def exists (self):
    now = datetime.datetime.now()
    if (self._time - now) > MAXAGE:
      self._time = now
      self._info = Connection.getSliceInfo(self.name)
    if self._info is not None:
      return True
    else:
      return False
dataset/ETHPy150Open fp7-ofelia/ocf/ofam/src/src/foam/flowvisor.py/CachedSlice.exists/swapped operands of `-`