2728             _rev = None  variable in ClassPropertiesAndMethods.test_basic_inheritance.madtuple
2730                 if self._rev is not None:
2731                     return self._rev
2734                 self._rev = self.__class__(L)
2735                 return self._rev
2763             _rev = None  variable in ClassPropertiesAndMethods.test_basic_inheritance.madstring
2765                 if self._rev is not None:
2766                     return self._rev
2769                 self._rev = self.__class__("".join(L))
2770                 return self._rev
2827             _rev = None  variable in ClassPropertiesAndMethods.test_basic_inheritance.madunicode
2829                 if self._rev is not None:
2830                     return self._rev
2833                 self._rev = self.__class__("".join(L))
2834                 return self._rev