def print_bars(self, label_column_name, value_column_name, domain=None, width=120, output=sys.stdout): """ Print a text-based bar chart of the columns names `label_column_name` and `value_column_name`. :param label_column_name: The column containing the label values. :param value_column_name: The column containing the bar values. :param domain: A 2-tuple containing the minimum and maximum values for the chart's x-axis. The domain must be large enough to contain all values in the column. :param width: The width, in characters, to use for the bar chart. Defaults to `120`. :param output: A file-like object to print to. Defaults to :code:`sys.stdout`. """ print_bars(self, label_column_name, value_column_name, domain, width, output)