code: def test_deque(doc):
      """std::deque <-> list"""
      lst = m.cast_deque()
      assert lst == [1]
      lst.append(2)
      assert m.load_deque(lst)
      assert m.load_deque(tuple(lst))
  
imports: import pytest
  from pybind11_tests import ConstructorStats, UserType
  from pybind11_tests import stl
label_desc: Use image node_id 2 for calling a global function with example usage: test_deque(doc) without return types