diff --git a/pygcode/block.py b/pygcode/block.py
index 5a9fdf2..bb8b716 100644
--- a/pygcode/block.py
+++ b/pygcode/block.py
@@ -76,5 +76,10 @@ class Block(object):
                 key=k
             ))
 
+    def __bool__(self):
+        return bool(self.words)
+
+    __nonzero__ = __bool__  # python < 3 compatability
+
     def __str__(self):
         return ' '.join(str(x) for x in (self.gcodes + self.modal_params))
diff --git a/pygcode/transform.py b/pygcode/transform.py
index b3343a6..18250a2 100644
--- a/pygcode/transform.py
+++ b/pygcode/transform.py
@@ -244,25 +244,6 @@ def linearize_arc(arc_gcode, start_pos, plane=None, method_class=None,
     #   - helical_start distance along plane.normal of arc start
     #   - helical_disp  distance along plane.normal of arc end
 
-    #print((
-    #    "linearize_arc params\n"
-    #    "   - arc_p_start   {arc_p_start}\n"
-    #    "   - arc_p_end     {arc_p_end}\n"
-    #    "   - arc_p_center  {arc_p_center}\n"
-    #    "   - arc_radius    {arc_radius}\n"
-    #    "   - arc_angle     {arc_angle:.4f} ({arc_angle_deg:.3f} deg)\n"
-    #    "   - helical_start {helical_start}\n"
-    #    "   - helical_end   {helical_end}\n"
-    #).format(
-    #    arc_p_start=arc_p_start,
-    #    arc_p_end=arc_p_end,
-    #    arc_p_center=arc_p_center,
-    #    arc_radius=arc_radius,
-    #    arc_angle=arc_angle, arc_angle_deg=arc_angle * (180/pi),
-    #    helical_start=helical_start,
-    #    helical_end=helical_end,
-    #))
-
     method_class_params = {
         'max_error': max_error,
         'plane_normal': plane.normal,
diff --git a/scripts/pygcode-normalize.py b/scripts/pygcode-normalize.py
index 8d3e534..2e8bb56 100755
--- a/scripts/pygcode-normalize.py
+++ b/scripts/pygcode-normalize.py
@@ -157,7 +157,3 @@ for line_str in args.infile[0].readlines():
     else:
         print(str(line))
         machine.process_block(line.block)
-
-
-
-    #print("%r, %s" % (sorted(line.block.gcodes), line.block.modal_params))