Fix for issue 31. hsl(a) processing on floats.

lesscpy/lessc/color.py

@@ -157,11 +157,7 @@ class Color():
             return self.hsla(*args)
         elif len(args) == 3:
             h, s, l = args
-            if isinstance(l, str):
-                l = int(l.strip('%'))
-            if isinstance(s, str):
-                s = int(s.strip('%'))
-            rgb = colorsys.hls_to_rgb(int(h) / 360.0, l / 100.0, s / 100.0)
+            rgb = colorsys.hls_to_rgb(int(h) / 360.0, utility.pc_or_float(l), utility.pc_or_float(s))
             color = (utility.convergent_round(c * 255) for c in rgb)
             return self._rgbatohex(color)
         raise ValueError('Illegal color values')
@@ -175,13 +171,9 @@ class Color():
         """
         if len(args) == 4:
             h, s, l, a = args
-            if isinstance(l, str):
-                l = int(l.strip('%'))
-            if isinstance(s, str):
-                s = int(s.strip('%'))
-            rgb = colorsys.hls_to_rgb(int(h) / 360.0, l / 100.0, s / 100.0)
+            rgb = colorsys.hls_to_rgb(int(h) / 360.0, utility.pc_or_float(l), utility.pc_or_float(s))
             color = [float(utility.convergent_round(c * 255)) for c in rgb]
-            color.append(utility.convergent_round(float(a[:-1]) / 100.0, 2))
+            color.append(utility.pc_or_float(a))
             return "rgba(%s,%s,%s,%s)" % tuple(color)
         raise ValueError('Illegal color values')
 

lesscpy/lessc/utility.py

@@ -278,6 +278,16 @@ def convergent_round(value, ndigits=0):
                 return math.ceil(nearest_even)
     return round(value, ndigits)
 
+def pc_or_float(s):
+    """ Utility function to process strings that contain either percentiles or floats
+    args:
+        str: s
+    returns:
+       float
+    """
+    if isinstance(s, str) and '%' in s:
+        return float(s.strip('%')) / 100.0
+    return float(s)
 
 def permutations_with_replacement(iterable, r=None):
     """Return successive r length permutations of elements in the iterable.

test/css/issues/issue31.css

@@ -0,0 +1,4 @@
+a.color {
+	color: rgba(0.0,0.0,0.0,0.5);
+	color: rgba(10.0,10.0,10.0,0.0);
+}

test/less/issues/issue31.less

@@ -0,0 +1,4 @@
+a.color {
+	color: hsla(0, 0%, 0%, 0.5);
+	color: hsla(31, 1%, 4%, 0%);
+}