多线程+QProgressBar实现进度条：

1 import threading 2  3 from PyQt5.Qt import * #刚开始学习可以这样一下导入 4 import sys,time 5  6 rate = 0 7 class MyProcessBar(QProgressBar): 8     def __init__(self): 9         super().__init__()10         self.setWindowTitle("test的学习")11         self.resize(300,30)12         self.set_ui()13 14     def set_ui(self):15         timer = QTimer(self)16         timer.start(100)17         timer.timeout.connect(self.timer_timeout_slot)18 19     def timer_timeout_slot(self):20         self.setValue(rate+1)21 22 def create_ui_show():23     app =QApplication(sys.argv)24     processBar = MyProcessBar()25     processBar.show()26     sys.exit(app.exec_())27 28 if __name__ == '__main__':29     thread1 = threading.Thread(target=create_ui_show)30     thread1.start()31 32     for i in range(100):33         time.sleep(0.05)34         rate = i35     if i == 99:36         print("下载完成")

 

多进程+QProgressBar实现进度条：

1 import multiprocessing 2  3 from PyQt5.Qt import * #刚开始学习可以这样一下导入 4 import sys,time 5  6 def create_ui_show(rate): 7     app  = QApplication(sys.argv) 8     progressBar = QProgressBar() 9 10     timer = QTimer()11     def test():12         progressBar.setValue(rate.value+1)13         if rate.value == 99:14             sys.exit(0)15     timer.timeout.connect(test)16     timer.start(100)17 18     progressBar.show()19     sys.exit(app.exec_())20 21 if __name__ == '__main__':22     rate = multiprocessing.Value("d",0)  #初始的rate.value = 023 24     process1 = multiprocessing.Process(target=create_ui_show,args=(rate,))25     process1.start()26 27     for i in range(100):28         time.sleep(0.1)29         rate.value = i