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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 forwards(apps, schema_editor):
 """ Create initial recurrence rules. """

    RecurrenceRule = apps.get_model('icekit_events', 'RecurrenceRule')
    for description, recurrence_rule in RULES:
        RecurrenceRule.objects.get_or_create(
            description=description,
            defaults=dict(recurrence_rule=recurrence_rule),
        )