Make Py3 code work on Py2 as well.

Everything works except the lxml treewalkers. That really needs rewritten.

Author: gsnedders

html5lib/__init__.py

@@ -1,3 +1,5 @@
+from __future__ import absolute_import, division, unicode_literals
+
 """ 
 HTML parsing library based on the WHATWG "HTML5"
 specification. The parser is designed to be compatible with existing

html5lib/constants.py

@@ -1,3 +1,5 @@
+from __future__ import absolute_import, division, unicode_literals
+
 import string, gettext
 _ = gettext.gettext
 

html5lib/filters/_base.py

@@ -1,3 +1,5 @@
+from __future__ import absolute_import, division, unicode_literals
+
 
 class Filter(object):
     def __init__(self, source):

html5lib/filters/inject_meta_charset.py

@@ -1,3 +1,5 @@
+from __future__ import absolute_import, division, unicode_literals
+
 from . import _base
 
 class Filter(_base.Filter):

html5lib/filters/lint.py

@@ -1,3 +1,5 @@
+from __future__ import absolute_import, division, unicode_literals
+
 from gettext import gettext
 _ = gettext
 

html5lib/filters/optionaltags.py

@@ -1,3 +1,5 @@
+from __future__ import absolute_import, division, unicode_literals
+
 from . import _base
 
 class Filter(_base.Filter):

html5lib/filters/sanitizer.py

@@ -1,3 +1,5 @@
+from __future__ import absolute_import, division, unicode_literals
+
 from . import _base
 from html5lib.sanitizer import HTMLSanitizerMixin
 

html5lib/filters/whitespace.py

@@ -1,3 +1,5 @@
+from __future__ import absolute_import, division, unicode_literals
+
 import re
 
 from . import _base

html5lib/html5parser.py

@@ -1,3 +1,6 @@
+from __future__ import absolute_import, division, unicode_literals
+from six import with_metaclass
+
 import sys
 import types
 
@@ -444,7 +447,7 @@ def getMetaclass(use_metaclass, metaclass_func):
         else:
             return type
 
-    class Phase(object, metaclass=getMetaclass(debug, log)):
+    class Phase(with_metaclass(getMetaclass(debug, log))):
         """Base class for helper object that implements each phase of processing
         """
 
@@ -2686,7 +2689,7 @@ def impliedTagToken(name, type="EndTag", attributes = None,
                     selfClosing = False):
     if attributes is None:
         attributes = {}
-    return {"type":tokenTypes[type], "name":str(name), "data":attributes,
+    return {"type":tokenTypes[type], "name":name, "data":attributes,
             "selfClosing":selfClosing}
 
 class ParseError(Exception):

html5lib/ihatexml.py

@@ -1,3 +1,5 @@
+from __future__ import absolute_import, division, unicode_literals
+
 import re
 import warnings