code: def add_suffix(p, s):
      """Stich suffix and prefix"""
      s = "." + str(s) if s is not None else ""
      return str(p) + str(s)
  
imports: from __future__ import print_function
  import argparse
  import os
  import random
  import sys
  import numpy
  import tensorflow
  from nlp_architect.utils import io
  from .None import inference
  from .None import train
  from .gnmt.utils import misc_utils, vocab_utils, evaluation_utils
label_desc: Use image node_id 4 for calling a global function with example usage: add_suffix(p, s) and returns: unknown