Mastering GUI Programming with Python

Questions

Try these questions to test your knowledge from this chapter:

1. The following code is giving you an attribute error; what's wrong?

   from PyQt5 import QtWebEngine as qtwe   w = qtwe.QWebEngineView()

2. The following code should connect this UrlBar class with a QWebEngineView so that the entered URL is loaded when the return/Enter key is pressed. It doesn't work, though; what is wrong?

   class UrlBar(qtw.QLineEdit):       url_request = qtc.pyqtSignal(str)       def __init__(self):           super().__init__()           self.returnPressed.connect(self.request)       def request(self):           self.url_request.emit(self.text())   mywebview = qtwe.QWebEngineView()   myurlbar = UrlBar()   myurlbar.url_request(mywebview.load)

3. What is the result of the following code?

 class WebView(qtwe.QWebEngineView): ...