https://shumeipai.nxez.com/
https://projects.raspberrypi.org/en/pathways/getting-started-with-raspberry-pi
gpiozero库：https://gpiozero.readthedocs.io/en/stable/
from gpiozero import LED
from time import sleep
led=LED(25)
while True:
led.on()
sleep(1)
led.off()
sleep(1)