code: def lookup_table_gather(index, input):
      """
      lookup table support for paddle by gather.
      :param index:
      :param input:
      :return:
      """
      return fluid.layers.gather(
          index=index, input=input, overwrite=False
      )
  
imports: import paddle.fluid
  from paddle.fluid.layer_helper import LayerHelper
label_desc: Use image node_id 2 for calling a global function with example usage: lookup_table_gather(index, input) and returns: fluid