code: def _format_csv(content, delimiter):
      
      reader = csv_reader(StringIO(content), delimiter=builtin_str(delimiter))
      rows = [row for row in reader]
      max_widths = [max(map(len, column)) for column in zip(*rows)]
  
      lines = [
          " ".join(
              "{entry:{width}}".format(entry=entry, width=width + 2)
              for entry, width in zip(row, max_widths)
          )
          for row in rows
      ]
  
      return "\n".join(lines)
docs: Format delimited text to have same column width.
  
      Args:
          content (str): The content of a metric.
          delimiter (str): Value separator
  
      Returns:
          str: Formatted content.
  
      Example:
  
          >>> content = (
              "value_mse,deviation_mse,data_set\n"
              "0.421601,0.173461,train\n"
              "0.67528,0.289545,testing\n"
              "0.671502,0.297848,validation\n"
          )
          >>> _format_csv(content, ",")
  
          "value_mse  deviation_mse   data_set\n"
          "0.421601   0.173461        train\n"
          "0.67528    0.289545        testing\n"
          "0.671502   0.297848        validation\n"