code: def test_verify_arg_names(self, data):
      with pytest.raises(ValueError):
          from_emcee(data.obj, arg_names=["not enough"])
  
imports: import os
  import numpy
  import pytest
  from ...None import from_emcee
  from ..helpers import _emcee_lnprior
  from ..helpers import _emcee_lnprob
  from ..helpers import chains, check_multiple_attrs, draws, eight_schools_params, importorskip, load_cached_models, needs_emcee3_func
label_desc: Use image node_id 6 for calling the TestDataEmcee obj's underlying member method code with example usage: obj.test_verify_arg_names(data) without return types