用python获取串行响应数据

我一直在用这段代码在我的树莓皮上用python发送一条短信。

How to Send/Receive SMS using AT commands?

import time
import serial

recipient = "+1234567890"
message = "Hello, World!"

phone = serial.Serial("/dev/ttyUSB3",  460800, timeout=5)
    try:
        time.sleep(0.5)
        phone.write(b'ATZ\r')
        time.sleep(0.5)
        phone.write(b'AT+CMGF=1\r')
        time.sleep(0.5)
        phone.write(b'AT+CMGS="' + recipient.encode() + b'"\r')
        time.sleep(0.5)
        phone.write(message.encode() + b"\r")
        time.sleep(0.5)
        phone.write(bytes([26]))
        time.sleep(0.5)
    finally:
        phone.close()

脚本运行时没有错误,但没有文本消息到达。我已经在minicom shell中直接运行at命令,文本消息确实成功发送。

当命令发送到调制解调器时,是否有任何python脚本打印方法来筛选来自调制解调器的响应?例如,如果我发送atz,我就可以打印“ok”。