from PyQt5.QtCore import QThread , pyqtSignal, QDateTime , QObject
from PyQt5.QtWidgets import QApplication, QDialog, QLineEdit
import time
import sys
 
class BackendThread(QObject):
 # 通過類成員對象定義信號
 update_date = pyqtSignal(str)
 
 # 處理業(yè)務邏輯
 def run(self):
  while True:
   data = QDateTime.currentDateTime()
   currTime = data.toString("yyyy-MM-dd hh:mm:ss")
   self.update_date.emit( str(currTime) )
   time.sleep(1)
 
class Window(QDialog):
 def __init__(self):
  QDialog.__init__(self)
  self.setWindowTitle('PyQt 5界面實時更新例子')
  self.resize(400, 100)
  self.input = QLineEdit(self)
  self.input.resize(400, 100)
  self.initUI()
 
 def initUI(self):
  # 創(chuàng)建線程
  self.backend = BackendThread()
  # 連接信號
  self.backend.update_date.connect(self.handleDisplay)
  self.thread = QThread()
  self.backend.moveToThread(self.thread)
  # 開始線程
  self.thread.started.connect(self.backend.run)
  self.thread.start()
 
 # 將當前時間輸出到文本框
 def handleDisplay(self, data):
  self.input.setText(data)
 
if __name__ == '__main__':
 app = QApplication(sys.argv)
 win = Window()
 win.show() 
 sys.exit(app.exec_())

from time import sleep

from selenium import webdriver

driver= webdriver.Chrome() # 需要 下載 對應瀏覽器 驅(qū)動到 python 安裝目錄
driver.get("https://blog.csdn.net/qq_27061049/article/details/90577597") # 刷新網(wǎng)址

for i in range(10000): # 刷新次數(shù)
 driver.refresh() # 刷新網(wǎng)頁
 sleep(5) # 五秒一次

# -*- coding: utf-8 -*-

import sys

from PyQt5.QtWebEngineWidgets import QWebEngineView
from PyQt5.QtCore import *
from PyQt5.QtWidgets import *


class WebView(QWebEngineView):
 def __init__(self):
  super(WebView, self).__init__()
  url = 'https://blog.csdn.net/qq_27061049/article/details/89711766' # 自定義刷新的網(wǎng)頁
  self.load(QUrl(url))
  self.showMinimized() #窗口最小化
  self.show()
  self.thread = Worker() # 創(chuàng)建線程實例
  self.thread.sinOut.connect(self.reloadWeb) # 信號綁定槽函數(shù)
  self.thread.start() # 開啟線程

 def reloadWeb(self):
  self.reload() #刷新網(wǎng)頁

class Worker(QThread):
 sinOut = pyqtSignal() # 創(chuàng)建新的信號，并且有參數(shù)
 num = 0
 def __init__(self, parent=None): # 構(gòu)造方法 創(chuàng)建號對象之后，會自動調(diào)用
  super(Worker, self).__init__(parent)


 def __del__(self): # 析構(gòu)函數(shù) 再對象被刪除 和 回收的時候調(diào)用
  self.wait()

 def run(self):
  for i in range(1000):
   # 發(fā)出信號
   self.sinOut.emit() # 給信號傳參字符串，并發(fā)送
   # 線程休眠66秒
   self.sleep(66)
   Worker.num = Worker.num + 1
   print (str(Worker.num) + " 次刷新")

if __name__ == '__main__':
 app = QApplication(sys.argv)
 web = WebView()
 print('### exec succeed !')
 sys.exit(app.exec_())