def compact_form(self):
    compact_form = hex(self.int_form)[2:]
    if compact_form.endswith('L'):
      compact_form = compact_form[:-1]
    compact_form = (len(compact_form) - 16) * '0' + compact_form
    return compact_form

  # See https://code.google.com/p/google-reader-api/wiki/ItemId for the two forms
  # item IDs.
dataset/ETHPy150Open mihaip/readerisdead/base/api.py/ItemId.compact_form/swapped operands of `-`