Connecting LED with Raspberry pi 4

import RPi.GPIO as GPIO  # Import Raspberry Pi GPIO library
from time import sleep  # Import sleep function from time module
GPIO.setmode(GPIO.BCM)  # Use BCM numbering
GPIO.setwarnings(False)  # Ingnore all GPIO warnings 
GPIO.setup(23,GPIO.OUT)  # Set GPIO 23 to be an output pin

while True: # Infinity loop
  print "LED is on"  # Display LED is ON on the screen
  GPIO.output(23,GPIO.HIGH)  # Turn on voltage
  sleep(2)  # Delay for 2secs
  print "LED is off"  # Display LED is OFF on the screen
  GPIO.output(23,GPIO.LOW) # Turn off voltage
  sleep(2)  # Delay for 2secs