title: Have textbox update every 5 seconds PyQt
body: <p>So here is my problem, I have data from a serial cable being read every 5 seconds and being stored on a CSV file. I am also taking that data and making it into a list. What I would like to do is take variables 5, 7, and 9 and have them be displayed in my GUI where I have Qtextboxes... how do I do that? </p>
  
  <p>The list of variables will be in a value known as listvalues. I want to call 5, 7, and 9 and have them display in their respective text boxes in my PyQt window.</p>
  
  <p>here is my code:</p>
  
  <pre><code>from PyQt4 import QtGui
  import sys
  import masimo
  import csv
  import time
  import datetime as DT
  import threading
  from threading import Thread
  import serial
  import os
  
  os.chdir(r"C:\Users\SpO2\Desktop\Data")
  time = time.strftime("%d %b %Y %H%M%S")
  location = r'%s.csv' % time
  outputfile = open(location, mode='x', newline='')
  outputWriter = csv.writer(outputfile)
  outputWriter.writerow(["start"])
  outputfile.close()
  port = "COM4"
  
  
  class ExampleApp(QtGui.QMainWindow, masimo.Ui_MainWindow):
      def __init__(self, parent=None):
          super(self.__class__, self).__init__()
          self.setupUi(self)
  
  def SerialRead():
      delay1 = DT.datetime.now()                
      ser = serial.Serial(port, baudrate=9600, parity=serial.PARITY_NONE, stopbits=serial.STOPBITS_ONE, bytesize=serial.EIGHTBITS)   
      out = ser.read(167)
      reading = str(out)
      plaintext1 = reading.replace(' ', ', ')
      plaintext = plaintext1.replace('=', ', ')
      listvalue = plaintext.split(", ")
      ser.close()
  
      outputfile = open(location, mode='a', newline='')
      outputWriter = csv.writer(outputfile)
      outputWriter.writerow([plaintext])
      outputfile.close()
  
      delay2 = DT.datetime.now()
      differencetime = (delay2 - delay1).total_seconds()
      writedelay = int(5)
      restart = (writedelay - differencetime)
      threading.Timer(restart, SerialRead).start() 
  
  def main():
      app = QtGui.QApplication(sys.argv)
      form = ExampleApp()
      QtGui.QApplication.processEvents()
      form.show()
      app.exec_()    
  
  if __name__ == '__main__':
      Thread(target = SerialRead).start()
      Thread(target = main).start()
  </code></pre>