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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def create(cls, name, email, cb):
 """ Create the basic structure of a player """

        it = cls(name, create_structure=True)
        it.value['email'] = email

        # In an actual application you'd probably want to use 'add',
        # but since this app might be run multiple times, you don't
        # want to get KeyExistsError
        cb.upsert_multi(ItemSequence([it]))
        return it