Update server.py

server.py

@@ -8,8 +8,10 @@
 from flask import Flask, render_template, request
 from stockTicker import StockTicker
 from werkzeug.utils import secure_filename
-import os
+import sys, os, base64, hashlib, hmac, select
-import datetime
+import pytz
+from datetime import datetime, timedelta
+import datetime as dt
 import threading
 import csv
 import pexpect