Python抓取上位机软件数据的方法可根据不同场景来选择。 ### 串口通信场景 当下位机（如单片机）通过串口向上位机发送数据时，可使用Python的`serial`库来实现数据抓取。以下是一个示例代码： ```python import serial # 配置串口参数 ser = serial.Serial('COM3', 9600, timeout=1) # 根据实际情况修改串口号和波特率 try: while True: if ser.in_waiting: data = ser.readline().decode('utf-8').strip() print(f"接收到的数据: {data}") except KeyboardInterrupt: ser.close() ``` 此代码利用`serial.Serial`打开串口，然后不断检查串口是否有数据传入，若有则读取数据并进行解码打印。在实际使用中，需根据下位机和串口的实际情况调整串口号和波特率等参数 [^2]。 ### 开发串口调试工具场景 若要开发上位机软件来抓取数据，可使用`PyQt`和`pySerial`库。`PyQt`用于创建GUI界面，`pySerial`用于串口通信。以下是一个简单示例： ```python import sys import serial from PyQt5.QtWidgets import QApplication, QWidget, QVBoxLayout, QTextEdit class SerialMonitor(QWidget): def __init__(self): super().__init__() self.ser = serial.Serial('COM3', 9600, timeout=1) # 根据实际情况修改串口号和波特率 self.initUI() def initUI(self): layout = QVBoxLayout() self.text_edit = QTextEdit() layout.addWidget(self.text_edit) self.setLayout(layout) self.setWindowTitle('Serial Monitor') self.setGeometry(300, 300, 400, 300) 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