code: def test_logpmf_zero(self):
      poisson_logpmf = poisson.logpmf(5, 1)
      zipoisson_logpmf = zipoisson.logpmf(5, 1, 0)
      assert_allclose(poisson_logpmf, zipoisson_logpmf, rtol=1e-12)
  
imports: import numpy
  from numpy.testing import assert_allclose, assert_equal
  from scipy import stats
  from scipy.stats import poisson, nbinom
  from statsmodels.tools.tools import Bunch
  from statsmodels.distributions.discrete import genpoisson_p, truncatedpoisson, truncatednegbin, zipoisson, zinegbin, zigenpoisson, DiscretizedCount, DiscretizedModel
label_desc: Use image node_id 2 for calling the TestZIPoisson obj's underlying member method code with example usage: obj.test_logpmf_zero() without return types