顯示一個視窗提示框，我們可以為任何部件新增一個氣泡狀的幫助資訊。

#!/usr/bin/python3
# -*- coding: utf-8 -*-

import sys
from PyQt5.QtWidgets import (QWidget, QToolTip, QPushButton, QApplication)
from PyQt5.QtGui import QFont, QIcon


class Example(QWidget):
    
    def __init__(self):
        super().__init__()
        
        self.initUI()
        
        
    def initUI(self):
        
        QToolTip.setFont(QFont('SansSerif', 10))
        
        self.setToolTip('This is a <b>QWidget</b> widget')
        
        btn = QPushButton('Button', self)
        btn.setToolTip('This is a <b>QPushButton</b> widget')
        btn.resize(btn.sizeHint())
        btn.move(50, 50)       
        
        self.setGeometry(300, 300, 300, 200)
        self.setWindowTitle('Tooltips') 
        self.setWindowIcon( QIcon('web.png') )
        self.show()
        
        
if __name__ == '__main__':
    
    app = QApplication(sys.argv)
    ex = Example()
    sys.exit(app.exec_())
 

QToolTip.setFont(QFont('SansSerif', 10) )

self.setToolTip('This is a <b>QWidget</b> widget')

btn = QPushButton('Button', self)
btn.setToolTip('This is a <b>QPushButton</b> widget')
 

btn.resize(btn.sizeHint())
btn.move(50, 50)

。