Armature Operators

bpy.ops.armature.align()

Align selected bones to the active bone (or to their parent)

bpy.ops.armature.armature_layers(layers=(False, False, False, False, False, False, False, False, False, False, False, False, False, False, False, False, False, False, False, False, False, False, False, False, False, False, False, False, False, False, False, False))

Change the visible armature layers

Parameters:

layers (boolean array of 32 items, (optional)) – Layer, Armature layers to make visible

bpy.ops.armature.assign_to_collection(collection='DEFAULT', new_collection_name='')

Assign bones to a collection

Parameters:

• collection (enum in ['DEFAULT'], (optional)) – Collection, The bone collection to move the selected bones to

• new_collection_name (string, (optional, never None)) – Name, Name of the newly added bone collection

bpy.ops.armature.autoside_names(type='XAXIS')

Automatically renames the selected bones according to which side of the target axis they fall on

Parameters:

type (enum in ['XAXIS', 'YAXIS', 'ZAXIS'], (optional)) –

Axis, Axis to tag names with

• XAXIS X-Axis – Left/Right.

• YAXIS Y-Axis – Front/Back.

• ZAXIS Z-Axis – Top/Bottom.

bpy.ops.armature.bone_layers(layers=(False, False, False, False, False, False, False, False, False, False, False, False, False, False, False, False, False, False, False, False, False, False, False, False, False, False, False, False, False, False, False, False))

Change the layers that the selected bones belong to

Parameters:

layers (boolean array of 32 items, (optional)) – Layer, Armature layers that bone belongs to

bpy.ops.armature.bone_primitive_add(name='Bone')

Add a new bone located at the 3D cursor

Parameters:

name (string, (optional, never None)) – Name, Name of the newly created bone

bpy.ops.armature.calculate_roll(type='POS_X', axis_flip=False, axis_only=False)

Automatically fix alignment of select bones’ axes

Parameters:

• type (enum in ['POS_X', 'POS_Z', 'GLOBAL_POS_X', 'GLOBAL_POS_Y', 'GLOBAL_POS_Z', 'NEG_X', 'NEG_Z', 'GLOBAL_NEG_X', 'GLOBAL_NEG_Y', 'GLOBAL_NEG_Z', 'ACTIVE', 'VIEW', 'CURSOR'], (optional)) – Type

• axis_flip (boolean, (optional)) – Flip Axis, Negate the alignment axis

• axis_only (boolean, (optional)) – Shortest Rotation, Ignore the axis direction, use the shortest rotation to align

bpy.ops.armature.click_extrude()

Create a new bone going from the last selected joint to the mouse position

bpy.ops.armature.collection_add()

Add a new bone collection

bpy.ops.armature.collection_assign(name='')

Add selected bones to the chosen bone collection

Parameters:

name (string, (optional, never None)) – Bone Collection, Name of the bone collection to assign this bone to; empty to assign to the active bone collection

bpy.ops.armature.collection_deselect(name='')

Deselect bones of active Bone Collection

Parameters:

name (string, (optional, never None)) – Bone Collection, Name of the bone collection to deselect bones from; empty use the active bone collection

bpy.ops.armature.collection_move(direction='UP')

Change position of active Bone Collection in list of Bone collections

Parameters:

direction (enum in ['UP', 'DOWN'], (optional)) – Direction, Direction to move the active Bone Collection towards

bpy.ops.armature.collection_remove()

Remove the active bone collection

bpy.ops.armature.collection_select(name='')

Select bones in active Bone Collection

Parameters:

name (string, (optional, never None)) – Bone Collection, Name of the bone collection to select bones from; empty use the active bone collection

bpy.ops.armature.collection_unassign(name='')

Remove selected bones from the active bone collection

Parameters:

name (string, (optional, never None)) – Bone Collection, Name of the bone collection to unassign this bone from; empty to unassign from the active bone collection

bpy.ops.armature.delete(confirm=True)

Remove selected bones from the armature

Parameters:

confirm (boolean, (optional)) – Confirm, Prompt for confirmation

bpy.ops.armature.dissolve()

Dissolve selected bones from the armature

bpy.ops.armature.duplicate(do_flip_names=False)

Make copies of the selected bones within the same armature

Parameters:

do_flip_names (boolean, (optional)) – Flip Names, Try to flip names of the bones, if possible, instead of adding a number extension

bpy.ops.armature.duplicate_move(ARMATURE_OT_duplicate=None, TRANSFORM_OT_translate=None)

Make copies of the selected bones within the same armature and move them

Parameters:

• ARMATURE_OT_duplicate (ARMATURE_OT_duplicate, (optional)) – Duplicate Selected Bone(s), Make copies of the selected bones within the same armature

• TRANSFORM_OT_translate (TRANSFORM_OT_translate, (optional)) – Move, Move selected items

bpy.ops.armature.extrude(forked=False)

Create new bones from the selected joints

Parameters:

forked (boolean, (optional)) – Forked

bpy.ops.armature.extrude_forked(ARMATURE_OT_extrude=None, TRANSFORM_OT_translate=None)

Create new bones from the selected joints and move them

Parameters:

• ARMATURE_OT_extrude (ARMATURE_OT_extrude, (optional)) – Extrude, Create new bones from the selected joints

• TRANSFORM_OT_translate (TRANSFORM_OT_translate, (optional)) – Move, Move selected items

bpy.ops.armature.extrude_move(ARMATURE_OT_extrude=None, TRANSFORM_OT_translate=None)

Create new bones from the selected joints and move them

Parameters:

• ARMATURE_OT_extrude (ARMATURE_OT_extrude, (optional)) – Extrude, Create new bones from the selected joints

• TRANSFORM_OT_translate (TRANSFORM_OT_translate, (optional)) – Move, Move selected items

bpy.ops.armature.fill()

Add bone between selected joint(s) and/or 3D cursor

bpy.ops.armature.flip_names(do_strip_numbers=False)

Flips (and corrects) the axis suffixes of the names of selected bones

Parameters:

do_strip_numbers (boolean, (optional)) – Strip Numbers, Try to remove right-most dot-number from flipped names.Warning: May result in incoherent naming in some cases

bpy.ops.armature.hide(unselected=False)

Tag selected bones to not be visible in Edit Mode

Parameters:

unselected (boolean, (optional)) – Unselected, Hide unselected rather than selected

bpy.ops.armature.layers_show_all(all=True)

Make all armature layers visible

Parameters:

all (boolean, (optional)) – All Layers, Enable all layers or just the first 16 (top row)

bpy.ops.armature.move_to_collection(collection='DEFAULT', new_collection_name='')

Move bones to a collection

Parameters:

• collection (enum in ['DEFAULT'], (optional)) – Collection, The bone collection to move the selected bones to

• new_collection_name (string, (optional, never None)) – Name, Name of the newly added bone collection

bpy.ops.armature.parent_clear(type='CLEAR')

Remove the parent-child relationship between selected bones and their parents

Parameters:

type (enum in ['CLEAR', 'DISCONNECT'], (optional)) – Clear Type, What way to clear parenting

bpy.ops.armature.parent_set(type='CONNECTED')

Set the active bone as the parent of the selected bones

Parameters:

type (enum in ['CONNECTED', 'OFFSET'], (optional)) – Parent Type, Type of parenting

bpy.ops.armature.reveal(select=True)

Reveal all bones hidden in Edit Mode

Parameters:

select (boolean, (optional)) – Select

bpy.ops.armature.roll_clear(roll=0.0)

Clear roll for selected bones

Parameters:

roll (float in [-6.28319, 6.28319], (optional)) – Roll

bpy.ops.armature.select_all(action='TOGGLE')

Toggle selection status of all bones

Parameters:

action (enum in ['TOGGLE', 'SELECT', 'DESELECT', 'INVERT'], (optional)) –

Action, Selection action to execute

• TOGGLE Toggle – Toggle selection for all elements.

• SELECT Select – Select all elements.

• DESELECT Deselect – Deselect all elements.

• INVERT Invert – Invert selection of all elements.

bpy.ops.armature.select_hierarchy(direction='PARENT', extend=False)

Select immediate parent/children of selected bones

Parameters:

• direction (enum in ['PARENT', 'CHILD'], (optional)) – Direction

• extend (boolean, (optional)) – Extend, Extend the selection

bpy.ops.armature.select_less()

Deselect those bones at the boundary of each selection region

bpy.ops.armature.select_linked(all_forks=False)

Select all bones linked by parent/child connections to the current selection

Parameters:

all_forks (boolean, (optional)) – All Forks, Follow forks in the parents chain

bpy.ops.armature.select_linked_pick(deselect=False, all_forks=False)

(De)select bones linked by parent/child connections under the mouse cursor

Parameters:

• deselect (boolean, (optional)) – Deselect

• all_forks (boolean, (optional)) – All Forks, Follow forks in the parents chain

bpy.ops.armature.select_mirror(only_active=False, extend=False)

Mirror the bone selection

Parameters:

• only_active (boolean, (optional)) – Active Only, Only operate on the active bone

• extend (boolean, (optional)) – Extend, Extend the selection

bpy.ops.armature.select_more()

Select those bones connected to the initial selection

bpy.ops.armature.select_similar(type='LENGTH', threshold=0.1)

Select similar bones by property types

Parameters:

• type (enum in ['CHILDREN', 'CHILDREN_IMMEDIATE', 'SIBLINGS', 'LENGTH', 'DIRECTION', 'PREFIX', 'SUFFIX', 'LAYER', 'GROUP', 'SHAPE'], (optional)) – Type

• threshold (float in [0, 1], (optional)) – Threshold

bpy.ops.armature.separate(confirm=True)

Isolate selected bones into a separate armature

Parameters:

confirm (boolean, (optional)) – Confirm, Prompt for confirmation

bpy.ops.armature.shortest_path_pick()

Select shortest path between two bones

bpy.ops.armature.split()

Split off selected bones from connected unselected bones

bpy.ops.armature.subdivide(number_cuts=1)

Break selected bones into chains of smaller bones

Parameters:

number_cuts (int in [1, 1000], (optional)) – Number of Cuts

bpy.ops.armature.switch_direction()

Change the direction that a chain of bones points in (head and tail swap)

bpy.ops.armature.symmetrize(direction='NEGATIVE_X')

Enforce symmetry, make copies of the selection or use existing

Parameters:

direction (enum in ['NEGATIVE_X', 'POSITIVE_X'], (optional)) – Direction, Which sides to copy from and to (when both are selected)