def test_dict_nested():
    filename, mode = 'test.h5', 'w'

    dd = NESTED_DICT

    dump(dd, filename, mode)
    dd_hkl = load(filename)
    
    ll_hkl = dd_hkl["level1_3"]["level2_1"]["level3_1"]
    ll     = dd["level1_3"]["level2_1"]["level3_1"]
    assert ll == ll_hkl
    os.remove(filename)
Visits FunctionDef nodes in a tree.  Adds relevant data about them to symbols.
dataset/ETHPy150Open telegraphic/hickle/tests/test_hickle.py/test_dict_nested--crossover with--dataset/ETHPy150Open earwig/bitshift/bitshift/parser/python.py/_TreeWalker.visit_FunctionDef