输出闹钟到覆盆子派的蜂鸣器

Question

我希望在输入时间到达时间时从蜂鸣器输出声音。但如果你在终端上运行它，你就不会听到蜂鸣器发出任何声音。看起来好像无限循环正在＆＃39;终端上运行。 这是我实施的编码。

import time
import datetime
from grovepi import*
import math

buzzer_pin =2
button=4

pinMode(buzzer_pin,"OUTPUT")

pinMode(button,"INPUT")

c=int(input("Enter the hour you want to wake up at :"))
d=int(input("Enter the minutes you want to wake up at :"))
b=int(input("Enter the seconds you want to wake up at :"))

now= datetime.datetime.now()

while True :
    try :
        h=now.strftime('%H')
        h1=now.strftime('%M')
        h2=now.strftime('%S')
        if h==c and h1==d and h2>=b :
            digitalWrite(buzzer_pin,1)
        button_status = digitalRead(button)
        if button_status :  
            digitalWrite(buzzer_pin,0)
    except KeyboardInterrupt:
        digitalWrite(buzzer_pin,0)
        break
    except (IOError,TypeError) as e:
        print("Error")

请让我知道这个问题。如果您还可以告诉我应该修复哪部分代码，我将不胜感激。