I put my code out of the models module in a file called events.py, then in the init.py added an import for events. Then changed the import in the events.py file, that was wrong. It was as follows:

__init__.py

from . import controllers

from . import models

import events

events.py

from odoo.addons.connector.event import on_record_create

@on_record_create()

def procesa_creacion_de_usuarios(session, model_name, record_id, vals):
       print model_name

And it worked!