diff --git a/nhentai/cmdline.py b/nhentai/cmdline.py
index 10f5ace..c20802c 100644
--- a/nhentai/cmdline.py
+++ b/nhentai/cmdline.py
@@ -1,5 +1,6 @@
 # coding: utf-8
-from __future__ import print_function
+from __future__ import print_function, unicode_literals
+import sys
 from optparse import OptionParser
 try:
     from itertools import ifilter as filter
@@ -25,7 +26,7 @@ def cmd_parser():
     parser = OptionParser()
     parser.add_option('--download', dest='is_download', action='store_true', help='download doujinshi or not')
     parser.add_option('--show-info', dest='is_show', action='store_true', help='just show the doujinshi information.')
-    parser.add_option('--id', type='str', dest='id', action='store', help='doujinshi ids set, e.g. 1,2,3')
+    parser.add_option('--id', type='string', dest='id', action='store', help='doujinshi ids set, e.g. 1,2,3')
     parser.add_option('--search', type='string', dest='keyword', action='store', help='search doujinshi by keyword')
     parser.add_option('--page', type='int', dest='page', action='store', default=1,
                       help='page number of search result')
@@ -38,7 +39,13 @@ def cmd_parser():
                       help='timeout of download doujinshi')
     parser.add_option('--proxy', type='string', dest='proxy', action='store', default='',
                       help='use proxy, example: http://127.0.0.1:1080')
-    args, _ = parser.parse_args()
+
+    try:
+        sys.argv = list(map(lambda x: unicode(x.decode('utf-8')), sys.argv))
+    except (NameError, TypeError):
+        pass
+
+    args, _ = parser.parse_args(sys.argv[1:])
 
     if args.tags:
         logger.warning('`--tags` is under construction')
diff --git a/nhentai/command.py b/nhentai/command.py
index a0cac08..6fbf786 100644
--- a/nhentai/command.py
+++ b/nhentai/command.py
@@ -1,5 +1,6 @@
 #!/usr/bin/env python2.7
 # coding: utf-8
+from __future__ import unicode_literals, print_function
 import signal
 
 from nhentai.cmdline import cmd_parser, banner
diff --git a/nhentai/constant.py b/nhentai/constant.py
index 2959cbf..d9d4878 100644
--- a/nhentai/constant.py
+++ b/nhentai/constant.py
@@ -1,3 +1,5 @@
+# coding: utf-8
+from __future__ import unicode_literals, print_function
 import os
 from nhentai.utils import urlparse
 
diff --git a/nhentai/doujinshi.py b/nhentai/doujinshi.py
index e664052..8d0b9a8 100644
--- a/nhentai/doujinshi.py
+++ b/nhentai/doujinshi.py
@@ -1,7 +1,7 @@
 # coding: utf-8
-from __future__ import print_function
+from __future__ import print_function, unicode_literals
 from tabulate import tabulate
-# from builtins import range
+from future.builtins import range
 
 from nhentai.constant import DETAIL_URL, IMAGE_URL
 from nhentai.logger import logger
diff --git a/nhentai/downloader.py b/nhentai/downloader.py
index 5eeab90..c46c5e6 100644
--- a/nhentai/downloader.py
+++ b/nhentai/downloader.py
@@ -1,5 +1,6 @@
-# coding: utf-8
-from builtins import str as text
+# coding: utf-
+from __future__ import unicode_literals, print_function
+from future.builtins import str as text
 import os
 import requests
 import threadpool
diff --git a/nhentai/logger.py b/nhentai/logger.py
index 88273ab..dbf8034 100644
--- a/nhentai/logger.py
+++ b/nhentai/logger.py
@@ -1,6 +1,7 @@
 #
 # Copyright (C) 2010-2012 Vinay Sajip. All rights reserved. Licensed under the new BSD license.
 #
+from __future__ import print_function, unicode_literals
 import logging
 import os
 import re
diff --git a/nhentai/parser.py b/nhentai/parser.py
index 02f9766..127d6fa 100644
--- a/nhentai/parser.py
+++ b/nhentai/parser.py
@@ -1,5 +1,5 @@
 # coding: utf-8
-from __future__ import print_function
+from __future__ import unicode_literals, print_function
 
 from bs4 import BeautifulSoup
 import re
@@ -99,7 +99,7 @@ def search_parser(keyword, page):
 def print_doujinshi(doujinshi_list):
     if not doujinshi_list:
         return
-    doujinshi_list = [i.values() for i in doujinshi_list]
+    doujinshi_list = [(i['id'], i['title']) for i in doujinshi_list]
     headers = ['id', 'doujinshi']
     logger.info('Search Result\n' +
                 tabulate(tabular_data=doujinshi_list, headers=headers, tablefmt='rst'))
diff --git a/nhentai/utils.py b/nhentai/utils.py
index 93bdf8c..6377b14 100644
--- a/nhentai/utils.py
+++ b/nhentai/utils.py
@@ -1,4 +1,6 @@
 # coding: utf-8
+from __future__ import unicode_literals, print_function
+
 
 class _Singleton(type):
     """ A metaclass that creates a Singleton base class when called. """
@@ -10,7 +12,7 @@ class _Singleton(type):
         return cls._instances[cls]
 
 
-class Singleton(_Singleton('SingletonMeta', (object,), {})):
+class Singleton(_Singleton(str('SingletonMeta'), (object,), {})):
     pass