def show_statistics(self, statistics: Statistics) -> None:  # noqa: WPS210
        """Called when ``--statistic`` option is passed."""
        all_errors = 0
        for error_code in statistics.error_codes():
            stats_for_error_code = statistics.statistics_for(error_code)
            statistic = next(stats_for_error_code)

            count = statistic.count
            count += sum(stat.count for stat in stats_for_error_code)
            all_errors += count
            error_by_file = _count_per_filename(statistics, error_code)

            self._write(
                '{newline}{error_code}: {message}'.format(
                    newline=self.newline,
                    error_code=_bold(error_code),
                    message=statistic.message,
                ), )
            for filename in error_by_file:
                self._write(
                    '  {error_count:<5} {filename}'.format(
                        error_count=error_by_file[filename],
                        filename=filename,
                    ), )
            self._write(_underline('Total: {0}'.format(count)))

        self._write(self.newline)
        self._write(_underline(_bold('All errors: {0}'.format(all_errors))))
def _count_per_filename(
    statistics: Statistics,
    error_code: str,
) -> DefaultDict[str, int]:
    filenames: DefaultDict[str, int] = defaultdict(int)
    stats_for_error_code = statistics.statistics_for(error_code)

    for stat in stats_for_error_code:
        filenames[stat.filename] += stat.count

    return filenames
    def show_statistics(self, statistics: Statistics) -> None:  # noqa: WPS210
        """Called when ``--statistic`` option is passed."""
        all_errors = 0
        for error_code in statistics.error_codes():
            stats_for_error_code = statistics.statistics_for(error_code)
            statistic = next(stats_for_error_code)

            count = statistic.count
            count += sum(stat.count for stat in stats_for_error_code)
            all_errors += count
            error_by_file = _count_per_filename(statistics, error_code)

            self._print_violation_per_file(
                statistic,
                error_code,
                count,
                error_by_file,
            )

        self._write(self.newline)
        self._write(_underline(_bold('All errors: {0}'.format(all_errors))))