python3GUI--疫情信息快速查看工具By:PyQt5（附源码）

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年关将至，大家对疫情的关注度也愈发提升，本次使用PyQt5撰写100行代码写一个疫情信息快速查看工具。

一．准备工作

1.PyQt5

PyQt 是一个用于创建GUI应用程序的跨平台的工具包，它将Python编程语言和Qt库 成功融合在一起。QT库目前是最强大的GUI库之一。
PyQt可以运行在所有主流操作系统上，包括UNIX，Windows和Mac OS 。

直接使用下面的命令安装即可：

pip install PyQt5

2.PyQtWebEngine

Qt WebEngine模块提供了一个web浏览器, 在不使用本地浏览器的情况下, 它可以很容易地把Web内容嵌入到Qt应用程序中.
Qt WebEngine为渲染HTML, XHTML和SVG文档, 使用CSS和JavaScript, 提供了C++类和QML类型

直接使用下面的命令安装即可：

pip install PyQtWebEngine

Qt WebEngine Widgets 模块

二．预览

1.启动

启动以后主窗口会自动加载最新的疫情信息，默认是百度的引擎。

2.引擎切换

通过在分组框选择引擎,实现对引擎的切换。

三．源代码

1.COVID19_viewer.py

import sys
import base64
from PyQt5.Qt import *
from PyQt5.QtWidgets import *
from main_window import Ui_MainWindow
from PyQt5.QtWebEngineWidgets import  QWebEngineView

class Covid19_viwer(QMainWindow):
    def __init__(self):
        super(Covid19_viwer, self).__init__()
        self.my_dict=eval(base64.decodebytes(b"""ezA6ICdodHRwczovL3ZvaWNlLmJhaWR1LmNvbS9hY3QvbmV3cG5ldW1vbmlhL25ld3BuZXVtb25p
YScsIDE6ICdodHRwczovL25ld3Muc2luYS5jbi96dF9kL3lpcWluZzAxMjEnLCAyOiAnaHR0cHM6
Ly93cC5tLjE2My5jb20vMTYzL3BhZ2UvbmV3cy92aXJ1c19yZXBvcnQvaW5kZXguaHRtbCcsIDM6
ICdodHRwczovL25ld3MucXEuY29tL3p0MjAyMC9wYWdlL2ZlaXlhbi5odG0jLycsIDQ6ICdodHRw
czovL3NhLnNvZ291LmNvbS9uZXctd2ViYWxsL3BhZ2Uvc2dzL2VwaWRlbWljJywgNTogJ2h0dHBz
Oi8vbmV3cy5pZmVuZy5jb20vYy9zcGVjaWFsLzd0UGxEU3pEZ1ZrJywgNjogJ2h0dHA6Ly93d3cu
dGNyai5jb20uY24veXF6dC9pbmRleC5jaHRtbCcsIDc6ICdodHRwOi8vc2hvdWppLjM2MC5jbi9m
eXlxZ2p4L2luZGV4Lmh0bWwnLCA4OiAnaHR0cHM6Ly9uY292LmR4eS5jbi9uY292aDUvdmlldy9w
bmV1bW9uaWEnLCA5OiAnaHR0cHM6Ly92aXAuamlhbnNoaWFwcC5jb20vcC9jb3ZpZDE5LW92ZXJz
ZWFzJywgMTA6ICdodHRwczovL2kuc25zc2RrLmNvbS91Z2MvaG90Ym9hcmRfZmUvaG90X2xpc3Qv
dGVtcGxhdGUvaG90X2xpc3QvZm9ydW1fdGFiLmh0bWwnLCAxMTogJ2h0dHA6Ly9tLnNpbm92aXNp
b24ubmV0L25ld3BuZXVtb25pYS5waHAnfQ=="""))
        self.ui=Ui_MainWindow()
        self.ui.setupUi(self)
        self.broswer=QWebEngineView()
        self.Layout = QHBoxLayout(self.ui.frame)
        self.Layout.setContentsMargins(0, 0, 0, 0)
        self.Layout.addWidget(self.broswer)
        self.broswer.load(QUrl(self.my_dict[0]))
        self.slot_init()

    def slot_init(self):
        self.ui.comboBox.currentIndexChanged[int].connect(self.change_engine)
        self.broswer.loadFinished.connect(self.change_state)
        self.broswer.loadProgress[int].connect(self.show_load_progress)

    @pyqtSlot(int)
    def change_engine(self,index):
        """
        改变引擎，触发
        :param index:
        :return:
        """
        self.ui.comboBox.setEnabled(False)
        self.broswer.load(QUrl(self.my_dict[index]))

    def change_state(self):
        """
        加载过程中，禁用comboBox
        :return:
        """
        self.ui.comboBox.setEnabled(True)

    def show_load_progress(self,p):
        """
        显示浏览器加载进度
        :param p:
        :return:
        """
        self.ui.statusBar.showMessage(str(p)+"%")
        if p==100:
            self.ui.statusBar.showMessage("完成",3000)

    def closeEvent(self,event):
        ret=QMessageBox.question(self,"退出","确定要退出吗？",QMessageBox.Yes|QMessageBox.No,QMessageBox.Yes)
        if ret==QMessageBox.Yes:
            event.accept()
        else:
            event.ignore()

if __name__ == '__main__':
    app=QApplication(sys.argv)
    ui=Covid19_viwer()
    ui.show()
    sys.exit(app.exec_())

2.main_window.py

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

from PyQt5 import QtCore, QtGui, QtWidgets


class Ui_MainWindow(object):
    def setupUi(self, MainWindow):
        MainWindow.setObjectName("MainWindow")
        MainWindow.resize(800, 600)
        self.centralwidget = QtWidgets.QWidget(MainWindow)
        self.centralwidget.setObjectName("centralwidget")
        self.verticalLayout_3 = QtWidgets.QVBoxLayout(self.centralwidget)
        self.verticalLayout_3.setObjectName("verticalLayout_3")
        self.verticalLayout_2 = QtWidgets.QVBoxLayout()
        self.verticalLayout_2.setObjectName("verticalLayout_2")
        self.horizontalLayout = QtWidgets.QHBoxLayout()
        self.horizontalLayout.setContentsMargins(-1, 10, -1, 10)
        self.horizontalLayout.setObjectName("horizontalLayout")
        spacerItem = QtWidgets.QSpacerItem(40, 20, QtWidgets.QSizePolicy.Expanding, QtWidgets.QSizePolicy.Minimum)
        self.horizontalLayout.addItem(spacerItem)
        self.label = QtWidgets.QLabel(self.centralwidget)
        self.label.setObjectName("label")
        self.horizontalLayout.addWidget(self.label)
        self.comboBox = QtWidgets.QComboBox(self.centralwidget)
        self.comboBox.setEnabled(False)
        self.comboBox.setObjectName("comboBox")
        self.comboBox.addItem("")
        self.comboBox.addItem("")
        self.comboBox.addItem("")
        self.comboBox.addItem("")
        self.comboBox.addItem("")
        self.comboBox.addItem("")
        self.comboBox.addItem("")
        self.comboBox.addItem("")
        self.comboBox.addItem("")
        self.comboBox.addItem("")
        self.comboBox.addItem("")
        self.comboBox.addItem("")
        self.horizontalLayout.addWidget(self.comboBox)
        spacerItem1 = QtWidgets.QSpacerItem(40, 20, QtWidgets.QSizePolicy.Expanding, QtWidgets.QSizePolicy.Minimum)
        self.horizontalLayout.addItem(spacerItem1)
        self.verticalLayout_2.addLayout(self.horizontalLayout)
        self.horizontalLayout_2 = QtWidgets.QHBoxLayout()
        self.horizontalLayout_2.setObjectName("horizontalLayout_2")
        self.frame = QtWidgets.QFrame(self.centralwidget)
        self.frame.setFrameShape(QtWidgets.QFrame.StyledPanel)
        self.frame.setFrameShadow(QtWidgets.QFrame.Raised)
        self.frame.setObjectName("frame")
        self.horizontalLayout_2.addWidget(self.frame)
        self.verticalLayout_2.addLayout(self.horizontalLayout_2)
        self.verticalLayout_2.setStretch(0, 1)
        self.verticalLayout_2.setStretch(1, 20)
        self.verticalLayout_3.addLayout(self.verticalLayout_2)
        MainWindow.setCentralWidget(self.centralwidget)
        self.menubar = QtWidgets.QMenuBar(MainWindow)
        self.menubar.setGeometry(QtCore.QRect(0, 0, 800, 26))
        self.menubar.setObjectName("menubar")
        MainWindow.setMenuBar(self.menubar)
        self.statusBar = QtWidgets.QStatusBar(MainWindow)
        self.statusBar.setObjectName("statusBar")
        MainWindow.setStatusBar(self.statusBar)

        self.retranslateUi(MainWindow)
        QtCore.QMetaObject.connectSlotsByName(MainWindow)

    def retranslateUi(self, MainWindow):
        _translate = QtCore.QCoreApplication.translate
        MainWindow.setWindowTitle(_translate("MainWindow", "疫情情况快速查询"))
        self.label.setText(_translate("MainWindow", "引擎选择："))
        self.comboBox.setItemText(0, _translate("MainWindow", "百度"))
        self.comboBox.setItemText(1, _translate("MainWindow", "新浪"))
        self.comboBox.setItemText(2, _translate("MainWindow", "网易"))
        self.comboBox.setItemText(3, _translate("MainWindow", "腾讯"))
        self.comboBox.setItemText(4, _translate("MainWindow", "搜狗"))
        self.comboBox.setItemText(5, _translate("MainWindow", "凤凰"))
        self.comboBox.setItemText(6, _translate("MainWindow", "猕尔"))
        self.comboBox.setItemText(7, _translate("MainWindow", "360"))
        self.comboBox.setItemText(8, _translate("MainWindow", "丁香园"))
        self.comboBox.setItemText(9, _translate("MainWindow", "华尔街"))
        self.comboBox.setItemText(10, _translate("MainWindow", "今日头条"))
        self.comboBox.setItemText(11, _translate("MainWindow", "美国中文网"))

四．总结

本次使用PyQt5开发了一款疫情信息快速查看工具，实现了多个数据源的查看，代码量不大，功能相当于浏览器，只是限定了一些特定网址。希望大家也动手做起来，程序打包好放在了百度云（密码：8888）思路、代码方面有什么不足欢迎各位大佬指正、批评！