import sys
from PyQt5.QtWidgets import QApplication, QMainWindow
from PyQt5.QtGui import QPixmap
import SerialCommunication  # module SerialCommunication.py# myPyMainForm  # 主窗口对象
# labIndicator  # label控件对象# 以下是代码片段# 获取“串口指示灯亮”图片文件路径imgLedOff = os.path.join(os.getcwd() + "\\images\\light_off.png")# 获取“串口指示灯灭”图片文件路径imgLedOn = os.path.join(os.getcwd() + "\\images\\light_on.png")# 利用label显示图片，串口指示灯亮icoLedOn = QPixmap(SerialCommunication.imgLedOn)myPyMainForm.labIndicator.setPixmap(icoLedOn)myPyMainForm.labIndicator.setScaledContents(True)# 利用label显示图片，串口指示灯灭icoLedOff = QPixmap(SerialCommunication.imgLedOff)myPyMainForm.labIndicator.setPixmap(icoLedOff)myPyMainForm.labIndicator.setScaledContents(True)