[filename] = fileinfo
            self.globals = status['globals']
        else:
            self.reset()

if self.coverage.data.has_arcs():
            self.no_branch = self.parser.lines_matching(
                join_regex(self.coverage.config.partial_list),
                join_regex(self.coverage.config.partial_always_list)
            )
            n_branches = self.total_branches()
            mba = self.missing_branch_arcs()
            n_missing_branches = sum(
                [len(v) for k,v in mba.items() if k not in self.missing]
            )
        else:
            n_branches = n_missing_branches = 0
            self.no_branch = set()

        self.numbers = Numbers(
            n_files=1,
            n_statements=len(self.statements),
            n_excluded=len(self.excluded),
            n_missing=len(self.missing),
            n_branches=n_branches,
            n_missing_branches=n_missing_branches,
        )

self.coverage.get_data().set_query_contexts(self.config.report_contexts)
        for fr, analysis in get_analysis_to_report(self.coverage, morfs):
            self.report_one_file(fr, analysis)

        # Prepare the formatting strings, header, and column sorting.
        max_name = max([len(fr.relative_filename()) for (fr, analysis) in self.fr_analysis] + [5])
        fmt_name = u"%%- %ds  " % max_name
        fmt_skip_covered = u"\n%s file%s skipped due to complete coverage."
        fmt_skip_empty = u"\n%s empty file%s skipped."

        header = (fmt_name % "Name") + u" Stmts   Miss"
        fmt_coverage = fmt_name + u"%6d %6d"
        if self.branches:
            header += u" Branch BrPart"
            fmt_coverage += u" %6d %6d"
        width100 = Numbers.pc_str_width()
        header += u"%*s" % (width100+4, "Cover")
        fmt_coverage += u"%%%ds%%%%" % (width100+3,)
        if self.config.show_missing:
            header += u"   Missing"
            fmt_coverage += u"   %s"
        rule = u"-" * len(header)

        column_order = dict(name=0, stmts=1, miss=2, cover=-1)
        if self.branches:
            column_order.update(dict(branch=3, brpart=4))

        # Write the header
        self.writeout(header)
        self.writeout(rule)

        # `lines` is a list of pairs, (line text, line values).  The line text

def __init__(self, coverage):
        self.coverage = coverage
        self.config = self.coverage.config
        self.branches = coverage.get_data().has_arcs()
        self.outfile = None
        self.fr_analysis = []
        self.skipped_count = 0
        self.empty_count = 0
        self.total = Numbers()
        self.fmt_err = u"%s   %s: %s"

header2 += "   Missing"
            fmt_coverage += "   %s"
        rule = "-" * len(header1) + "\n"
        header1 += "\n"
        header2 += "\n"
        fmt_coverage += "\n"

        if not outfile:
            outfile = sys.stdout

        # Write the header
        outfile.write(header1)
        outfile.write(header2)
        outfile.write(rule)

        total = Numbers()
        total_uncovered = 0

        lines = []
        for cu in self.code_units:
            try:
                analysis = self.coverage._analyze(cu)
                nums = analysis.numbers
                uncovered = nums.n_statements - nums.n_executed
                total_uncovered += uncovered
                args = (cu.name, uncovered, nums.n_executed)
                if self.branches:
                    args += (nums.n_branches, nums.n_executed_branches)
                args += (nums.pc_covered,)
                if self.show_missing:
                    args += (analysis.missing_formatted(),)
                if sortby == "covered":