old_contents: # encoding: utf-8
  
  """
  .. codeauthor:: Tsuyoshi Hombashi <tsuyoshi.hombashi@gmail.com>
  """
  
  from __future__ import absolute_import, unicode_literals
  
  import subprocrunner as spr
  
  from ._common import find_bin_path
  from ._const import TcSubCommand
  from ._error import NetworkInterfaceNotFoundError
  
  
  def get_tc_base_command(tc_subcommand):
      if tc_subcommand not in TcSubCommand:
          raise ValueError("the argument must be a TcSubCommand value")
  
      return "{:s} {:s}".format(find_bin_path("tc"), tc_subcommand.value)
  
  
  def run_tc_show(subcommand, device, tc_command_output):
      from ._network import verify_network_interface
  
      verify_network_interface(device, tc_command_output)
  
      runner = spr.SubprocessRunner(
          "{:s} show dev {:s}".format(get_tc_base_command(subcommand), device)
      )
      if runner.run() != 0 and runner.stderr.find("Cannot find device") != -1:
          # reach here if the device does not exist at the system and netiface
          # not installed.
          raise NetworkInterfaceNotFoundError(target=device)
  
      return runner.stdout
  
new_contents: # encoding: utf-8
  
  """
  .. codeauthor:: Tsuyoshi Hombashi <tsuyoshi.hombashi@gmail.com>
  """
  
  from __future__ import absolute_import, unicode_literals
  
  import subprocrunner as spr
  
  from ._common import find_bin_path
  from ._const import TcSubCommand
  from ._error import NetworkInterfaceNotFoundError
  
  
  def get_tc_base_command(tc_subcommand):
      if not isinstance(tc_subcommand, TcSubCommand):
          raise ValueError("the argument must be a TcSubCommand value")
  
      return "{:s} {:s}".format(find_bin_path("tc"), tc_subcommand.value)
  
  
  def run_tc_show(subcommand, device, tc_command_output):
      from ._network import verify_network_interface
  
      verify_network_interface(device, tc_command_output)
  
      runner = spr.SubprocessRunner(
          "{:s} show dev {:s}".format(get_tc_base_command(subcommand), device)
      )
      if runner.run() != 0 and runner.stderr.find("Cannot find device") != -1:
          # reach here if the device does not exist at the system and netiface
          # not installed.
          raise NetworkInterfaceNotFoundError(target=device)
  
      return runner.stdout
  
subject: Change to avoid a DeprecationWarning