old_contents: # encoding: utf-8
  
  """
  .. codeauthor:: Tsuyoshi Hombashi <gogogo.vm@gmail.com>
  """
  
  from __future__ import absolute_import
  
  import dataproperty
  
  from ._text_writer import TextTableWriter
  
  
  class CsvTableWriter(TextTableWriter):
      """
      Concrete class of a table writer for CSV format.
  
      :Examples:
  
          :ref:`example-csv-table-writer`
      """
  
      @property
      def support_split_write(self):
          return True
  
      def __init__(self):
          super(CsvTableWriter, self).__init__()
  
          self.indent_string = u""
          self.column_delimiter = u","
          self.is_padding = False
          self.is_write_header_separator_row = False
  
      def _verify_header(self):
          pass
  
      def _write_header(self):
          if dataproperty.is_empty_list_or_tuple(self.header_list):
              return
  
          super(CsvTableWriter, self)._write_header()
  
      def _get_opening_row_item_list(self):
          return []
  
      def _get_value_row_separator_item_list(self):
          return []
  
      def _get_closing_row_item_list(self):
          return []
  
new_contents: # encoding: utf-8
  
  """
  .. codeauthor:: Tsuyoshi Hombashi <gogogo.vm@gmail.com>
  """
  
  from __future__ import absolute_import
  
  import dataproperty
  
  from ._text_writer import TextTableWriter
  
  
  class CsvTableWriter(TextTableWriter):
      """
      Concrete class of a table writer for CSV format.
  
      :Examples:
  
          :ref:`example-csv-table-writer`
      """
  
      @property
      def support_split_write(self):
          return True
  
      def __init__(self):
          super(CsvTableWriter, self).__init__()
  
          self.indent_string = u""
          self.column_delimiter = u","
          self.is_padding = False
          self.is_write_header_separator_row = False
  
      def _write_header(self):
          if dataproperty.is_empty_list_or_tuple(self.header_list):
              return
  
          super(CsvTableWriter, self)._write_header()
  
      def _get_opening_row_item_list(self):
          return []
  
      def _get_value_row_separator_item_list(self):
          return []
  
      def _get_closing_row_item_list(self):
          return []
  
subject: Delete redundant lines of code