code: def _parse_batch_lastlog(last_log):
          
          regexp = re.compile('(-?[0-9]\d*):\W+(.*)')
  
          wrong_commands = list()
          for line in last_log:
              result = regexp.match(line)
              if result is not None:
                  status_code = result.group(1)
                  command = result.group(2)
                  if int(status_code) < 0:
                      wrong_commands.append((status_code, command))
  
          return wrong_commands
docs: This static method will help reading the result of the commit, command by command.
  
          Args:
              last_log(list): A list containing, line by line, the result of committing the changes.
  
          Returns:
              A list of tuples that went wrong. The tuple will contain (*status_code*, *command*)