code: def test_print_bars(self):
      table = Table(self.rows, self.column_names, self.column_types)
  
      output = StringIO()
      table.print_bars("three", "one", output=output)
      output.getvalue().split("\n")
  
file_path: agate/tests/test_table/test_print_bars.py
imports: from io import StringIO
  from babel.numbers import format_decimal
  from agate import Table
  from agate.data_types import Number, Text
  from agate.exceptions import DataTypeError
  from agate.testcase import AgateTestCase
label_desc: Use image node_id 2 for calling the TestPrintBars obj's underlying member method code with example usage: obj.test_print_bars() without return types