code: def common_items_percentage(pronac, seg_common_items):
      
      if len(seg_common_items) == 0:
          return 0
  
      project_items = get_project_items(pronac).values[:, 0]
      project_items_amount = len(project_items)
  
      if project_items_amount == 0:
          return 1
  
      common_found_items = sum(
          seg_common_items.isin(project_items)['idPlanilhaItens']
      )
  
      return common_found_items / project_items_amount
docs: Returns the percentage of items in a project that are
      common in the cultural segment.