How to use the gcovr.utils.get_global_stats function in gcovr

def fail_under(covdata, threshold_line, threshold_branch):
    (lines_total, lines_covered, percent,
        branches_total, branches_covered,
        percent_branches) = get_global_stats(covdata)

    if branches_total == 0:
        percent_branches = 100.0

    if percent < threshold_line and percent_branches < threshold_branch:
        sys.exit(6)
    if percent < threshold_line:
        sys.exit(2)
    if percent_branches < threshold_branch:
        sys.exit(4)

def print_summary(covdata):
    '''Print a small report to the standard output.
    Output the percentage, covered and total lines and branches.
    '''

    (lines_total, lines_covered, percent,
     branches_total, branches_covered,
     percent_branches) = get_global_stats(covdata)

    lines_out = "lines: %0.1f%% (%s out of %s)\n" % (
        percent, lines_covered, lines_total
    )
    branches_out = "branches: %0.1f%% (%s out of %s)\n" % (
        percent_branches, branches_covered, branches_total
    )

    sys.stdout.write(lines_out)
    sys.stdout.write(branches_out)