from machine import Pin
from utime import sleep

button = Pin(25, Pin.IN)
leds = [Pin(23, Pin.OUT), Pin(22, Pin.OUT), Pin(21, Pin.OUT), 
    Pin(19, Pin.OUT), Pin(18, Pin.OUT), Pin(5, Pin.OUT), 
    Pin(17, Pin.OUT), Pin(16, Pin.OUT), Pin(4, Pin.OUT),
    Pin(2, Pin.OUT),Pin(0, Pin.OUT),Pin(13, Pin.OUT),
    Pin(14, Pin.OUT),Pin(27, Pin.OUT),Pin(26, Pin.OUT)]
while True:
    if button.value():
        for led in leds:
            led.value(1)
    else:
        for led in leds:
            led.value(0)