from machine import Pin
import time

btnPush = Pin(16, Pin.IN, Pin.PULL_UP)

while True:
  if btnPush.value() == 0:
    print("Value from push button: {0}".format(btnPush.value()))
  else:
    print("Value from push button: {0}".format(btnPush.value()))
  time.sleep(0.25)