pyQt5不让进度条卡住
主程序启动的时候检查是否有更新，用服务端最新版本号与程序中的版本号做对比。
如果有新版本的话，关闭自身，调起更新程序。
SRE实战 互联网时代守护先锋，助力企业售后服务体系运筹帷幄！一键直达领取阿里云限量特价优惠。更新程序下载跟新包到本地，覆盖本地文件完成更新。
# _*_ coding: utf-8 _*_ import os import sys import subprocess from PyQt5.QtCore import (QThread, pyqtSignal, QRect) from PyQt5.QtWidgets import (QApplication, QDesktopWidget, QProgressBar, QWidget, QLabel, QFrame, QPushButton) from PyQt5.QtGui import (QIcon, QPixmap) import requests import zipfile import json class dfThread(QThread): _signal = pyqtSignal(int, str, str) def __init__(self, download_url, filesize, fileobj, buffer): super().__init__() self.download_url = download_url self.filesize = filesize self.fileobj = fileobj self.buffer = buffer def run(self): try: f = requests.get(self.download_url, stream=True) offset = 0 for chunk in f.iter_content(chunk_size=self.buffer): if not chunk: break self.fileobj.seek(offset) self.fileobj.write(chunk) offset = offset + len(chunk) proess = offset / int(self.filesize) * 100 self._signal.emit(int(proess), str(offset), str(self.filesize)) self.fileobj.close() self.exit(0) except Exception as e: print(e) class zipFile(object): def __init__(self, filename, mode='r', basedir=''): self.filename = filename self.mode = mode if self.mode in ('w', 'a'): self.zfile = zipfile.ZipFile(filename, self.mode, compression=zipfile.ZIP_DEFLATED) else: self.zfile = zipfile.ZipFile(filename, self.mode) self.basedir = basedir if not self.basedir: self.basedir = os.path.dirname(filename) def close(self): self.zfile.close() def extract_to(self, path): for p in self.zfile.namelist(): self.extract(p, path) def extract(self, filename, path): if not filename.endswith('/'): f = os.path.join(path, filename) dir = os.path.dirname(f) if not os.path.exists(dir): os.makedirs(dir) try: open(f, 'wb').write(self.zfile.read(filename)) except IOError: pass class updateFrm(QWidget): def __init__(self): super().__init__() self.mainfn = 'QQ' #self.fileuri = 'http://a.b.cn/serv/update/%s.zip' % self.mainfn self.fileuri = 'https://dldir1.qq.com/qqfile/qq/PCQQ9.1.1/24953/QQ9.1.1.24953.exe' #self.servurl = 'http://a.b.cn/serv/version' self.baseTitle = 'QQ升级助手' self.initUI() def initUI(self): self.info = QLabel(self) self.info.move(65, 28) self.info.resize(360, 40) map = QLabel(self) map.move(30, 25) img = QPixmap('res\\info.png') map.setPixmap(img) self.tips = QLabel(self) self.tips.move(420, 55) self.tips.resize(30, 10) self.tips.hide() self.line = QFrame(self) self.line.setGeometry(QRect(0, 75, 500, 75)) self.line.setFrameShape(QFrame.HLine) self.line.setFrameShadow(QFrame.Sunken) self.line.setObjectName("line") self.btnQuit = QPushButton(self) self.btnQuit.setText("取消") self.btnQuit.setGeometry(380, 120, 100, 30) self.btnQuit.clicked.connect(self.cancel) self.btnQuit.hide() self.btnStart = QPushButton(self) self.btnStart.setText('立即更新') self.btnStart.setGeometry(380, 120, 100, 30) self.btnStart.clicked.connect(self.start) self.bar = QProgressBar(self) self.bar.setGeometry(0, 110, 530, 2) self.bar.setMaximum(100) self.bar.hide() self.setFixedSize(500, 160) self.center() self.setWindowTitle(self.baseTitle) icon = QIcon() icon.addPixmap(QPixmap("res\\6.ico"), QIcon.Normal, QIcon.Off) self.setWindowIcon(icon) try: #res = requests.get(self.servurl) #obj = json.loads(res.text) obj = { 'title': '发现新版本', 'desc' : 'PCQQ 9.1.1 全新改版，给你焕然一新的感觉' } txt = '%s\n\n%s' % (obj['title'], obj['desc']) except Exception as e: txt = '未发现新版本\n\n' self.btnStart.setDisabled(True) self.info.setText(txt) self.show() def center(self): qr = self.frameGeometry() cp = QDesktopWidget().availableGeometry().center() qr.moveCenter(cp) self.move(qr.topLeft()) def cancel(self): self.close() def start(self): self.btnStart.hide() self.bar.show() self.tips.show() self.line.hide() self.btnQuit.setEnabled(False) self.btnQuit.show() self.downloadfile() def downloadfile(self): self.bar.setValue(0) path = '%s.zip' % self.mainfn self.filesize = requests.get(self.fileuri, stream=True).headers['Content-Length'] self.fileobj = open(path, 'wb') self.dfThread = dfThread(self.fileuri, self.filesize, self.fileobj, buffer=10240) self.dfThread._signal.connect(self.progressinfo) self.dfThread.start() def progressinfo(self, per, f_size_dl, f_size): self.bar.setValue(per) self.tips.setText('%s%%' % str(per)) self.info.setText('升级过程中请勿退出\n\n正在下载.. %s/%s KB' % (str(f_size_dl), str(f_size))) if per == 100: self.info.setText('升级过程中请勿退出\n\n下载完成,正在安装..') self.unzip('%s.zip' % self.mainfn) self.tips.hide() self.info.setText('安装完成\n\n已升级到最新版本') self.btnQuit.setText('完成') self.btnQuit.setEnabled(True) def unzip(self, fname): z = zipFile(fname) z.extract_to('.') z.close() os.remove(fname) if __name__ == '__main__': app = QApplication(sys.argv) frm = updateFrm() #kill = subprocess.call(("taskkill /F /IM %s.exe" % frm.mainfn), shell=True) sys.exit(app.exec_())
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