PyQt5多執行緒

多執行緒一般有兩種辦法：

繼承qthread

繼承qobject並使用movetothread（官方推薦）

self.test_thread2.quit()

self.test_thread2.wait()

效果圖：

原始碼：

import time

from pyqt5.qtcore import qobject, pyqtsignal, qthread
class testworker1(qthread):
_signal = pyqtsignal(int)
def __init__(self):
super(testworker1, self).__init__()
def run(self):
for i in range(101):
print(i)
self._signal.emit(i)
time.sleep(0.01)
class testworker2(qobject):
_signal = pyqtsignal(int)
finished = pyqtsignal()
def __init__(self):
super(testworker2, self).__init__()
def run(self):
for i in range(101):
print(i)
self._signal.emit(i)
time.sleep(0.01)
self.finished.emit()
class threaddialog(qdialog):
def __init__(self):
super(threaddialog, self).__init__()
self.grid_layout = qgridlayout(self)
self.progress = qprogressbar(self)
self.grid_layout.addwidget(self.progress, 0, 0, 1, 2)
self.pushbutton1 = qpushbutton('繼承執行緒', self)
self.grid_layout.addwidget(self.pushbutton1, 1, 0, 1, 1)
self.pushbutton2 = qpushbutton('movetothread', self)
self.grid_layout.addwidget(self.pushbutton2, 1, 1, 1, 1)
self.pushbutton1.clicked.connect(self.pushbutton1_clicked)
self.pushbutton2.clicked.connect(self.pushbutton2_clicked)
def pushbutton1_clicked(self):
self.test_worker1 = testworker1()
self.test_worker1._signal.connect(self.progress.setvalue)
self.test_worker1.start()
def pushbutton2_clicked(self):
self.test_worker2 = testworker2()
self.test_thread2 = qthread()
self.test_worker2.movetothread(self.test_thread2)
self.test_worker2._signal.connect(self.progress.setvalue)
self.test_worker2.finished.connect(self.test_worker2_finished)
self.test_thread2.started.connect(self.test_worker2.run)
self.test_thread2.start()
def test_worker2_finished(self):
self.test_thread2.quit()
self.test_thread2.wait()
if __name__ == '__main__':
import sys
thread_dialog = threaddialog()
thread_dialog.show()

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