code: def read_sampling_params_from_config(cp, section_group=None,
                                       section='sampling_params'):
      
      if section_group is not None:
          section_prefix = '{}_'.format(section_group)
      else:
          section_prefix = ''
      section = section_prefix + section
      replaced_params = set()
      sampling_params = set()
      for args in cp.options(section):
          map_args = cp.get(section, args)
          sampling_params.update(set(map(str.strip, map_args.split(','))))
          replaced_params.update(set(map(str.strip, args.split(','))))
      return list(sampling_params), list(replaced_params)
docs: Reads sampling parameters from the given config file.
  
      Parameters are read from the `[({section_group}_){section}]` section.
      The options should list the variable args to transform; the parameters they
      point to should list the parameters they are to be transformed to for
      sampling. If a multiple parameters are transformed together, they should
      be comma separated. Example:
  
      .. code-block:: ini
  
          [sampling_params]
          mass1, mass2 = mchirp, logitq
          spin1_a = logitspin1_a
  
      Note that only the final sampling parameters should be listed, even if
      multiple intermediate transforms are needed. (In the above example, a
      transform is needed to go from mass1, mass2 to mchirp, q, then another one
      needed to go from q to logitq.) These transforms should be specified
      in separate sections; see ``transforms.read_transforms_from_config`` for
      details.
  
      Parameters
      ----------
      cp : WorkflowConfigParser
          An open config parser to read from.
      section_group : str, optional
          Append `{section_group}_` to the section name. Default is None.
      section : str, optional
          The name of the section. Default is 'sampling_params'.
  
      Returns
      -------
      sampling_params : list
          The list of sampling parameters to use instead.
      replaced_params : list
          The list of variable args to replace in the sampler.