new_contents: from __future__ import division
  import pytest
  import popmodel as pm
  from pkg_resources import resource_filename
  
  @pytest.fixture(scope='session')
  def hpar():
      hpath = resource_filename('popmodel', 'data/hitran_sample.par')
      return pm.loadhitran.processhitran(hpath)
  
subject: add conftest.py to tests