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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 _add_status(scheduling_block):
 """This function adds status fields to all the section in the scheduling block instance"""

        scheduling_block['status'] = "created"
        for block in scheduling_block:
            if isinstance(scheduling_block[block], list):
                for field in scheduling_block[block]:
                    field['status'] = 'created'
        return scheduling_block