def add_cell_to_compute_node(compute_node, cell_name):
 compute_proxy = ComputeNodeProxy(compute_node, cell_name)
 return compute_proxy

def add_cell_to_compute_node ( compute_node , cell_name ) : compute_proxy = ComputeNodeProxy ( compute_node , cell_name ) return compute_proxy
fix compute_node attributes that should be unique .