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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 set_slug(apps, schema_editor):
 """ Create a slug for each Event already in the DB. """

    Event = apps.get_model('spectator_events', 'Event')

    for e in Event.objects.all():
        e.slug = generate_slug(e.pk)
        e.save(update_fields=['slug'])