code: def count_samples(ns_run, **kwargs):
      r
      kwargs.pop('logw', None)
      kwargs.pop('simulate', None)
      if kwargs:
          raise TypeError('Unexpected **kwargs: {0}'.format(kwargs))
      return ns_run['logl'].shape[0]
docs: r"""Number of samples in run.
  
      Unlike most estimators this does not require log weights, but for
      convenience will not throw an error if they are specified.
  
      Parameters
      ----------
      ns_run: dict
          Nested sampling run dict (see the data_processing module
          docstring for more details).
  
      Returns
      -------
      int