def get_all_ips():
  nodes = file_io.read(constants.ALL_IPS_LOC)
  nodes = nodes.split('\n')
  return filter(None, nodes)
return new instance of network from previous network
dataset/ETHPy150Open AppScale/appscale/lib/appscale_info.py/get_all_ips--crossover with--dataset/ETHPy150Open NVIDIA/DIGITS/digits/frameworks/framework.py/Framework.get_network_from_previous