import time
time.sleep(0.1) # Wait for USB to become ready
from machine import Pin

pulsador=Pin(2,Pin.IN)
i=0
while True:
    a=pulsador.value()
    if a==1:
        time.sleep(0.2)
        if i==1:
            i=0
            print(i)
        elif i==0:
            i=1
            print(i)