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attrCompatibility( [string [string]] , [addAttr=boolean], [clear=boolean], [dumpTable=boolean], [enable=boolean], [nodeRename=string], [pluginNode=string], [removeAttr=boolean], [renameAttr=string], [type=string], [version=string])

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

attrCompatibility is undoable, NOT queryable, and NOT editable.

This command is used by Maya to handle compatibility issues between file format versions by providing a mechanism to describe differences between two versions. Plug-in writers can make use of this command to handle attribute compatibility changes to files.

The first optional command argument argument is a node name and the second optional command argument is an attribute name.

Warning: Only use this command to describe changes in names or attributes of nodes that you have written as plugins. Do not use this command to change information about builtin dependency graph nodes. Removing attributes on a plug-in node is a special case. Use a separate attrCompatibility call with pluginNode flag and name so that these attributes can be tracked even though the plug-in may not be loaded.

Return value



addAttr, clear, dumpTable, enable, nodeRename, pluginNode, removeAttr, renameAttr, type, version
Long name (short name) Argument types Properties
addAttr(a) boolean create
Add the given attribute to the named node.
clear(clr) boolean create
Clear out the compatibility table. This is only used internally for debugging purposes.
dumpTable(dmp) boolean create
Dump the current contents of the compatibility table. This is only used internally for debugging purposes.
enable(e) boolean create
Enable or disable the compatibility table. This is only used internally for debugging purposes.
nodeRename(nr) string create
Replace all uses of the node type 'nodeName' with given string.
renameAttr(r) string create
Rename the given attribute name of the given node with the given string.
removeAttr(rm) boolean create
Remove the given attribute from the named node.
type(typ) string create
Change the type of the given attribute to the given type.
version(v) string create
Set the version target for subsequent commands to the given string.
pluginNode(pn) string create
Registers the string argument as a plug-in node type. This is necessary for subsequent attrCompatibility calls that reference node attributes of unloaded plug-ins. Specifically, this works in the case when attributes are being removed.

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

# Rename '.x' attributes in old files to '.tx' for all nodes
# of type 'transform'
cmds.attrCompatibility( 'transform', 'x', r='tx' )

# Rename the old 'group' node to the new 'transform' node
cmds.attrCompatibility( 'group', nr='transform' )

# This will cause all subsequent attrCompatibility calls to translate
# files from older versions to version 1.0.
cmds.attrCompatibility( v='1.0' )