old_contents: # encoding: utf-8
  
  '''
  .. codeauthor:: Tsuyoshi Hombashi <tsuyoshi.hombashi@gmail.com>
  '''
  
  from __future__ import print_function, unicode_literals
  
  import datetime
  import io
  import os
  import sys
  
  import typepy
  
  from ._const import Tc
  from ._logger import logger
  
  
  def write_tc_script(tcconfig_command, command_history, filename_suffix=None):
      filename_item_list = [tcconfig_command]
      if typepy.is_not_null_string(filename_suffix):
          filename_item_list.append(filename_suffix)
  
      script_line_list = [
          "#!/bin/sh",
          "",
      ]
  
      org_tcconfig_cmd = _get_original_tcconfig_command(tcconfig_command)
  
      if tcconfig_command != Tc.Command.TCSHOW:
          script_line_list.extend([
              "# command sequence in this script attempt to simulate the following command:",
              "# '{:s}'.".format(org_tcconfig_cmd),
          ])
  
      script_line_list.extend([
          "#",
          "# note: the command sequence execution may result different, compared to '{}.'".format(
              org_tcconfig_cmd),
          "#",
          "# created by {:s} on {:s}.".format(
              tcconfig_command,
              datetime.datetime.now().strftime("%Y-%m-%dT%H:%M:%S%z")),
          "",
          command_history,
      ])
  
      filename = "_".join(filename_item_list) + ".sh"
      with io.open(filename, "w", encoding="utf8") as fp:
          fp.write("\n".join(script_line_list) + "\n")
  
      os.chmod(filename, 0o755)
      logger.info("written a tc script to '{:s}'".format(filename))
  
  
  def _get_original_tcconfig_command(tcconfig_command):
      return " ".join([tcconfig_command] + [
          command_item for command_item in sys.argv[1:]
          if command_item != "--tc-script"
      ])
  
new_contents: # encoding: utf-8
  
  '''
  .. codeauthor:: Tsuyoshi Hombashi <tsuyoshi.hombashi@gmail.com>
  '''
  
  from __future__ import absolute_import, unicode_literals
  
  import datetime
  import io
  import os
  import sys
  
  import typepy
  
  from ._const import Tc
  from ._logger import logger
  
  
  def write_tc_script(tcconfig_command, command_history, filename_suffix=None):
      filename_item_list = [tcconfig_command]
      if typepy.is_not_null_string(filename_suffix):
          filename_item_list.append(filename_suffix)
  
      script_line_list = [
          "#!/bin/sh",
          "",
      ]
  
      org_tcconfig_cmd = _get_original_tcconfig_command(tcconfig_command)
  
      if tcconfig_command != Tc.Command.TCSHOW:
          script_line_list.extend([
              "# command sequence in this script attempt to simulate the following command:",
              "# '{:s}'.".format(org_tcconfig_cmd),
          ])
  
      script_line_list.extend([
          "#",
          "# note: the command sequence execution may result different, compared to '{}.'".format(
              org_tcconfig_cmd),
          "#",
          "# created by {:s} on {:s}.".format(
              tcconfig_command,
              datetime.datetime.now().strftime("%Y-%m-%dT%H:%M:%S%z")),
          "",
          command_history,
      ])
  
      filename = "_".join(filename_item_list) + ".sh"
      with io.open(filename, "w", encoding="utf8") as fp:
          fp.write("\n".join(script_line_list) + "\n")
  
      os.chmod(filename, 0o755)
      logger.info("written a tc script to '{:s}'".format(filename))
  
  
  def _get_original_tcconfig_command(tcconfig_command):
      return " ".join([tcconfig_command] + [
          command_item for command_item in sys.argv[1:]
          if command_item != "--tc-script"
      ])
  
subject: Modify __future__ import