code: def clean_names(lines, ensure_unique_names=False, strip_prefix=False,
                  make_database_safe=False):
      names = {}
      for row in lines:
          if strip_prefix:
              row['name'] = row['name'][row['name'].find('-') + 1:]
              if row['indexed_by'] is not None:
                  row['indexed_by'] = row['indexed_by'][row['indexed_by'].find(
                      '-') + 1:]
          if ensure_unique_names:
              i = 1
              while (row['name'] if i == 1 else
                     row['name'] + "-" + str(i)) in names:
                  i += 1
              names[row['name'] if i == 1 else row['name'] + "-" + str(i)] = 1
              if i > 1:
                  row['name'] = row['name'] + "-" + str(i)
          if make_database_safe:
              row['name'] = row['name'].replace("-", "_")
      return lines