old_contents: """ Define formatters. """
  import datetime as dt
  from html import escape
  
  
  def default_formatter(handler, item, value):
      """ Default formatter. """
      if hasattr(value, '__unicode__'):
          value = value.__unicode__()
      else:
          value = str(value)
      return escape(value)
  
  
  def bool_formatter(handler, item, value):
      """ Boolean formatter. """
      glyph = 'ok' if value else 'minus'
      return '<span class="glyphicon glyphicon-%s"></span>' % glyph
  
  
  def list_formatter(handler, item, value):
      """ Format list. """
      return u', '.join(str(v) for v in value)
  
  
  def empty_formatter(handler, item, value):
      """ Format None. """
      return ''
  
  
  def datetime_formatter(handler, item, value):
      """ Format Datetime. """
      return value.strftime('<span style="white-space: nowrap">%Y-%m-%d %H:%M</span>')
  
  
  def date_formatter(handler, item, value):
      """ Format Date. """
      return value.strftime('%Y-%m-%d')
  
  
  FORMATTERS = {
      type(None): empty_formatter,
      bool: bool_formatter,
      list: list_formatter,
      dt.datetime: datetime_formatter,
  }
  
  
  def format_value(handler, item, column):
      """ Format value. """
      value = getattr(item, column, None)
      formatter = FORMATTERS.get(type(value), default_formatter)
      return formatter(handler, item, value)
  
new_contents: """Define formatters."""
  
  import datetime as dt
  from html import escape
  
  
  def default_formatter(handler, item, value):
      """Default formatter. Convert value to string."""
      if hasattr(value, '__unicode__'):
          value = value.__unicode__()
  
      return escape(str(value))
  
  
  def bool_formatter(handler, item, value):
      """Boolean formatter."""
      glyph = 'ok' if value else 'minus'
      return '<span class="glyphicon glyphicon-%s"></span>' % glyph
  
  
  def list_formatter(handler, item, value):
      """Format list."""
      return u', '.join(str(v) for v in value)
  
  
  def empty_formatter(handler, item, value):
      """Format None."""
      return ''
  
  
  def datetime_formatter(handler, item, value):
      """Format Datetime."""
      return value.strftime('<span style="white-space: nowrap">%Y-%m-%d %H:%M</span>')
  
  
  def date_formatter(handler, item, value):
      """Format Date."""
      return value.strftime('%Y-%m-%d')
  
  
  FORMATTERS = {
      type(None): empty_formatter,
      bool: bool_formatter,
      list: list_formatter,
      dt.datetime: datetime_formatter,
  }
  
  
  def format_value(handler, item, column):
      """Format value."""
      value = getattr(item, column, None)
      formatter = FORMATTERS.get(type(value), default_formatter)
      return formatter(handler, item, value)
  
subject: Fix default formatter