Select Selected - A Pyblish plug-in for Autodesk Maya

select_selected.py

import pyblish.api

from maya import cmds

class SelectSelected(pyblish.api.Selector):
    """Create instance from the currently selected nodes"""
    def process_context(self, context):
        selection = cmds.ls(sl=1)
        if not selection:
            raise pyblish.api.SelectionError("Select something")
        instance = context.create_instance(name=selection[0])

        for node in selection:
            instance.add(node)

        print instance


context = pyblish.api.Context()
SelectSelected().process_all(context)

print context
# Result: [pyblish.plugin.Instance('pCube1')] #