message: [Python]: add verification of owner_op
diff: @@ -433,6 +433,9 @@ class Tensor(object):
  if (self.is_mapped() == True):
  self.mapped = True
  + if owner_op_type != None:
  + assert self.owner_op != None
  +
  def inline_map(self, ffconfig):
  assert self.mapped == False, "Tensor is already mapped."
  ffc.flexflow_tensor_inline_map(self.handle, ffconfig.handle);
  