Start pydoc server

def start_server(self):
        """Start pydoc server"""
        if self.server is None:
            self.port = select_port(default_port=self.DEFAULT_PORT)
            self.set_home_url('http://localhost:%d/' % self.port)
        elif self.server.isRunning():
            self.server.server_started.disconnect(self.initialize_continued)
            self.server.quit()
        self.server = PydocServer(port=self.port)
        self.server.server_started.connect(self.initialize_continued)
        self.server.start()