可以直接将html写在python里面做显示

"""
加载内部的HTML
"""
import os

from PyQt5.QtWidgets import *
from PyQt5.QtCore import QTimer, QDateTime
from PyQt5.QtGui import *
from PyQt5.QtCore import *
from PyQt5.QtWebEngineWidgets import *
import sys

class WebEngineView(QMainWindow):

    def __init__(self):
        super(WebEngineView, self).__init__()
        self.setWindowTitle("装载本地web页面")
        self.setGeometry(5, 30, 1355, 730)

        url = os.getcwd() + os.path.sep + "HTML/test.html"
        self.browser = QWebEngineView()
        self.browser.setHtml(
            """
            
            
            
                
                
            
            
            
Hello PyQt5
            
Hello PyQt5
            
Hello PyQt5
            
Hello PyQt5
            
            
            """
        )
        self.setCentralWidget(self.browser)

if __name__ == "__main__":
    app = QApplication(sys.argv)
    main = WebEngineView()
    main.show()

    sys.exit(app.exec_())