问创建Arduino()对象后，PyFirmata没有响应

EN

from pyfirmata import Arduino
import time

arduino = Arduino("COM3")
num = int(input("How many times should the LED blink?"))
sleep_time = float(input("Time (seconds) between each blink (decimal values are allowed): "))
print(f"Blinking {num} times with a {sleep_time} second delay")

for temp in range(num):
    arduino.digital[13].write(1)
    time.sleep(sleep_time)  # Seconds
    arduino.digital[13].write(0)
    time.sleep(sleep_time)