'''
import os
-import ssl
import json
import sys
import uuid
import time
import copy
-import netifaces as ni
import warnings
import contextlib
import requests
import simplejson
import http.server
import threading
-import urllib3
from datetime import datetime
from datetime import timedelta
from simple_rest_client.api import API
from simple_rest_client.resource import Resource
from basicauth import encode
-from pprint import pprint
-from random import randint
from urllib3.exceptions import InsecureRequestWarning
from __future__ import print_function
-import keras
import os
from tensorflow.keras.datasets import mnist
from tensorflow.keras.models import Sequential
from tensorflow.keras.layers import Conv2D, MaxPooling2D
from tensorflow.keras.preprocessing.image import ImageDataGenerator
from tensorflow.keras import backend as K
-from tensorflow_estimator.python.estimator.export import export as export_helpers
-from tensorflow.python.saved_model import builder as saved_model_builder
-from tensorflow.python.saved_model import tag_constants, signature_constants
-from tensorflow.python.saved_model.signature_def_utils_impl import predict_signature_def
import tensorflow as tf
import horovod.tensorflow.keras as hvd