def _formatted_cluster_iterator(self):
    'Iterates over the clusters and formats them into a string to be\n        presented in the summary.'
    for cluster in self:
        (yield ', '.join((str(member) for member in cluster)))
Iterates over the clusters and formats them into a string to be
presented in the summary.
def _formatted_cluster_iterator(self):
    'Iterates over the clusters and formats them into a string to be\n        presented in the summary.'
    for cluster in self:
        (yield ', '.join((str(member) for member in cluster)))