def setField(self,name):
        f=self.getField(name)
        if f: return f
        return self.addChild(node=DataField(name))
Returns the difference between a and b, but only if a >= b.
dataset/ETHPy150Open CouchPotato/CouchPotatoServer/libs/xmpp/protocol.py/DataItem.setField--crossover with--dataset/ETHPy150Open seomoz/shovel/example/shovel/test/debug.py/difference