diff --git a/lesscpy/lessc/color.py b/lesscpy/lessc/color.py
index 7a914f0..4be850d 100644
--- a/lesscpy/lessc/color.py
+++ b/lesscpy/lessc/color.py
@@ -98,7 +98,7 @@ class Color():
             h, s, l = args
             if type(l) == str: l = int(l.strip('%'))
             if type(s) == str: s = int(s.strip('%'))
-            rgb = colorsys.hls_to_rgb(int(h) / 360, l / 100, s / 100)
+            rgb = colorsys.hls_to_rgb(int(h) / 360.0, l / 100.0, s / 100.0)
             color = (round(c * 255) for c in rgb)
             return self._rgbatohex(color)
         raise ValueError('Illegal color values')
@@ -114,8 +114,8 @@ class Color():
             h, s, l, a = args
             if type(l) == str: l = int(l.strip('%'))
             if type(s) == str: s = int(s.strip('%'))
-            rgb = colorsys.hls_to_rgb(int(h) / 360, l / 100, s / 100)
-            color = [round(c * 255) for c in rgb]
+            rgb = colorsys.hls_to_rgb(int(h) / 360.0, l / 100.0, s / 100.0)
+            color = [float(round(c * 255)) for c in rgb]
             color.append(round(float(a[:-1]) / 100.0, 2))
             return "rgba(%s,%s,%s,%s)" % tuple(color)
         raise ValueError('Illegal color values')
@@ -352,7 +352,7 @@ class Color():
     def _ophsl(self, color, diff, idx, op):
         if type(diff) == str: diff = int(diff.strip('%'))
         hls = list(self._hextohls(color))
-        hls[idx] = self._clamp(getattr(hls[idx], op)(diff / 100))
+        hls[idx] = self._clamp(getattr(hls[idx], op)(diff / 100.0))
         rgb = colorsys.hls_to_rgb(*hls)
         color = (round(c * 255) for c in rgb)
         return self._rgbatohex(color)
diff --git a/lesscpy/plib/expression.py b/lesscpy/plib/expression.py
index b312e45..28cf08a 100644
--- a/lesscpy/plib/expression.py
+++ b/lesscpy/plib/expression.py
@@ -7,6 +7,7 @@
     See LICENSE for details.
 .. moduleauthor:: Johann T. Mariusson <jtm@robot.is>
 """
+import sys
 from .node import Node
 from lesscpy.lessc import utility
 from lesscpy.lessc import color
@@ -116,7 +117,10 @@ class Expression(Node):
             '!=': '__ne__',
             '<>': '__ne__',
         }.get(oper)
-        ret = getattr(vala, operation)(valb)
+        if sys.version_info[0] < 3:
+            ret = self.py2op(vala, operation, valb)
+        else:
+            ret = getattr(vala, operation)(valb)
         if ret is NotImplemented:
             ret = getattr(valb, operation)(vala)
         if oper in '+-*/':
@@ -127,6 +131,25 @@ class Expression(Node):
                 pass
         return ret
     
+    def py2op(self, vala, operation, valb):
+        """ Python2 operators
+        """
+        if   operation == '__lt__':
+            ret = (vala < valb)
+        elif operation == '__gt__':
+            ret = (vala > valb)
+        elif operation == '__eq__':
+            ret = (vala == valb)
+        elif operation == '__ge__':
+            ret = (vala >= valb)
+        elif operation == '__le__':
+            ret = (vala <= valb)
+        elif operation == '__ne__':
+            ret = (vala != valb)
+        else:
+            ret = getattr(vala, operation)(valb)
+        return ret
+    
     def expression(self):
         """Return str representation of expression
         returns:
diff --git a/lesscpy/plib/mixin.py b/lesscpy/plib/mixin.py
index a5cb15d..0b37fa9 100644
--- a/lesscpy/plib/mixin.py
+++ b/lesscpy/plib/mixin.py
@@ -7,7 +7,7 @@
     See LICENSE for details.
 .. moduleauthor:: Johann T. Mariusson <jtm@robot.is>
 """
-import copy, itertools
+import sys, copy, itertools
 from .node import Node
 from .block import Block
 from .expression import Expression
@@ -53,13 +53,13 @@ class Mixin(Node):
             SyntaxError
         """
         arguments = zip(args, [' '] * len(args)) if args and args[0] else None
+        zl = itertools.zip_longest if sys.version_info[0] == 3 else itertools.izip_longest
         if self.args:
             parsed = [v if hasattr(v, 'parse') else v
                       for v in copy.copy(self.args)]
             args = args if type(args) is list else [args]
             vars = [self._parse_arg(var, arg, scope) 
-                    for arg, var in itertools.izip_longest([a for a in args], 
-                                                          parsed)]
+                    for arg, var in zl([a for a in args], parsed)]
             for var in vars: 
                 if var: var.parse(scope)
             if not arguments:
diff --git a/lesscpy/test/testcolor.py b/lesscpy/test/testcolor.py
index 7d9f8a2..7b10e60 100644
--- a/lesscpy/test/testcolor.py
+++ b/lesscpy/test/testcolor.py
@@ -67,11 +67,11 @@ class TestLessColor(unittest.TestCase):
     def test_hsla(self):
         test = self.color.hsla
         for h, s, l, a, v in [
-            (31, '1%', '4%', '0%', 'rgba(10,10,10,0.0)'),
-            (31, '30%', '4%', '1%', 'rgba(13,10,7,0.01)'),
-            (31, '60%', '4%', '20%', 'rgba(16,10,4,0.2)'),
-            (31, '90%', '4%', '60%', 'rgba(19,11,1,0.6)'),
-            (31, '100%', '4%', '100%', 'rgba(20,11,0,1.0)'),
+            (31, '1%', '4%', '0%', 'rgba(10.0,10.0,10.0,0.0)'),
+            (31, '30%', '4%', '1%', 'rgba(13.0,10.0,7.0,0.01)'),
+            (31, '60%', '4%', '20%', 'rgba(16.0,10.0,4.0,0.2)'),
+            (31, '90%', '4%', '60%', 'rgba(19.0,11.0,1.0,0.6)'),
+            (31, '100%', '4%', '100%', 'rgba(20.0,11.0,0.0,1.0)'),
         ]:
             self.assertEqual(test(h, s, l, a), v)
         
diff --git a/lesscpy/test/testexpression.py b/lesscpy/test/testexpression.py
index 84309e3..af5d48b 100644
--- a/lesscpy/test/testexpression.py
+++ b/lesscpy/test/testexpression.py
@@ -43,9 +43,15 @@ class TestExpression(unittest.TestCase):
             e = Expression(test[:3])
             self.assertEqual(test[3], e.parse(None), str(test))
             
-    def testeq(self):
+    def testop(self):
         for test in [
             ['0', '=', '0', True],
+            ['1', '>', '2', False],
+            ['1', '<', '2', True],
+            ['1', '>=', '2', False],
+            ['1', '<=', '2', True],
+            ['1', '!=', '2', True],
+            ['1', '<>', '2', True],
         ]:
             e = Expression(test[:3])
             self.assertEqual(test[3], e.parse(None), test)