Cleanup: use identity for None comparisons

11 files changed, 39 insertions, 39 deletions

diff --git a/rigify/generate.py b/rigify/generate.py
index 27ccf141..4fb83f5d 100644
--- a/rigify/generate.py
+++ b/rigify/generate.py
@@ -279,7 +279,7 @@ def generate_rig(context, metarig):
             obj.select = True
             bpy.ops.object.mode_set(mode='EDIT')
             scripts = rig.generate()
-            if scripts != None:
+            if scripts is not None:
                 ui_scripts += [scripts[0]]
         t.tick("Generate rigs: ")
     except Exception as e:
diff --git a/rigify/rig_ui_template.py b/rigify/rig_ui_template.py
index c37b9db6..717410da 100644
--- a/rigify/rig_ui_template.py
+++ b/rigify/rig_ui_template.py
@@ -386,7 +386,7 @@ class Rigify_Arm_FK2IK(bpy.types.Operator):
 
     @classmethod
     def poll(cls, context):
-        return (context.active_object != None and context.mode == 'POSE')
+        return (context.active_object is not None and context.mode == 'POSE')
 
     def execute(self, context):
         use_global_undo = context.user_preferences.edit.use_global_undo
@@ -416,7 +416,7 @@ class Rigify_Arm_IK2FK(bpy.types.Operator):
 
     @classmethod
     def poll(cls, context):
-        return (context.active_object != None and context.mode == 'POSE')
+        return (context.active_object is not None and context.mode == 'POSE')
 
     def execute(self, context):
         use_global_undo = context.user_preferences.edit.use_global_undo
@@ -447,7 +447,7 @@ class Rigify_Leg_FK2IK(bpy.types.Operator):
 
     @classmethod
     def poll(cls, context):
-        return (context.active_object != None and context.mode == 'POSE')
+        return (context.active_object is not None and context.mode == 'POSE')
 
     def execute(self, context):
         use_global_undo = context.user_preferences.edit.use_global_undo
@@ -479,7 +479,7 @@ class Rigify_Leg_IK2FK(bpy.types.Operator):
 
     @classmethod
     def poll(cls, context):
-        return (context.active_object != None and context.mode == 'POSE')
+        return (context.active_object is not None and context.mode == 'POSE')
 
     def execute(self, context):
         use_global_undo = context.user_preferences.edit.use_global_undo
diff --git a/rigify/rigs/biped/arm/fk.py b/rigify/rigs/biped/arm/fk.py
index 740b3277..03ff6fc9 100644
--- a/rigify/rigs/biped/arm/fk.py
+++ b/rigify/rigs/biped/arm/fk.py
@@ -73,7 +73,7 @@ class Rig:
 
         # Create hand widget
         ob = create_widget(self.obj, hand)
-        if ob != None:
+        if ob is not None:
             verts = [(0.7, 1.5, 0.0), (0.7, -0.25, 0.0), (-0.7, -0.25, 0.0), (-0.7, 1.5, 0.0), (0.7, 0.723, 0.0), (-0.7, 0.723, 0.0), (0.7, 0.0, 0.0), (-0.7, 0.0, 0.0)]
             edges = [(1, 2), (0, 3), (0, 4), (3, 5), (4, 6), (1, 6), (5, 7), (2, 7)]
             mesh = ob.data
diff --git a/rigify/rigs/biped/arm/ik.py b/rigify/rigs/biped/arm/ik.py
index a57256ea..e4cd2b5d 100644
--- a/rigify/rigs/biped/arm/ik.py
+++ b/rigify/rigs/biped/arm/ik.py
@@ -77,7 +77,7 @@ class Rig:
         # vishand = bone_list[6]
 
         ob = create_widget(self.obj, hand)
-        if ob != None:
+        if ob is not None:
             verts = [(0.7, 1.5, 0.0), (0.7, -0.25, 0.0), (-0.7, -0.25, 0.0), (-0.7, 1.5, 0.0), (0.7, 0.723, 0.0), (-0.7, 0.723, 0.0), (0.7, 0.0, 0.0), (-0.7, 0.0, 0.0)]
             edges = [(1, 2), (0, 3), (0, 4), (3, 5), (4, 6), (1, 6), (5, 7), (2, 7)]
             mesh = ob.data
diff --git a/rigify/rigs/biped/leg/fk.py b/rigify/rigs/biped/leg/fk.py
index 743e3a19..bf055fa5 100644
--- a/rigify/rigs/biped/leg/fk.py
+++ b/rigify/rigs/biped/leg/fk.py
@@ -117,7 +117,7 @@ class Rig:
 
         # Create foot widget
         ob = create_widget(self.obj, foot)
-        if ob != None:
+        if ob is not None:
             verts = [(0.7, 1.5, 0.0), (0.7, -0.25, 0.0), (-0.7, -0.25, 0.0), (-0.7, 1.5, 0.0), (0.7, 0.723, 0.0), (-0.7, 0.723, 0.0), (0.7, 0.0, 0.0), (-0.7, 0.0, 0.0)]
             edges = [(1, 2), (0, 3), (0, 4), (3, 5), (4, 6), (1, 6), (5, 7), (2, 7)]
             mesh = ob.data
diff --git a/rigify/rigs/biped/leg/ik.py b/rigify/rigs/biped/leg/ik.py
index b0df999d..82422e27 100644
--- a/rigify/rigs/biped/leg/ik.py
+++ b/rigify/rigs/biped/leg/ik.py
@@ -326,7 +326,7 @@ class Rig:
         create_circle_widget(self.obj, toe, radius=0.7, head_tail=0.5)
 
         ob = create_widget(self.obj, foot_roll)
-        if ob != None:
+        if ob is not None:
             verts = [(0.3999999761581421, 0.766044557094574, 0.6427875757217407), (0.17668449878692627, 3.823702598992895e-08, 3.2084670920085046e-08), (-0.17668461799621582, 9.874240447516058e-08, 8.285470443070153e-08), (-0.39999961853027344, 0.7660449147224426, 0.6427879333496094), (0.3562471270561218, 0.6159579753875732, 0.5168500542640686), (-0.35624682903289795, 0.6159582138061523, 0.5168502926826477), (0.20492683351039886, 0.09688037633895874, 0.0812922865152359), (-0.20492687821388245, 0.0968804731965065, 0.08129236847162247)]
             edges = [(1, 2), (0, 3), (0, 4), (3, 5), (1, 6), (4, 6), (2, 7), (5, 7)]
             mesh = ob.data
@@ -337,7 +337,7 @@ class Rig:
             mod.levels = 2
 
         ob = create_widget(self.obj, foot)
-        if ob != None:
+        if ob is not None:
             verts = [(0.7, 1.5, 0.0), (0.7, -0.25, 0.0), (-0.7, -0.25, 0.0), (-0.7, 1.5, 0.0), (0.7, 0.723, 0.0), (-0.7, 0.723, 0.0), (0.7, 0.0, 0.0), (-0.7, 0.0, 0.0)]
             edges = [(1, 2), (0, 3), (0, 4), (3, 5), (4, 6), (1, 6), (5, 7), (2, 7)]
             mesh = ob.data
diff --git a/rigify/rigs/biped/limb_common.py b/rigify/rigs/biped/limb_common.py
index 8cd5ad1c..eadd6374 100644
--- a/rigify/rigs/biped/limb_common.py
+++ b/rigify/rigs/biped/limb_common.py
@@ -48,7 +48,7 @@ class FKLimb:
         bpy.ops.object.mode_set(mode='EDIT')
 
         # Create non-scaling parent bone
-        if self.org_parent != None:
+        if self.org_parent is not None:
             loc = Vector(self.obj.data.edit_bones[self.org_bones[0]].head)
             parent = make_nonscaling_child(self.obj, self.org_parent, loc, "_fk")
         else:
@@ -69,7 +69,7 @@ class FKLimb:
         eantistr = copy_bone(self.obj, self.org_bones[1], make_mechanism_name(strip_org(insert_before_lr(self.org_bones[1], "_antistr.fk"))))
 
         # Create the hinge bones
-        if parent != None:
+        if parent is not None:
             socket1 = copy_bone(self.obj, ulimb, make_mechanism_name(ulimb + ".socket1"))
             socket2 = copy_bone(self.obj, ulimb, make_mechanism_name(ulimb + ".socket2"))
 
@@ -85,7 +85,7 @@ class FKLimb:
 
         elimb_mch_e = eb[elimb_mch]
 
-        if parent != None:
+        if parent is not None:
             socket1_e = eb[socket1]
             socket2_e = eb[socket2]
 
@@ -105,7 +105,7 @@ class FKLimb:
         fantistr_e.use_connect = False
         fantistr_e.parent = ulimb_e
 
-        if parent != None:
+        if parent is not None:
             socket1_e.use_connect = False
             socket1_e.parent = eb[parent]
 
@@ -121,7 +121,7 @@ class FKLimb:
         eantistr_e.length /= 8
         put_bone(self.obj, eantistr, Vector(flimb_e.tail))
 
-        if parent != None:
+        if parent is not None:
             socket1_e.length /= 4
             socket2_e.length /= 3
 
@@ -136,7 +136,7 @@ class FKLimb:
         fantistr_p = pb[fantistr]
         eantistr_p = pb[eantistr]
 
-        if parent != None:
+        if parent is not None:
             socket2_p = pb[socket2]
 
         # Lock axes
@@ -154,7 +154,7 @@ class FKLimb:
             flimb_p.lock_rotation = (True, True, False)
 
         # Set up custom properties
-        if parent != None:
+        if parent is not None:
             prop = rna_idprop_ui_prop_get(ulimb_p, "isolate", create=True)
             ulimb_p["isolate"] = 0.0
             prop["soft_min"] = prop["min"] = 0.0
@@ -230,7 +230,7 @@ class FKLimb:
         add_antistretch_drivers(eantistr_p)
 
         # Hinge constraints / drivers
-        if parent != None:
+        if parent is not None:
             con = socket2_p.constraints.new('COPY_LOCATION')
             con.name = "copy_location"
             con.target = self.obj
@@ -282,7 +282,7 @@ class FKLimb:
         create_limb_widget(self.obj, flimb)
 
         ob = create_widget(self.obj, elimb)
-        if ob != None:
+        if ob is not None:
             verts = [(0.7, 1.5, 0.0), (0.7, -0.25, 0.0), (-0.7, -0.25, 0.0), (-0.7, 1.5, 0.0), (0.7, 0.723, 0.0), (-0.7, 0.723, 0.0), (0.7, 0.0, 0.0), (-0.7, 0.0, 0.0)]
             edges = [(1, 2), (0, 3), (0, 4), (3, 5), (4, 6), (1, 6), (5, 7), (2, 7)]
             mesh = ob.data
@@ -324,10 +324,10 @@ class IKLimb:
         bpy.ops.object.mode_set(mode='EDIT')
 
         # Create non-scaling parent bone
-        if self.org_parent != None:
+        if self.org_parent is not None:
             loc = Vector(self.obj.data.edit_bones[self.org_bones[0]].head)
             parent = make_nonscaling_child(self.obj, self.org_parent, loc, "_ik")
-            if self.pole_parent == None:
+            if self.pole_parent is None:
                 self.pole_parent = parent
         else:
             parent = None
@@ -348,7 +348,7 @@ class IKLimb:
         pole = copy_bone(self.obj, self.org_bones[0], pole_target_name)
         if self.pole_parent == self.org_bones[2]:
             self.pole_parent = elimb_mch
-        if self.pole_parent != None:
+        if self.pole_parent is not None:
             pole_par = copy_bone(self.obj, self.pole_parent, make_mechanism_name(insert_before_lr(pole_target_name, "_parent")))
 
         viselimb = copy_bone(self.obj, self.org_bones[2], "VIS-" + strip_org(insert_before_lr(self.org_bones[2], ".ik")))
@@ -357,7 +357,7 @@ class IKLimb:
         # Get edit bones
         eb = self.obj.data.edit_bones
 
-        if parent != None:
+        if parent is not None:
             parent_e = eb[parent]
         ulimb_e = eb[ulimb]
         flimb_e = eb[flimb]
@@ -368,7 +368,7 @@ class IKLimb:
         ulimb_str_e = eb[ulimb_str]
         flimb_str_e = eb[flimb_str]
         pole_e = eb[pole]
-        if self.pole_parent != None:
+        if self.pole_parent is not None:
             pole_par_e = eb[pole_par]
         viselimb_e = eb[viselimb]
         vispole_e = eb[vispole]
@@ -376,7 +376,7 @@ class IKLimb:
         # Parenting
         ulimb_e.use_connect = False
         ulimb_nostr_e.use_connect = False
-        if parent != None:
+        if parent is not None:
             ulimb_e.parent = parent_e
             ulimb_nostr_e.parent = parent_e
 
@@ -396,7 +396,7 @@ class IKLimb:
         flimb_str_e.parent = ulimb_e.parent
 
         pole_e.use_connect = False
-        if self.pole_parent != None:
+        if self.pole_parent is not None:
             pole_par_e.parent = None
             pole_e.parent = pole_par_e
 
@@ -431,7 +431,7 @@ class IKLimb:
         pole_e.head = flimb_e.head + v2
         pole_e.tail = pole_e.head + (Vector((0, 1, 0)) * (v1.length / 8))
         pole_e.roll = 0.0
-        if parent != None:
+        if parent is not None:
             pole_par_e.length *= 0.75
 
         viselimb_e.tail = viselimb_e.head + Vector((0, 0, v1.length / 32))
@@ -455,7 +455,7 @@ class IKLimb:
         ulimb_str_p = pb[ulimb_str]
         flimb_str_p = pb[flimb_str]
         pole_p = pb[pole]
-        if self.pole_parent != None:
+        if self.pole_parent is not None:
             pole_par_p = pb[pole_par]
         viselimb_p = pb[viselimb]
         vispole_p = pb[vispole]
@@ -506,7 +506,7 @@ class IKLimb:
             prop["soft_min"] = prop["min"] = 0.0
             prop["soft_max"] = prop["max"] = 1.0
 
-        if self.pole_parent != None:
+        if self.pole_parent is not None:
             prop = rna_idprop_ui_prop_get(pole_p, "follow", create=True)
             pole_p["follow"] = 1.0
             prop["soft_min"] = prop["min"] = 0.0
@@ -642,7 +642,7 @@ class IKLimb:
         con.owner_space = 'LOCAL'
 
         # Pole target parent
-        if self.pole_parent != None:
+        if self.pole_parent is not None:
             con = pole_par_p.constraints.new('COPY_TRANSFORMS')
             con.name = "parent"
             con.target = self.obj
@@ -741,7 +741,7 @@ class IKLimb:
         create_sphere_widget(self.obj, pole)
 
         ob = create_widget(self.obj, elimb)
-        if ob != None:
+        if ob is not None:
             verts = [(0.7, 1.5, 0.0), (0.7, -0.25, 0.0), (-0.7, -0.25, 0.0), (-0.7, 1.5, 0.0), (0.7, 0.723, 0.0), (-0.7, 0.723, 0.0), (0.7, 0.0, 0.0), (-0.7, 0.0, 0.0)]
             edges = [(1, 2), (0, 3), (0, 4), (3, 5), (4, 6), (1, 6), (5, 7), (2, 7)]
             mesh = ob.data
@@ -777,7 +777,7 @@ class RubberHoseLimb:
         bpy.ops.object.mode_set(mode='EDIT')
 
         # Create non-scaling parent bone
-        if self.org_parent != None:
+        if self.org_parent is not None:
             loc = Vector(self.obj.data.edit_bones[self.org_bones[0]].head)
             parent = make_nonscaling_child(self.obj, self.org_parent, loc, "_rh")
         else:
@@ -805,7 +805,7 @@ class RubberHoseLimb:
             flimb_e.parent = ulimb_e
             flimb_e.use_connect = True
 
-            if parent != None:
+            if parent is not None:
                 elimb_e.use_connect = False
                 ulimb_e.parent = eb[parent]
 
@@ -877,7 +877,7 @@ class RubberHoseLimb:
             # Get edit bones
             eb = self.obj.data.edit_bones
 
-            if parent != None:
+            if parent is not None:
                 parent_e = eb[parent]
             else:
                 parent_e = None
@@ -907,7 +907,7 @@ class RubberHoseLimb:
             fhoseend_par_e = eb[fhoseend_par]
 
             # Parenting
-            if parent != None:
+            if parent is not None:
                 ulimb1_e.use_connect = False
                 ulimb1_e.parent = parent_e
 
diff --git a/rigify/rigs/finger.py b/rigify/rigs/finger.py
index d33dd09f..70bbc112 100644
--- a/rigify/rigs/finger.py
+++ b/rigify/rigs/finger.py
@@ -252,7 +252,7 @@ class Rig:
 
         # Create control widgets
         w = create_widget(self.obj, ctrl)
-        if w != None:
+        if w is not None:
             mesh = w.data
             verts = [(0, 0, 0), (0, 1, 0), (0.05, 1, 0), (0.05, 1.1, 0), (-0.05, 1.1, 0), (-0.05, 1, 0)]
             if 'Z' in self.primary_rotation_axis:
diff --git a/rigify/rigs/palm.py b/rigify/rigs/palm.py
index f5568210..6bcaad11 100644
--- a/rigify/rigs/palm.py
+++ b/rigify/rigs/palm.py
@@ -146,7 +146,7 @@ class Rig:
 
         # Create control widget
         w = create_widget(self.obj, ctrl)
-        if w != None:
+        if w is not None:
             mesh = w.data
             verts = [(0.15780271589756012, 2.086162567138672e-07, -0.30000004172325134), (0.15780259668827057, 1.0, -0.2000001072883606), (-0.15780280530452728, 0.9999999403953552, -0.20000004768371582), (-0.15780259668827057, -2.086162567138672e-07, -0.29999998211860657), (-0.15780256688594818, -2.7089754439657554e-07, 0.30000004172325134), (-0.1578027755022049, 0.9999998807907104, 0.19999995827674866), (0.15780262649059296, 0.9999999403953552, 0.19999989867210388), (0.1578027456998825, 1.4633496903115883e-07, 0.29999998211860657), (0.15780268609523773, 0.2500001788139343, -0.27500003576278687), (-0.15780264139175415, 0.24999985098838806, -0.2749999761581421), (0.15780262649059296, 0.7500000596046448, -0.22500008344650269), (-0.1578027606010437, 0.7499998807907104, -0.2250000238418579), (0.15780265629291534, 0.75, 0.22499991953372955), (0.15780271589756012, 0.2500000596046448, 0.2749999761581421), (-0.15780261158943176, 0.2499997615814209, 0.27500003576278687), (-0.1578027307987213, 0.7499998807907104, 0.22499997913837433)]
             if 'Z' in self.palm_rotation_axis:
diff --git a/rigify/rigs/pitchipoy/super_finger.py b/rigify/rigs/pitchipoy/super_finger.py
index 3b39c770..86733921 100644
--- a/rigify/rigs/pitchipoy/super_finger.py
+++ b/rigify/rigs/pitchipoy/super_finger.py
@@ -280,7 +280,7 @@ class Rig:
             
         # Create ctrl master widget
         w = create_widget(self.obj, master_name)
-        if w != None:
+        if w is not None:
             mesh = w.data
             verts = [(0, 0, 0), (0, 1, 0), (0.05, 1, 0), (0.05, 1.1, 0), (-0.05, 1.1, 0), (-0.05, 1, 0)]
             if 'Z' in self.params.primary_rotation_axis:
diff --git a/rigify/utils.py b/rigify/utils.py
index c4d14d94..1531403f 100644
--- a/rigify/utils.py
+++ b/rigify/utils.py
@@ -392,7 +392,7 @@ def create_circle_polygon(number_verts, axis, radius=1.0, head_tail=0.0):
 def create_widget(rig, bone_name, bone_transform_name=None):
     """ Creates an empty widget object for a bone, and returns the object.
     """
-    if bone_transform_name == None:
+    if bone_transform_name is None:
         bone_transform_name = bone_name
 
     obj_name = WGT_PREFIX + bone_name