Pyserial Issues with Python3.7 and Fluke Multimeter

[jfisher930]

Hello All,
I am having issues running a very simple code to a Fluke 8846A Multimeter.

very curious as to what is wrong with such a simple code.

Any help would be much appreciated

import serial
import time

ser = serial.Serial()
ser.baudrate = 9600
ser.bytesize = 8
ser.stopbits = 1
ser.xonxoff = 0
ser.rtscts = 0
ser.timeout = None
ser.port = "COM4"  
parity=serial.PARITY_NONE

ser.open()
print ("Connection to Fluke successful")
ser.write('SENS:VOLT:RANG 10 \r\n')
time.sleep(2)
print(ser.readline(10))
ser.close()
print ("Connection Severed")