树莓派Can’t connect to pigpio at localhost(8888)

树莓派pigpio报Can’t connect to pigpio at localhost(8888)

Can't connect to pigpio at localhost(8888)

Did you start the pigpio daemon? E.g. sudo pigpiod

Did you specify the correct Pi host/port in the environment
variables PIGPIO_ADDR/PIGPIO_PORT?
E.g. export PIGPIO_ADDR=soft, export PIGPIO_PORT=8888

Did you specify the correct Pi host/port in the
pigpio.pi() function? E.g. pigpio.pi('soft', 8888)

解决方法：

一：文件中调用os库

import pigpio
import time
import os
open_io="sudo pigpiod"
os.system(open_io)
time.sleep(1)
pi = pigpio.pi()  # 初始化 pigpio库`

二：在LX终端手动开启

输入命令 sudo pigpiod 启动pigpio daemon

sudo pigpiod