<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def pre_create(sender, model):
 """ Callback before creating any new model Identify the creator of the new model & set the created timestamp to now. """


    model.created = dt.utcnow()
    model.creator = goldman.sess.login