made scripts pass the pep8 test (though not fully pep8 yet)

added comment in header to know if a script has been converted or not.

release/scripts/ui/properties_world.py

@@ -3,9 +3,10 @@
 # http://www.gnu.org/copyleft/gpl.html. Installing, importing or otherwise
 # using this module constitutes acceptance of the terms of this License.
 
-
+# <pep8 compliant>
 import bpy
 
+
 class WorldButtonsPanel(bpy.types.Panel):
     bl_space_type = 'PROPERTIES'
     bl_region_type = 'WINDOW'
@@ -16,6 +17,7 @@ class WorldButtonsPanel(bpy.types.Panel):
         rd = context.scene.render_data
         return (context.world) and (not rd.use_game_engine) and (rd.engine in self.COMPAT_ENGINES)
 
+
 class WORLD_PT_preview(WorldButtonsPanel):
     bl_label = "Preview"
     COMPAT_ENGINES = set(['BLENDER_RENDER'])
@@ -23,6 +25,7 @@ class WORLD_PT_preview(WorldButtonsPanel):
     def draw(self, context):
         self.layout.template_preview(context.world)
 
+
 class WORLD_PT_context_world(WorldButtonsPanel):
     bl_label = ""
     bl_show_header = False
@@ -46,6 +49,7 @@ class WORLD_PT_context_world(WorldButtonsPanel):
         elif world:
             split.template_ID(space, "pin_id")
 
+
 class WORLD_PT_world(WorldButtonsPanel):
     bl_label = "World"
     COMPAT_ENGINES = set(['BLENDER_RENDER'])
@@ -67,6 +71,7 @@ class WORLD_PT_world(WorldButtonsPanel):
         col.active = world.blend_sky
         row.column().itemR(world, "ambient_color")
 
+
 class WORLD_PT_mist(WorldButtonsPanel):
     bl_label = "Mist"
     COMPAT_ENGINES = set(['BLENDER_RENDER'])
@@ -91,6 +96,7 @@ class WORLD_PT_mist(WorldButtonsPanel):
 
         layout.itemR(world.mist, "falloff")
 
+
 class WORLD_PT_stars(WorldButtonsPanel):
     bl_label = "Stars"
     COMPAT_ENGINES = set(['BLENDER_RENDER'])
@@ -113,6 +119,7 @@ class WORLD_PT_stars(WorldButtonsPanel):
         flow.itemR(world.stars, "min_distance", text="Min. Dist")
         flow.itemR(world.stars, "average_separation", text="Separation")
 
+
 class WORLD_PT_ambient_occlusion(WorldButtonsPanel):
     bl_label = "Ambient Occlusion"
     COMPAT_ENGINES = set(['BLENDER_RENDER'])