code: def main():
      """a tool used to convert caffe model to fluid"""
  
      import sys
      import os
  
      filename = os.path.splitext(os.path.basename(sys.argv[0]))[0]
      if len(sys.argv) < 3:
          print("usage:")
          print(
              "	python %s %s.npy [save_dir] [layer names seperated by comma]"
              % (sys.argv[0], filename)
          )
          print(
              "	eg: python %s %s.npy ./fluid" % (sys.argv[0], filename)
          )
          print(
              "	eg: python %s %s.npy ./fluid layer_name1,layer_name2"
              % (sys.argv[0], filename)
          )
          return 1
  
      npy_weight = sys.argv[1]
      fluid_model = sys.argv[2]
      outputs = None
      if len(sys.argv) >= 4:
          outputs = sys.argv[3].split(",")
  
      ret = LeNet.convert(npy_weight, fluid_model, outputs)
      if ret == 0:
          outputs = "last output layer" if outputs is None else outputs
          print(
              "succeed to convert to fluid format with output layers[%s]"
              " in directory[%s]" % (outputs, fluid_model)
          )
      else:
          print("failed to convert model to fluid format")
  
      return ret
  
imports: from __future__ import print_function
  from builtins import str
  from past.builtins import basestring
  from builtins import object
  import sys
  import os
  import math
  import numpy
label_desc: Use image node_id 3 for calling a global function with example usage: main() and returns: ret, int