pymel.core.system.attrCompatibility

attrCompatibility(*args, **kwargs)

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 youhave written as plugins. Do notuse 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.

Flags:

Long name (short name)		Argument Types	Properties
addAttr (a)		bool
	Add the given attribute to the named node.
clear (clr)		bool
	Clear out the compatibility table. This is only used internally for debugging purposes.
dumpTable (dmp)		bool
	Dump the current contents of the compatibility table. This is only used internally for debugging purposes.
enable (e)		bool
	Enable or disable the compatibility table. This is only used internally for debugging purposes.
nodeRename (nr)		unicode
	Replace all uses of the node type ‘nodeName’ with given string.
pluginNode (pn)		unicode
	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 commandFlag can have multiple arguments, passed either as a tuple or a list.
removeAttr (rm)		bool
	Remove the given attribute from the named node.
renameAttr (r)		unicode
	Rename the given attribute name of the given node with the given string.
type (typ)		unicode
	Change the type of the given attribute to the given type.
version (v)		unicode
	Set the version target for subsequent commands to the given string.

Derived from mel command maya.cmds.attrCompatibility

Example:

import pymel.core as pm

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

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

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