code: def FormatException(self, e, output):
      
      d = e.GetDictToFormat()
      for k in ('file_name', 'feedname', 'column_name'):
        if k in d.keys():
          d[k] = '<code>%s</code>' % d[k]
      if 'url' in d.keys():
        d['url'] = '<a href="%(url)s">%(url)s</a>' % d
  
      problem_text = e.FormatProblem(d).replace('\n', '<br>')
      problem_class = 'problem'
      if e.IsNotice():
        problem_class += ' notice'
      output.append('<li>')
      output.append('<div class="%s">%s</div>' %
                    (problem_class, transitfeed.EncodeUnicode(problem_text)))
      try:
        if hasattr(e, 'row_num'):
          line_str = 'line %d of ' % e.row_num
        else:
          line_str = ''
        output.append('in %s<code>%s</code><br>\n' %
                      (line_str, transitfeed.EncodeUnicode(e.file_name)))
        row = e.row
        headers = e.headers
        column_name = e.column_name
        table_header = ''  # HTML
        table_data = ''  # HTML
        for header, value in zip(headers, row):
          attributes = ''
          if header == column_name:
            attributes = ' class="problem"'
          table_header += '<th%s>%s</th>' % (attributes, header)
          table_data += '<td%s>%s</td>' % (attributes, value)
        # Make sure output is encoded into UTF-8
        output.append('<table class="dump"><tr>%s</tr>\n' %
                      transitfeed.EncodeUnicode(table_header))
        output.append('<tr>%s</tr></table>\n' %
                      transitfeed.EncodeUnicode(table_data))
      except AttributeError as e:
        pass  # Hope this was getting an attribute from e ;-)
      output.append('<br></li>\n')
docs: Append HTML version of e to list output.