def commit_string()

in testsuite/driver/perf_notes.py [0:0]

• 20 lines of code
• 16 McCabe index (conditional complexity)

    def commit_string(test, flag):
        def delta(v1, v2):
            return round((100 * (v1 - v2)/v2),2)

        # Get the average value per commit (or None if that commit contains no metrics).
        # Note: if the test environment is not set, this will combine metrics from all test environments.
        averageValuesOrNones = []
        for commit in args.commits:
            values = [float(t.stat.value) for t in metrics if t.commit == commit and t.stat.test == test]
            if values == []:
                averageValuesOrNones.append(None)
            else:
                averageValuesOrNones.append(sum(values) / len(values))

        if flag == 'metrics':
            strings = [str(v) if v != None else '-' for v in averageValuesOrNones]
        if flag == 'percentages':
            # If the baseline commit has no stats, then we can not produce any percentages.
            baseline = averageValuesOrNones[0]
            if baseline == None:
                strings = ['-' for v in averageValuesOrNones]
            else:
                baseline = float(baseline)
                strings = ['-' if val == None else str(delta(baseline,float(val))) + '%' for val in averageValuesOrNones]

        return row_fmt.format(*strings).strip()