Write Qt Desktop App using Python

Qt is cross platform Desktop framework with IDE Qt Creator. But its code behind is C++.
To replace C++ with Python, we need Python 3.4, PyQt4.11 and Qt4.8.7 download and installed properly
The IDE is Jetbrain PyCharm Community Edition. It can compile/run test GUI but no design surface to work with.

Here is the Python+PyQt+Qt code and Simulate a browser

from PyQt4.QtCore import *
from PyQt4.QtGui import *
import sys

from PyQt4.QtWebKit import QWebView


class BlogBrowser(QDialog):
    def __init__(self):
        QDialog.__init__(self)

        layout=QGridLayout()
        self.setLayout(layout)

        self.url_ledt=QLineEdit("http://homelab16.blogspot.com")
        go_btn=QPushButton("Go")
        self.browser=QWebView(self)
        self.browser.setUrl(QUrl(self.url_ledt.text()))
        layout.addWidget(self.url_ledt,0,0)
        layout.addWidget(go_btn,0,1)
        layout.addWidget(self.browser,1,0,1,2)

        go_btn.clicked.connect(self.navigate)

    def navigate(self, txt):
        txt=self.url_ledt.text()
        if "http://" not in txt:
            txt="http://"+txt
        self.browser.setUrl(QUrl(txt))

app = QApplication(sys.argv)

bb=BlogBrowser()
bb.show()
app.exec_()

Html5 Test: it scores 240 vs. IE Edge 421 vs. FF 478 vs. Chrome 521 out of max 555