如何在用QWebEngineView完全加载文档之前运行JavaScript代码？

from PyQt5.QtCore import QUrl
from PyQt5.QtWidgets import QApplication
from PyQt5.QtWebEngineWidgets import QWebEngineView, QWebEnginePage

app = QApplication([])

view = QWebEngineView()
page = QWebEnginePage(view)

# 创建一个JavaScript代码字符串
js_code = """
    // 这里是你的JavaScript代码
    console.log("运行JavaScript代码");
"""

# 创建一个QWebEngineScript对象，并设置属性
script = QWebEngineScript()
script.setSourceCode(js_code)
script.setWorldId(QWebEngineScript.MainWorld)
script.setInjectionPoint(QWebEngineScript.DocumentReady)

# 将QWebEngineScript对象添加到QWebEnginePage的scripts()列表中
page.scripts().insert(script)

# 加载文档到QWebEngineView中
view.setPage(page)
view.load(QUrl("https://example.com"))

app.exec_()