如何在python中终止qthread
我有一个GUI应用程序,它使用qwebview通过长循环实现web自动化过程,所以我使用QThread来完成这项工作,但我不能终止线程,我的代码如下如何在python中终止qthread,python,pyside,qthread,terminate,Python,Pyside,Qthread,Terminate,我有一个GUI应用程序,它使用qwebview通过长循环实现web自动化过程,所以我使用QThread来完成这项工作,但我不能终止线程,我的代码如下 class Main(QMainWindow): def btStart(self): self.mythread = BrowserThread() self.connect(self.mythread, SIGNAL('loop()'), self.campaign_loop, Qt.AutoConnec
class Main(QMainWindow):
def btStart(self):
self.mythread = BrowserThread()
self.connect(self.mythread, SIGNAL('loop()'), self.campaign_loop, Qt.AutoConnection)
self.mythread.start()
def btStop(self):
self.mythread.terminate()
def campaign_loop(self):
loop goes here
class BrowserThread(QThread):
def __init__(self):
QThread.__init__(self)
def run(self):
self.emit(SIGNAL('loop()'))
这段代码在启动线程时运行良好,但无法停止循环,浏览器仍在运行,即使我调用了关闭事件,它也会从GUI中消失。编辑:它也可以在linux上运行,我在raspberry pi 4上尝试了这一点,它运行良好 关键是在“run”方法中创建主循环,因为“terminate”函数在“run”中停止循环,而不是线程本身 这里有一个这样的工作示例,但不幸的是,它只在windows上工作
不鼓励使用self.terminate。看见
import sys
import time
from PySide.QtGui import *
from PySide.QtCore import *
class frmMain(QDialog):
def __init__(self):
QDialog.__init__(self)
self.btStart = QPushButton('Start')
self.btStop = QPushButton('Stop')
self.counter = QSpinBox()
self.layout = QVBoxLayout()
self.layout.addWidget(self.btStart)
self.layout.addWidget(self.btStop)
self.layout.addWidget(self.counter)
self.setLayout(self.layout)
self.btStart.clicked.connect(self.start_thread)
self.btStop.clicked.connect(self.stop_thread)
def stop_thread(self):
self.th.stop()
def loopfunction(self, x):
self.counter.setValue(x)
def start_thread(self):
self.th = thread(2)
#self.connect(self.th, SIGNAL('loop()'), lambda x=2: self.loopfunction(x), Qt.AutoConnection)
self.th.loop.connect(self.loopfunction)
self.th.setTerminationEnabled(True)
self.th.start()
class thread(QThread):
loop = Signal(object)
def __init__(self, x):
QThread.__init__(self)
self.x = x
def run(self):
for i in range(100):
self.x = i
self.loop.emit(self.x)
time.sleep(0.5)
def stop(self):
self.terminate()
app = QApplication(sys.argv)
win = frmMain()
win.show()
sys.exit(app.exec_())