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clearCache([allNodes=boolean], [computed=boolean], [dirty=boolean])

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

clearCache is NOT undoable, NOT queryable, and NOT editable.

Even though dependency graph values are computed or dirty they may still occupy space temporarily within the nodes. This command goes in to all of the data that can be regenerated if required and removes it from the caches (datablocks), thus clearing up space in memory.

Return value

intNumber of items removed from caches


dependency, graph, cache, optimize, performance, memory


allNodes, computed, dirty
Long name (short name) Argument types Properties
allNodes(all) boolean create
If toggled then all nodes in the graph are cleared. Otherwise only those nodes that are selected are cleared.
computed(c) boolean create
If toggled then remove all data that is computable. (Warning: If the data is requested for redraw then the recompute will immediately fill the data back in.)
dirty(d) boolean create
If toggled then remove all heavy data that is dirty.

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

# Clear one node's datablock cache
cmds.clearCache( 'node' )
# Clear caches in all dependency graph nodes
cmds.clearCache( all=True )