python + pyqt5制作一个串口助手

def open_port(port_name, baudrate, bytesize, stop_bit, parity):
    ser = serial.Serial(
        port = port_name,
        baudrate=baudrate,
        bytesize=bytesize,
        stopbits=stop_bit,
        parity=parity,
        rtscts=False,
        xonxoff=False,
        timeout=None,
        write_timeout=None
    )
    return ser

    def close_port(self):
        if self.current_port is not None:
            self.time.stop()
            self.serial_thread.ser = None
 
            self.current_port.close()
 
            self.current_port = None
 
            self.ui.port_status.setText("closed")
            self.ui.open_port.setDisabled(False)
            self.ui.send_data.setDisabled(True)
            self.ui.close_port.setDisabled(True)

import serial
import serial.tools.list_ports
 
def serial_port():
    port_list = []
    portlist  = list(serial.tools.list_ports.comports())
    for port in portlist:
        port_list.append(port.device)
    return port_list

    def send_data(self):
        if self.ui.send_select.isChecked():
            timer = self.ui.send_time.value()
            self.time.start(timer)
        else:
            self.time.stop()
        data = self.ui.input_data.toPlainText()
        print("这是发送的数据:"+data)
        self.current_port.write(data.encode('gbk'))

class SerialThread(QThread):
    data_arrive_signal = pyqtSignal()
 
    def __init__(self, ser=None):
        super().__init__()
        self.ser = ser
        self.data = ''
 
    def run(self):
        while True:
            if self.ser and self.ser.in_waiting:
                self.data += self.ser.read_all().decode('gbk')
                print(self.data)
                self.data_arrive_signal.emit()

    def show_data(self):
        self.recive_data = self.serial_thread.data
        self.zdhh_data += self.recive_data
        now_time = datetime.datetime.now()
 
        if self.ui.zdhh.isChecked():
            self.zdhh_data += '\n'
            self.ui.show_ser_data.setText(self.zdhh_data)
            print("这里是显示的数据:"+self.zdhh_data)
 
        if self.ui.show_time.isChecked():
            print(self.ui.show_time.isChecked())
            time_data = str(now_time) + self.zdhh_data
            print(time_data)
            self.ui.show_ser_data.setText(time_data)
 
        if self.ui.zdhh.isChecked() and self.ui.show_time.isChecked():
            self.zdhh_data += '\n'
            time_data = str(now_time) + self.zdhh_data
            self.ui.show_ser_data.setText(time_data)
        else:
            self.ui.show_ser_data.setText(self.recive_data)
            print("这里是显示的数据:"+self.recive_data)