code: def __init__(self, mode, config):
      self.create_model()
      self.create_trainer(mode, config)
  
imports: import argparse
  import collections
  import os
  import pickle
  import pytest
  import re
  import signal
  import subprocess
  import sys
  import time
  import numpy
  import cntk
label_desc: Use image node_id 1 to create a new SimpleTrainer object  with example: obj = SimpleTrainer(mode, config)