def child_count(self, only_direct=True):
        if not only_direct:
            return iter_utils.count(self.dfs_iter())
        return len(self._children)
read svm sparse format from file 'fname' (with labels only)
dataset/ETHPy150Open openstack/taskflow/taskflow/types/tree.py/Node.child_count--crossover with--dataset/ETHPy150Open pybrain/pybrain/pybrain/tools/svmdata.py/SVMData.loadRawData