pep8 cleanup, also print message when attempting to run in animation player mode.

4 files changed, 32 insertions, 19 deletions

diff --git a/release/scripts/modules/addon_utils.py b/release/scripts/modules/addon_utils.py
index cf74282d064..5aed0581ea9 100644
--- a/release/scripts/modules/addon_utils.py
+++ b/release/scripts/modules/addon_utils.py
@@ -33,6 +33,7 @@ import bpy as _bpy
 
 error_duplicates = False
 
+
 def paths():
     # RELEASE SCRIPTS: official scripts distributed in Blender releases
     paths = _bpy.utils.script_paths("addons")
diff --git a/release/scripts/modules/bpy/__init__.py b/release/scripts/modules/bpy/__init__.py
index 9c48dc89f83..0add2b3e6cd 100644
--- a/release/scripts/modules/bpy/__init__.py
+++ b/release/scripts/modules/bpy/__init__.py
@@ -43,6 +43,7 @@ from . import utils, path, ops
 # fake operator module
 ops = ops.ops_fake_module
 
+
 def _main():
     import sys as _sys
 
diff --git a/release/scripts/modules/bpy_extras/io_utils.py b/release/scripts/modules/bpy_extras/io_utils.py
index bd01897c639..0a3f1392653 100644
--- a/release/scripts/modules/bpy_extras/io_utils.py
+++ b/release/scripts/modules/bpy_extras/io_utils.py
@@ -159,14 +159,19 @@ def axis_conversion(from_forward='Y', from_up='Z', to_forward='Y', to_up='Z'):
         raise Exception("invalid axis arguments passed, "
                         "can't use up/forward on the same axis.")
 
-    value = reduce(int.__or__, (_axis_convert_num[a] << (i * 3) for i, a in enumerate((from_forward, from_up, to_forward, to_up))))
+    value = reduce(int.__or__, (_axis_convert_num[a] << (i * 3)
+                   for i, a in enumerate((from_forward,
+                                          from_up,
+                                          to_forward,
+                                          to_up,
+                                          ))))
 
     for i, axis_lut in enumerate(_axis_convert_lut):
         if value in axis_lut:
             return Matrix(_axis_convert_matrix[i])
     assert(0)
 
-    
+
 def axis_conversion_ensure(operator, forward_attr, up_attr):
     """
     Function to ensure an operator has valid axis conversion settings, intended
@@ -174,9 +179,9 @@ def axis_conversion_ensure(operator, forward_attr, up_attr):
 
     :arg operator: the operator to access axis attributes from.
     :type operator: :class:`Operator`
-    :arg forward_attr: 
+    :arg forward_attr: attribute storing the forward axis
     :type forward_attr: string
-    :arg up_attr: the directory the *filepath* will be referenced from (normally the export path).
+    :arg up_attr: attribute storing the up axis
     :type up_attr: string
     :return: True if the value was modified.
     :rtype: boolean
@@ -184,9 +189,9 @@ def axis_conversion_ensure(operator, forward_attr, up_attr):
     def validate(axis_forward, axis_up):
         if axis_forward[-1] == axis_up[-1]:
             axis_up = axis_up[0:-1] + 'XYZ'[('XYZ'.index(axis_up[-1]) + 1) % 3]
-        
+
         return axis_forward, axis_up
-    
+
     change = False
 
     axis = getattr(operator, forward_attr), getattr(operator, up_attr)
diff --git a/release/scripts/modules/bpy_extras/mesh_utils.py b/release/scripts/modules/bpy_extras/mesh_utils.py
index c42d3d0236a..ecd620ff2c9 100644
--- a/release/scripts/modules/bpy_extras/mesh_utils.py
+++ b/release/scripts/modules/bpy_extras/mesh_utils.py
@@ -170,8 +170,8 @@ def edge_loops_from_faces(mesh, faces=None, seams=()):
                 # from knowing the last 2, look for th next.
                 ed_adj = edges[context_loop[-1]]
                 if len(ed_adj) != 2:
-
-                    if other_dir and flipped == False:  # the original edge had 2 other edges
+                    # the original edge had 2 other edges
+                    if other_dir and flipped == False:
                         flipped = True  # only flip the list once
                         context_loop.reverse()
                         ed_adj[:] = []
@@ -259,13 +259,15 @@ def edge_loops_from_edges(mesh, edges=None):
 
 def ngon_tesselate(from_data, indices, fix_loops=True):
     '''
-    Takes a polyline of indices (fgon)
-    and returns a list of face indicie lists.
-    Designed to be used for importers that need indices for an fgon to create from existing verts.
+    Takes a polyline of indices (fgon) and returns a list of face
+    indicie lists. Designed to be used for importers that need indices for an
+    fgon to create from existing verts.
 
     from_data: either a mesh, or a list/tuple of vectors.
-    indices: a list of indices to use this list is the ordered closed polyline to fill, and can be a subset of the data given.
-    fix_loops: If this is enabled polylines that use loops to make multiple polylines are delt with correctly.
+    indices: a list of indices to use this list is the ordered closed polyline
+       to fill, and can be a subset of the data given.
+    fix_loops: If this is enabled polylines that use loops to make multiple
+       polylines are delt with correctly.
     '''
 
     from mathutils.geometry import tesselate_polygon
@@ -276,7 +278,8 @@ def ngon_tesselate(from_data, indices, fix_loops=True):
         return []
 
     def mlen(co):
-        return abs(co[0]) + abs(co[1]) + abs(co[2])  # manhatten length of a vector, faster then length
+        # manhatten length of a vector, faster then length
+        return abs(co[0]) + abs(co[1]) + abs(co[2])
 
     def vert_treplet(v, i):
         return v, vector_to_tuple(v, 6), i, mlen(v)
@@ -296,7 +299,8 @@ def ngon_tesselate(from_data, indices, fix_loops=True):
         else:
             verts = [from_data.vertices[i].co for ii, i in enumerate(indices)]
 
-        for i in range(len(verts) - 1, 0, -1):  # same as reversed(xrange(1, len(verts))):
+        # same as reversed(range(1, len(verts))):
+        for i in range(len(verts) - 1, 0, -1):
             if verts[i][1] == verts[i - 1][0]:
                 verts.pop(i - 1)
 
@@ -304,14 +308,16 @@ def ngon_tesselate(from_data, indices, fix_loops=True):
 
     else:
         '''
-        Seperate this loop into multiple loops be finding edges that are used twice
-        This is used by lightwave LWO files a lot
+        Seperate this loop into multiple loops be finding edges that are
+        used twice. This is used by lightwave LWO files a lot
         '''
 
         if type(from_data) in (tuple, list):
-            verts = [vert_treplet(Vector(from_data[i]), ii) for ii, i in enumerate(indices)]
+            verts = [vert_treplet(Vector(from_data[i]), ii)
+                     for ii, i in enumerate(indices)]
         else:
-            verts = [vert_treplet(from_data.vertices[i].co, ii) for ii, i in enumerate(indices)]
+            verts = [vert_treplet(from_data.vertices[i].co, ii)
+                     for ii, i in enumerate(indices)]
 
         edges = [(i, i - 1) for i in range(len(verts))]
         if edges: