python script to manipulate LED with Raspberry Pi 2 + Switch Tactile

switch.py

import RPi.GPIO as GPIO

GPIO.setmode(GPIO.BCM)
GPIO.setwarnings(False)
GPIO.setup(26, GPIO.IN, pull_up_down=GPIO.PUD_DOWN)   # predefined GPIO 26 a.k.a pin #37
GPIO.setup(4, GPIO.OUT, initial=GPIO.LOW)             # predefined GPIO 4 a.k.a pin #7

while True:                                           # loop forever, terminate script by ctrl + c
  switchPress = GPIO.input(26)                        # listen to GPIO 26
  
  if switchPress:                                     # if switch button pressed
    GPIO.output(4, GPIO.HIGH)                         # set GPIO 4 to high, LED turn on
  if switchPress == False:                            # if switch button released
    GPIO.output(4, GPIO.LOW)                          # send LOW to GPIO 4
    
GPIO.cleanup()