code: def assert_sizes_pair(self, losses, loss_indices):
      assert torch.is_tensor(losses)
      assert c_f.is_list_or_tuple(loss_indices)
      assert len(loss_indices) == 2
      assert all(torch.is_tensor(x) for x in loss_indices)
      assert len(losses) == len(loss_indices[0]) == len(loss_indices[1])
  
imports: import torch
  from ..utils import common_functions
  from ..utils.module_with_records import ModuleWithRecords
label_desc: Use image node_id 16 for calling the BaseReducer obj's underlying member method code with example usage: obj.assert_sizes_pair(losses, loss_indices) without return types