Сергей Тряпкин

def initUI(self):
        #кнопки
        grid = QGridLayout()
        self.setLayout(grid)

        positions = [(i,j) for i in range(15) for j in range(1)]

        for position, name, ahref in zip(positions, names, a_href):
            button = QPushButton(name, self)
            #button.url = ahref
            #print(open_url)
            #print(open_url)
            button.setToolTip(ahref)
            button.clicked.connect(partial(self.initNew, ahref))
            grid.addWidget(button, *position)
            #button.clicked.connect(lambda: self.initNew(button.url))
        self.move(0, 0)
        self.setWindowTitle('Моя читалка')
        self.show()

    def initNew(self, args):
        msgBox = QMessageBox()
        #url = (lambda:self.open_url)
        url = args
        print (url)
        g = Grab()
        g.go(url)
        msg = g.doc.select('//div[@class="post-content"]').text()
        msgBox.setText(msg)
        msgBox.setWindowTitle('Новость')
        msgBox.setStandardButtons(QMessageBox.Ok)
        ret = msgBox.exec_();