川小胖學(xué)python

 1 import sys,time
 2 from PyQt5.QtWidgets import QApplication, QWidget, QProgressBar, QPushButton,QVBoxLayout
 3 from PyQt5.QtCore import Qt
 4 
 5 
 6 class Mywin(QWidget):
 7     def __init__(self):
 8         super().__init__()
 9         self.setWindowTitle('進(jìn)度條')
10         self.step = 0 #初始值設(shè)置為0
11         self.initUI()
12 
13     def initUI(self):
14         self.pbar = QProgressBar()
15 
16         self.pbar.setInvertedAppearance(False)   #進(jìn)度條走向
17         self.pbar.setOrientation(Qt.Horizontal)   #進(jìn)度條的方向
18         self.btn = QPushButton('開始', self)
19 
20         self.v_layout = QVBoxLayout()
21         self.v_layout.addWidget(self.pbar)
22         self.v_layout.addWidget(self.btn)
23         self.setLayout(self.v_layout)
24 
25         self.btn.clicked.connect(self.action)
26 
27     def action(self):
28         self.pbar.setMinimum(0)
29         self.pbar.setMaximum(0)
30         while self.step < 1000:
31             self.pbar.setValue(self.step)
32             self.step += 1
33             time.sleep(0.001)
34         else:
35             self.step = 0
36             print('done')
37             self.pbar.setValue(self.step)
38 
39 
40 if __name__ == '__main__':
41      app = QApplication(sys.argv)
42      mywin = Mywin()
43      mywin.show()
44      sys.exit(app.exec_())