__calc_sum__ ( self )

__delitem__ ( self,  a )

__init__ ( self,  data=None )

__repr__ ( self )

__setitem__ (
        self,
        a,
        b,
        )

clear ( self )

cmp_prob_val (
        self,
        a,
        b,
        )

get (
        self,
        key,
        failobj=0,
        )

renorm_to ( self,  sum )

setdefault (
        self,
        key,
        failobj=0,
        )

update ( self,  dict )