code: def get_op_arg_valf(op, arg_name, default_val):
      arg = get_op_arg(op, arg_name)
      return arg.f if arg is not None else default_val
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  from __future__ import unicode_literals
  from functools import wraps
  import copy
  import numpy
  from caffe2.python import core, workspace
  from caffe2.proto import caffe2_pb2
label_desc: Use image node_id 7 for calling a global function with example usage: get_op_arg_valf(op, arg_name, default_val) and returns: unknown