https://github.com/sunpinyin/sunpinyin/issues/111

--- /wrapper/ibus/setup/main.py
+++ /wrapper/ibus/setup/main.py
@@ -63,7 +63,7 @@
 class Logger:
     @staticmethod
     def pr(message):
-        print >> sys.stderr, message
+        print(message, file=sys.stderr)
 
 
 class Option(object):
@@ -73,10 +73,10 @@
     """
     config = ibus.Bus().get_config()
     __wrappers = {
-        type(True): glib.Variant.new_boolean,
-        type(1): glib.Variant.new_int32,
-        type('str'): glib.Variant.new_string,
-        type([]): glib.Variant.new_strv,
+        bool: glib.Variant.new_boolean,
+        int: glib.Variant.new_int32,
+        str: glib.Variant.new_string,
+        list: glib.Variant.new_strv,
     }
 
     def __init__(self, name, default):
@@ -258,7 +258,7 @@
     def read_config(self):
         if not self.saved_pairs:
             self.saved_pairs = self.read()
-        keys = set([pair.split(':')[0] for pair in self.saved_pairs])
+        keys = {pair.split(':')[0] for pair in self.saved_pairs}
         for opt in self.options:
             opt.is_enabled = (opt.key() in keys)
             # throw away unknown pair
@@ -445,28 +445,28 @@
     # TODO: the UI should looks like a virtual keyboard,
     #       user are allowed to choose the mappings to all punctuation keys.
     def __init__(self):
-        mappings = [MappingInfo('togglebutton1', [('`',None), ('~',u'～')]),
+        mappings = [MappingInfo('togglebutton1', [('`', None), ('~', '～')]),
                     MappingInfo('togglebutton2', []),
-                    MappingInfo('togglebutton3', [('2',None), ('@',u'＠')]),
-                    MappingInfo('togglebutton4', [('3',None), ('#',u'＃')]),
-                    MappingInfo('togglebutton5', [('4',None), ('$',u'¥' )]),
-                    MappingInfo('togglebutton6', [('5',None), ('%',u'％')]),
-                    MappingInfo('togglebutton7', [('6',None), ('^',u'…')]),
-                    MappingInfo('togglebutton8', [('7',None), ('&',u'＆')]),
-                    MappingInfo('togglebutton9', [('8',None), ('*',u'＊')]),
-                    MappingInfo('togglebutton10', [('9',None), ('*',u'（')]),
-                    MappingInfo('togglebutton11', [('0',None), ('*',u'）')]),
-                    MappingInfo('togglebutton12', [('-',u'－'), ('_',u'——')]),
-                    MappingInfo('togglebutton13', [('=',u'＝'), ('+',u'＋')]),
-                    MappingInfo('togglebutton14', [('\\',None), ('|',u'‖')]),
-                    MappingInfo('togglebutton27', [('[',u'〔'), ('{',u'｛')]),
-                    MappingInfo('togglebutton28', [(']',u'〕'), ('}',u'｝')]),
+                    MappingInfo('togglebutton3', [('2', None), ('@', '＠')]),
+                    MappingInfo('togglebutton4', [('3', None), ('#', '＃')]),
+                    MappingInfo('togglebutton5', [('4', None), ('$', '¥' )]),
+                    MappingInfo('togglebutton6', [('5', None), ('%', '％')]),
+                    MappingInfo('togglebutton7', [('6', None), ('^', '…')]),
+                    MappingInfo('togglebutton8', [('7', None), ('&', '＆')]),
+                    MappingInfo('togglebutton9', [('8', None), ('*', '＊')]),
+                    MappingInfo('togglebutton10', [('9', None), ('*', '（')]),
+                    MappingInfo('togglebutton11', [('0', None), ('*', '）')]),
+                    MappingInfo('togglebutton12', [('-', '－'), ('_', '——')]),
+                    MappingInfo('togglebutton13', [('=', '＝'), ('+', '＋')]),
+                    MappingInfo('togglebutton14', [('\\', None), ('|', '‖')]),
+                    MappingInfo('togglebutton27', [('[', '〔'), ('{', '｛')]),
+                    MappingInfo('togglebutton28', [(']', '〕'), ('}', '｝')]),
                     MappingInfo('togglebutton39', []),
                     MappingInfo('togglebutton40', []),
-                    MappingInfo('togglebutton50', [(',',None), ('<',u'〈')]),
-                    MappingInfo('togglebutton51', [('.',u'·'), ('>',u'〉')]),
-                    MappingInfo('togglebutton52', [('/',u'／'), ('?',None)])]
-                    #'\'',(u'‘',u'’'),
+                    MappingInfo('togglebutton50', [(',', None), ('<', '〈')]),
+                    MappingInfo('togglebutton51', [('.', '·'), ('>', '〉')]),
+                    MappingInfo('togglebutton52', [('/', '／'), ('?', None)])]
+                    #'\'', ('‘', '’'),
         MultiCheckDialog.__init__(self, ui_name="punctmapping",
                                   config_name="General/PunctMapping/Mappings",
                                   mappings=mappings,