1 files changed, 26 insertions, 0 deletions
diff --git a/urwid/compat.py b/urwid/compat.py
index 686d703..de0bf7a 100644
--- a/urwid/compat.py
+++ b/urwid/compat.py
@@ -20,6 +20,8 @@
 #
 # Urwid web site: http://excess.org/urwid/
 
+from __future__ import division, print_function
+
 import sys
 
 try: # python 2.4 and 2.5 compat
@@ -39,10 +41,34 @@ if PYTHON3:
     chr2 = lambda x: bytes([x])
     B = lambda x: x.encode('iso8859-1')
     bytes3 = bytes
+    text_type = str
+    xrange = range
+    text_types = (str,)
 else:
     ord2 = ord
     chr2 = chr
     B = lambda x: x
     bytes3 = lambda x: bytes().join([chr(c) for c in x])
+    text_type = unicode
+    xrange = xrange
+    text_types = (str, unicode)
+
+
+def with_metaclass(meta, *bases):
+    """
+    Create a base class with a metaclass.
+    Taken from "six" library (https://pythonhosted.org/six/).
+    """
+    # This requires a bit of explanation: the basic idea is to make a dummy
+    # metaclass for one level of class instantiation that replaces itself with
+    # the actual metaclass.
+    class metaclass(type):
+
+        def __new__(cls, name, this_bases, d):
+            return meta(name, bases, d)
 
+        @classmethod
+        def __prepare__(cls, name, this_bases):
+            return meta.__prepare__(name, bases)
+    return type.__new__(metaclass, 'temporary_class', (), {})