def pcoa(lines):
 dist_mtx = DistanceMatrix.read(lines)
 pcoa_obj = PCoA(dist_mtx)
 return pcoa_obj.scores()

def pcoa ( lines ) : dist_mtx = DistanceMatrix . read ( lines ) pcoa_obj = PCoA ( dist_mtx ) return pcoa_obj . scores ( )
run pcoa on the distance matrix present on lines .