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pyqt5 を使用して進行状況バーをリアルタイムで更新しようとしていますが、オンラインのドキュメントは今のところ非常に限られているようです。スレッドとシグナルを使用してそれを行うことができることをオンラインで読みました。ただし、構文はpyqt5で変更されたようです。ここの専門家は助けてくれますか？

メインUIウィンドウ。

# -*- coding: utf-8 -*-
#
# Created by: PyQt5 UI code generator 5.9
#
# WARNING! All changes made in this file will be lost!

from PyQt5 import QtCore, QtGui, QtWidgets
from sendInvoice import *

class Ui_MainWindow(object):
    def setupUi(self, MainWindow):
        MainWindow.setObjectName("MainWindow")
        MainWindow.resize(441, 175)
        self.centralwidget = QtWidgets.QWidget(MainWindow)
        self.centralwidget.setObjectName("centralwidget")
        self.progressBar = QtWidgets.QProgressBar(self.centralwidget)
        self.progressBar.setGeometry(QtCore.QRect(30, 20, 411, 61))
        self.progressBar.setProperty("value", 0)
        self.progressBar.setObjectName("progressBar")
        self.pushButton = QtWidgets.QPushButton(self.centralwidget)
        self.pushButton.setGeometry(QtCore.QRect(160, 100, 75, 23))
        self.pushButton.setObjectName("pushButton")
        MainWindow.setCentralWidget(self.centralwidget)
        self.menubar = QtWidgets.QMenuBar(MainWindow)
        self.menubar.setGeometry(QtCore.QRect(0, 0, 441, 21))
        self.menubar.setObjectName("menubar")
        MainWindow.setMenuBar(self.menubar)
        self.statusbar = QtWidgets.QStatusBar(MainWindow)
        self.statusbar.setObjectName("statusbar")
        MainWindow.setStatusBar(self.statusbar)

        self.retranslateUi(MainWindow)
        self.pushButton.clicked.connect(self.sendInvoice)
        QtCore.QMetaObject.connectSlotsByName(MainWindow)

    def retranslateUi(self, MainWindow):
        _translate = QtCore.QCoreApplication.translate
        MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow"))
        self.pushButton.setText(_translate("MainWindow", "Send"))

    def sendInvoice(self):
        sendInvoice.sendInv()

if __name__ == "__main__":
    import sys
    app = QtWidgets.QApplication(sys.argv)
    MainWindow = QtWidgets.QMainWindow()
    ui = Ui_MainWindow()
    ui.setupUi(MainWindow)
    MainWindow.show()
    sys.exit(app.exec_())

請求書が送信されるワーカー ファイル。

import requests
import json
import sys

from PyQt5.QtWidgets import (QWidget, QProgressBar, QPushButton, QApplication)





class sendInvoice():

    def sendInv(self):
        startInvNum = int(100)
        endInvNum = int(102)
        Username = 'test'
        Password = 'test'
        AccountNum = test
        environmentURL = 'http://www.test.com/api?INV' ##remove this temporary
        totalRequest = int(endInvNum) - int(startInvNum)


        n = 1

        headerData = {
                     'Authorization': 'auth_email=' + Username + ', auth_signature=' + Password + ', auth_account=' + AccountNum,
                     'content-type': 'application/json',
        }

        QApplication.processEvents()


        for i in range(startInvNum, endInvNum+1):
            result = requests.get(environmentURL + str(i), headers=headerData)

            print (result.text)
            jsonOutput = json.loads(result.text)
            print (json.dumps(jsonOutput, sort_keys=True, indent=4))
            self.currentCount = str(n)
            self.total = str(totalRequest)
            percentage = sendInvoice.getPercentage(self)
            print (percentage)
            QApplication.processEvents()
            n += 1

    def getPercentage(self):

        count = int(self.currentCount)
        total = int(self.total)
        currentPercentage = (count / (total + 1) * 100)
        print(currentPercentage * 100)
        return currentPercentage
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