code: def get_review_history(brain_or_object, rev=True):
      
      obj = get_object(brain_or_object)
      review_history = []
      try:
          workflow = get_tool("portal_workflow")
          review_history = workflow.getInfoFor(obj, 'review_history')
      except WorkflowException as e:
          message = str(e)
          logger.error("Cannot retrieve review_history on {}: {}".format(
              obj, message))
      if not isinstance(review_history, (list, tuple)):
          logger.error("get_review_history: expected list, recieved {}".format(
              review_history))
          review_history = []
      if rev is True:
          review_history.reverse()
      return review_history
docs: Get the review history for the given brain or context.
  
      :param brain_or_object: A single catalog brain or content object
      :type brain_or_object: ATContentType/DexterityContentType/CatalogBrain
      :returns: Workflow history
      :rtype: [{}, ...]