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Synopsis

ls( [object [object...]] , [allPaths=boolean], [assemblies=boolean], [cameras=boolean], [containers=boolean], [dagObjects=boolean], [dependencyNodes=boolean], [exactType=string], [flatten=boolean], [geometry=boolean], [ghost=boolean], [head=int], [hilite=boolean], [intermediateObjects=boolean], [invisible=boolean], [leaf=boolean], [lights=boolean], [live=boolean], [lockedNodes=boolean], [long=boolean], [materials=boolean], [noIntermediate=boolean], [nodeTypes=boolean], [objectsOnly=boolean], [partitions=boolean], [persistentNodes=boolean], [planes=boolean], [preSelectHilite=boolean], [readOnly=boolean], [recursive=boolean], [referencedNodes=boolean], [references=boolean], [renderGlobals=boolean], [renderQualities=boolean], [renderResolutions=boolean], [renderSetups=boolean], [selection=boolean], [sets=boolean], [shapes=boolean], [shortNames=boolean], [showType=boolean], [tail=int], [templated=boolean], [textures=boolean], [transforms=boolean], [type=string], [undeletable=boolean], [untemplated=boolean], [visible=boolean])

Note: Strings representing object names and arguments must be separated by commas. This is not depicted in the synopsis.

ls is undoable, NOT queryable, and NOT editable.

The ls command returns the names (and optionally the type names) of objects in the scene. The most common use of ls is to filter or match objects based on their name (using wildcards) or based on their type. By default ls will match any object in the scene but it can also be used to filter or list the selected objects when used in conjunction with the -selection flag. If type names are requested, using the -showType flag, they will be interleaved with object names so the result will be pairs of <object, type> values. Internal nodes (for example itemFilter nodes) are typically filtered so that only scene objects are returned. However, using a wildcard will cause all the nodes matching the wild card to show up, including internal nodes. For example, ls * will list all nodes whether internal or not. When Maya is in relativeNames mode, the ls command will return names relative to the current namespace and ls * will list from the the current namespace. For more details, please refer to the -relativeNames flag of the namespace command.

Return value

string[]

Flags

allPaths, assemblies, cameras, containers, dagObjects, dependencyNodes, exactType, flatten, geometry, ghost, head, hilite, intermediateObjects, invisible, leaf, lights, live, lockedNodes, long, materials, noIntermediate, nodeTypes, objectsOnly, partitions, persistentNodes, planes, preSelectHilite, readOnly, recursive, referencedNodes, references, renderGlobals, renderQualities, renderResolutions, renderSetups, selection, sets, shapes, shortNames, showType, tail, templated, textures, transforms, type, undeletable, untemplated, visible
Long name (short name) Argument types Properties
long(l) boolean create
Return full path names for Dag objects. By default the shortest unique name is returned.
shortNames(sn) boolean create
Return short attribute names. By default long attribute names are returned.
head(hd) int create
This flag specifies the maximum number of elements to be returned from the beginning of the list of items. Note: each type flag will return at most this many items so if multiple type flags are specified then the number of items returned can be greater than this amount.
tail(tl) int create
This flag specifies the maximum number of elements to be returned from the end of the list of items. Note: each type flag will return at most this many items so if multiple type flags are specified then the number of items returned can be greater than this amount
type(typ) string createmultiuse
List all objects of the specified type. This flag can appear multiple times on the command line. Note: the type passed to this flag is the same type name returned from the -showType flag. Note: some selection items in Maya do not have a specific object/data type associated with them and will return "untyped" when listed with this flag.
This flag cannot be used in conjunction with the -exactType flag.
exactType(et) string createmultiuse
List all objects of the specified type, but not objects that are descendents of that type. This flag can appear multiple times on the command line. Note: the type passed to this flag is the same type name returned from the -showType flag.
This flag cannot be used in conjunction with the -type flag.
showType(st) boolean create
List the type of each object after its name.
objectsOnly(o) boolean create
When this flag is set only object names will be returned and components/attributes will be ignored.
selection(sl) boolean create
List objects that are currently selected.
live(lv) boolean create
List objects that are currently live.
hilite(hl) boolean create
List objects that are currently hilited for component selection.
preSelectHilite(psh) boolean create
List components that are currently hilited for pre-selection.
geometry(g) boolean create
List geometric Dag objects.
dependencyNodes(dep) boolean create
List dependency nodes. (including Dag objects)
dagObjects(dag) boolean create
List Dag objects of any type. If object name arguments are passed to the command then this flag will list all Dag objects below the specified object(s).
leaf(lf) boolean create
List all leaf nodes in Dag. This flag is a modifier and must be used in conjunction with the -dag flag.
assemblies(assemblies) boolean create
List top level transform Dag objects
allPaths(ap) boolean create
List all paths to nodes in DAG. This flag only works if -dag is also specified or if an object name is supplied.
transforms(tr) boolean create
List transform objects.
shapes(s) boolean create
List shape objects.
lights(lt) boolean create
List light shapes.
cameras(ca) boolean create
List camera shapes.
planes(pl) boolean create
List construction plane shapes.
partitions(pr) boolean create
List partitions.
sets(set) boolean create
List sets.
textures(tex) boolean create
List textures.
materials(mat) boolean create
List materials or shading groups.
renderQualities(rq) boolean create
List named render qualities.
renderResolutions(rr) boolean create
List render resolutions.
renderGlobals(rg) boolean create
List render globals.
renderSetups(rs) boolean create
Alias for -renderGlobals.
nodeTypes(nt) boolean create
Lists all registered node types.
readOnly(ro) boolean create
Returns referenced nodes. Referenced nodes are read only. NOTE: Obsolete. Please use "-referencedNodes".
referencedNodes(rn) boolean create
Returns referenced nodes. Referenced nodes are read only.
undeletable(ud) boolean create
Returns nodes that cannot be deleted (which includes locked nodes). These nodes also cannot be renamed.
lockedNodes(ln) boolean create
Returns locked nodes, which cannot be deleted or renamed. However, their status may change.
persistentNodes(pn) boolean create
Returns persistent nodes, which are nodes that stay in the Maya session after a file > new.
flatten(fl) boolean create
Flattens the returned list of objects so that each component is identified individually.
visible(v) boolean create
List only visible dag nodes.
invisible(iv) boolean create
List only invisible dag nodes.
intermediateObjects(io) boolean create
List only intermediate dag nodes.
noIntermediate(ni) boolean create
List only non intermediate dag nodes.
templated(tm) boolean create
List only templated dag nodes.
untemplated(ut) boolean create
List only un-templated dag nodes.
ghost(gh) boolean create
List ghosting objects.
recursive(r) boolean create
When set to true, this command will look for name matches in all namespaces. When set to false, this command will only look for matches in namespaces that are requested (e.g. by specifying a name containing the ':'... "ns1:pSphere1").
references(rf) boolean create
List references associated with files. Excludes special reference nodes such as the sharedReferenceNode and unknown reference nodes.
containers(con) boolean create
List containers. Includes both standard containers as well as other types of containers such as dagContainers.

Flag can appear in Create mode of command Flag can appear in Edit mode of command
Flag can appear in Query mode of command Flag can have multiple arguments, passed either as a tuple or a list.

Python examples

import maya.cmds as cmds

# create some objects to operate on and select them all.
# Note that there are two objects named circle1;
cmds.circle( n='circle1' )
cmds.group()
cmds.circle( n='circle1' )
cmds.sphere( n='sphere1' )
cmds.group()
cmds.instance()
cmds.select( ado=True )

# list all objects
cmds.ls()

# List all selected objects
cmds.ls( selection=True )

# List all hilited objects
cmds.ls( hilite=True )

# List last selected object
cmds.ls( selection=True, tail=1 )

# List all objects named "sphere1". Note that since sphere1 is
# instanced, the command below lists only the first instance.
cmds.ls( 'sphere1' )

# To list all instances of sphere1, use the -ap/allPaths flag.
cmds.ls( 'sphere1', ap=True )

# List all selected objects named "group*"
cmds.ls( 'group*', sl=True )

# List all geometry, lights and cameras in the DAG.
cmds.ls( geometry=True, lights=True, cameras=True )

# List all shapes in the dag.
cmds.ls( shapes=True )

# One thing to note is that it is better to always use the
# -l/long flag when listing nodes without any filter. This is
# because there may be two nodes with the same name (in this
# example, circle1). 'ls' will list the names of all the objects
# in the scene. Objects with the same name need a qualified
# path name which uniquely identifies the object. A command
# to select all objects such as "select `ls`" will fail because
# the object lookup can't resolve which "circle1" object is
# intended. To select all objects, you need the following:
cmds.select(cmds.ls(sl=True))

# When trying to find a list of all objects of a specific
# type, one approach might be to list all objects and then
# use the nodeType command to then filter the list. As in:
allObjects = cmds.ls(l=True)
for obj in allObjects:
   if cmds.nodeType(obj) == 'surfaceShape':
     print obj

# The problem with this is that 'nodeType' returns the
# most derived type of the node. In this example, "surfaceShape"
# is a base type for nurbsSurface so nothing will be printed.
# To do this properly, the -typ/type flag should be used
# to list objects of a specific type as in:
allObjects = cmds.ls(type='surfaceShape')
for obj in allObjects:
    print obj

# List all geometry shapes and their types
cmds.ls( type='geometryShape', showType=True )

# List all paths to all leaf nodes in the DAG
cmds.ls( dag=True, lf=True, ap=True )

# List all nodes below the selected node
cmds.ls( dag=True, ap=True, sl=True )

# List all dag nodes that are read-only (i.e. referenced nodes)
cmds.ls( dag=True, ro=True )

# List all ghosting objects
cmds.ls( ghost=True )

# List reference nodes associated with specific files
cmds.ls( references=True )

# List all reference nodes, including unknown and shared reference nodes
cmds.ls( type='reference' )