diff --git a/zenmap/radialnet/gui/LegendWindow.py b/zenmap/radialnet/gui/LegendWindow.py
index 096348e1e..1aa691db2 100644
--- a/zenmap/radialnet/gui/LegendWindow.py
+++ b/zenmap/radialnet/gui/LegendWindow.py
@@ -222,7 +222,6 @@ class LegendWindow(gtk.Window):
         """
         """
         self.graphic_context = widget.window.cairo_create()
-        w, h = widget.window.get_size()
         x, y = 45, 20
         draw_heading(self.graphic_context, x, y, _("Hosts"))
 
diff --git a/zenmap/radialnet/gui/RadialNet.py b/zenmap/radialnet/gui/RadialNet.py
index 3620e4f29..aae782f68 100644
--- a/zenmap/radialnet/gui/RadialNet.py
+++ b/zenmap/radialnet/gui/RadialNet.py
@@ -835,7 +835,6 @@ class RadialNet(gtk.DrawingArea):
         @rtype: boolean
         @return: Indicator of the event propagation
         """
-        xc, yc = self.__center_of_widget
         pointer = self.get_pointer()
 
         for node in self.__graph.get_nodes():
@@ -871,8 +870,6 @@ class RadialNet(gtk.DrawingArea):
         @rtype: boolean
         @return: Indicator of the event propagation
         """
-        allocation = self.get_allocation()
-
         context = widget.window.cairo_create()
 
         context.rectangle(*event.area)
@@ -894,7 +891,6 @@ class RadialNet(gtk.DrawingArea):
         self.__center_of_widget = (allocation.width / 2,
                                    allocation.height / 2)
 
-        aw, ah = allocation.width, allocation.height
         xc, yc = self.__center_of_widget
 
         ax, ay = self.__translation
@@ -926,7 +922,6 @@ class RadialNet(gtk.DrawingArea):
 
                 if node.get_draw_info('region') is not None and not_grouped:
 
-                    x, y = node.get_cartesian_coordinate()
                     xc, yc = self.__center_of_widget
                     r, g, b = REGION_COLORS[node.get_draw_info('region')]
 
@@ -1908,7 +1903,6 @@ class NetNode(Node):
                     for port in host.ports:
                         if port["port_state"] == "filtered":
                             return True
-                            break
                 return False
             elif info == "ports":
                 ports = list()
diff --git a/zenmap/zenmapCore/NSEDocParser.py b/zenmap/zenmapCore/NSEDocParser.py
index aeb9add34..2e916d450 100644
--- a/zenmap/zenmapCore/NSEDocParser.py
+++ b/zenmap/zenmapCore/NSEDocParser.py
@@ -161,7 +161,6 @@ def nsedoc_parse(text):
     "list_item_end", "text", or "code". The types "text" and "code" have a text
     member with the text that they contain."""
     i = 0
-    j = 0
     in_list = False
 
     while i < len(text):
diff --git a/zenmap/zenmapGUI/NmapOutputViewer.py b/zenmap/zenmapGUI/NmapOutputViewer.py
index 55e92f81d..e128f3bab 100644
--- a/zenmap/zenmapGUI/NmapOutputViewer.py
+++ b/zenmap/zenmapGUI/NmapOutputViewer.py
@@ -353,7 +353,6 @@ class NmapOutputViewer (gtk.VBox):
 
         # Seek to the end of the most recent read.
         self.command_execution.stdout_file.seek(self.output_file_pointer)
-        pos = self.command_execution.stdout_file.tell()
 
         try:
             new_output = self.command_execution.stdout_file.read()
@@ -362,8 +361,6 @@ class NmapOutputViewer (gtk.VBox):
             return
 
         self.output_file_pointer = self.command_execution.stdout_file.tell()
-        # print "read %d -> %d %d" % (
-        #         pos, self.output_file_pointer, len(new_output))
 
         v_adj = self.scrolled.get_vadjustment()
         if new_output and v_adj is not None:
diff --git a/zenmap/zenmapGUI/OptionBuilder.py b/zenmap/zenmapGUI/OptionBuilder.py
index 0da45c40f..5bd400b98 100644
--- a/zenmap/zenmapGUI/OptionBuilder.py
+++ b/zenmap/zenmapGUI/OptionBuilder.py
@@ -374,7 +374,6 @@ class OptionTab(object):
         return label_widget, option_list_widget
 
     def __parse_option_check(self, option_check):
-        arg_type = option_check.getAttribute(u'arg_type')
         option = option_check.getAttribute(u'option')
         label = _(option_check.getAttribute(u'label'))
         short_desc = _(option_check.getAttribute(u'short_desc'))
diff --git a/zenmap/zenmapGUI/higwidgets/higspinner.py b/zenmap/zenmapGUI/higwidgets/higspinner.py
index 93793daee..c80613fb5 100644
--- a/zenmap/zenmapGUI/higwidgets/higspinner.py
+++ b/zenmap/zenmapGUI/higwidgets/higspinner.py
@@ -283,7 +283,6 @@ class HIGSpinnerCache:
     def load_static_from_lookup(self, icon_name="gnome-spinner-rest",
                                 key_name=None):
         icon_info = self.icon_theme.lookup_icon(icon_name, -1, 0)
-        size = icon_info.get_base_size()
         filename = icon_info.get_filename()
 
         # Now that we have a filename, call load_static_from_filename()