在控制台运行其他命令时，如何在ipython中运行PyQt而不冻结图形用户界面？

import sys
from PyQt5.QtWidgets import QApplication, QWidget
import asyncio

class MyApplication(QApplication):
    def exec_(self):
        self._is_running = True
        while self._is_running:
            self.processEvents()
            asyncio.sleep(0.01)

app = MyApplication([])

async def run_gui():
    # 在这里运行PyQt相关的代码

asyncio.ensure_future(run_gui())

asyncio.get_event_loop().run_forever()