install pyqt5 on python3

html2pdf.py

import os
import sys
import argparse
import os
import sys
import argparse

from PyQt5.QtWebEngineWidgets import QWebEnginePage
from PyQt5.QtWidgets import QApplication
from PyQt5.QtCore import QUrl, QObject
from PyQt5.QtPrintSupport import QPrinter



class PrinterView(QObject):
    def __init__(self, url, filename, do_preview, parent=None):
        super(PrinterView, self).__init__(parent)
        self.do_preview = do_preview
        self.filename = filename
        self.page = QWebEnginePage(self)
        self.page.load(QUrl(url))
        # self.setZoomFactor(1)

        self.printer = QPrinter(QPrinter.HighResolution)
        self.printer.setOutputFileName(filename)
        self.printer.setOutputFormat(QPrinter.PdfFormat)
        self.printer.setOrientation(QPrinter.Portrait)
        self.printer.setPaperSize(QPrinter.A4)
        self.printer.setFullPage(True)
        self.page.loadFinished.connect(self.onloadFinished)
        # self.page.pdfPrintingFinished.connect(self.onPdfPrintingFinished)

    def onloadFinished(self, ok):
        if self.do_preview:
            self.page.show()
        else:
            try:
                self.page.print(self.printer, self.onPdfPrintingFinished)
            except Exception as e:
                print('error')
            QApplication.exit(os.EX_OK)

    def onPdfPrintingFinished(self, *args):
        pass



if __name__ == '__main__':
    app = QApplication(sys.argv)
    #     parser = argparse.ArgumentParser()
    #     parser.add_argument("--url", "-i", help="Input URL (http://example.com, file:///home/user/example.html, ...)",
    #                         required=True)
    #     parser.add_argument("--output", "-o", help="Write pdf to this file", required=True)
    #     parser.add_argument("--preview", "-p", help="Open preview", action="store_true")
    #     args = parser.parse_args()
    #     a = PrinterView(args.url, args.output, args.preview)
    a = PrinterView('file:///home/dev1/xx.html', '/home/dev1/yy.pdf', False)
    sys.exit(app.exec_())