Class DyadCensus

object --+    
         |    
     tuple --+
             |
            DyadCensus

Dyad census of a graph.

This is a pretty simple class - basically it is a tuple, but it allows the user to refer to its individual items by the names mutual (or mut), asymmetric (or asy or asym or asymm) and null.

Examples:

>>> g=Graph.Erdos_Renyi(100, 0.2, directed=True)
>>> dc=g.dyad_census()
>>> print dc.mutual
179
>>> print dc["asym"]
1609
>>> print tuple(dc), list(dc)
(179, 1609, 3162) [179, 1609, 3162]
>>> print dc.as_dict()
{"mutual": 179, "asymmetric": 1609, "null": 3162}