code: def test_push_state_different_length():
      """
      Test what happens if stacks of different lengths are passed in
      """
      ts = TransformerTreeStack(3, 5, 0.0)
      initial = ts.initial_state()
      rand_input = torch.randn(2, 3)
      one_step = ts.push_states([initial], ["A"], rand_input[0:1, :])[0]
      stacks = [one_step, initial]
      stacks = ts.push_states(stacks, ["B", "C"], rand_input)
      assert len(stacks) == 2
      assert len(stacks[0]) == 3
      assert len(stacks[1]) == 2
      assert stacks[0].pop().value.value == "A"
      assert stacks[0].value.value == "B"
      assert stacks[1].value.value == "C"
  
      assert stacks[0].value.key_stack.shape == torch.Size([3, 5])
      assert stacks[1].value.key_stack.shape == torch.Size([2, 5])
  
file_path: stanza/stanza/tests/constituency/test_transformer_tree_stack.py
imports: import pytest
  import torch
  from stanza.models.constituency.transformer_tree_stack import TransformerTreeStack
label_desc: Use image node_id 5 for calling a global function with example usage: test_push_state_different_length() without return types