def METHOD_NAME():
    src = """
    T1 = (1, 2)
    T2 = ('a', 'b')
    T1 = T2
    """
    ast_mod, ti = cs._parse_text(src, reset=True)
    tf = find_type_fail(ast_mod).inf_type
    verify_typefail_unify(tf, "T1", "T2", exp_src_type=nodes.Assign, num_reasons=2)