def _lpad(self, length, pad=' '):
    return _ops.LPad(self, length, pad).to_expr()
:returns: JSONized Cluster attributes.
dataset/ETHPy150Open cloudera/ibis/ibis/expr/api.py/_lpad--crossover with--dataset/ETHPy150Open openstack/fuel-web/nailgun/nailgun/api/v1/handlers/cluster.py/ClusterAttributesHandler.GET