树梅派－控制蜂鸣器鸣响脚本(python)

import RPi.GPIO as GPIO
from gpiozero import Buzzer
import time

def init():
    GPIO.setwarnings(False)
    GPIO.setmode(GPIO.BCM)
    GPIO.setup(17,GPIO.IN)
    GPIO.setup(25,GPIO.OUT)
    pass

def beep():
    #beep(on_time=1,off_time=1,n=None,background=Ture) 
    bz=Buzzer(25)   
    bz.beep(0.1,0.1,1,False)
    #GPIO.output(25,GPIO.HIGH)
    #time.sleep(.3)
    #GPIO.output(25,GPIO.LOW)
    
def detct():
    for i in range(1,101):
    #while True:
        if GPIO.input(17)==True:
            print "ok"
            beep()
            time.sleep(2.5) 
        else:
            print("no") 
            time.sleep(2)
time.sleep(1)
init()
beep()
detct()
GPIO.cleanup()