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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 get_processing_block_event():
 """Return the latest Processing Block event"""

    event = DB.rpoplpush('processing_block_events',
                         'processing_block_event_history')
    if event:
        event = json.loads(event.decode('utf-8'))
    return event