Python 上 Qt 中的 QThread

Python 中的多线程编程

python
from PyQt5.QtCore import QThread
class MyThread(QThread):
    def run(self):
        # 线程的执行逻辑
        print("Thread is running")
# 创建线程实例
thread = MyThread()
# 启动线程
thread.start()

python
from PyQt5.QtCore import QThread, pyqtSignal, pyqtSlot
class MyThread(QThread):
    # 定义一个信号
    my_signal = pyqtSignal(str)
    def run(self):
        # 线程的执行逻辑
        message = "Hello from thread"
        # 发出信号
        self.my_signal.emit(message)
class MainWindow(QMainWindow):
    def __init__(self):
        super().__init__()
        self.initUI()
    def initUI(self):
        self.setWindowTitle("Thread Communication Example")
        # 创建线程实例
        thread = MyThread()
        # 连接信号和槽
        thread.my_signal.connect(self.on_thread_signal)
        # 启动线程
        thread.start()
    @pyqtSlot(str)
    def on_thread_signal(self, message):
        # 处理信号
        print(message)
# 创建应用程序实例
app = QApplication(sys.argv)
# 创建主窗口实例
window = MainWindow()
# 显示窗口
window.show()
# 运行应用程序
sys.exit(app.exec_())