如何修复先启动IPython再移动Anaconda Prompt触发的事件循环异常？

问题场景 #

• 正常流程：先通过Win键+右键将Anaconda Prompt窗口移至屏幕右半部分，再启动IPython，运行无异常
• 异常流程：先启动IPython，再调整Anaconda Prompt窗口到右半部分，立刻触发Unhandled exception in event loop异常，核心错误为prompt_toolkit/layout/screen.py中assert width >=0断言失败

异常堆栈信息 #

Unhandled exception in event loop:
  File "C:\Users\name\anaconda3\Lib\site-packages\prompt_toolkit\application\application.py", line 1026, in in_term
    await _do_wait_for_enter("Press ENTER to continue...")

  File "C:\Users\name\anaconda3\Lib\site-packages\prompt_toolkit\application\application.py", line 1545, in _do_wait_for_enter
    await session.app.run_async()

  File "C:\Users\name\anaconda3\Lib\site-packages\prompt_toolkit\application\application.py", line 886, in run_async
    return await _run_async(f)
           ^^^^^^^^^^^^^^^^^^^

  File "C:\Users\name\anaconda3\Lib\site-packages\prompt_toolkit\application\application.py", line 739, in _run_async
    self._redraw()

  File "C:\Users\name\anaconda3\Lib\site-packages\prompt_toolkit\application\application.py", line 543, in _redraw
    self.context.copy().run(run_in_context)

  File "C:\Users\name\anaconda3\Lib\site-packages\prompt_toolkit\application\application.py", line 526, in run_in_context
    self.renderer.render(self, self.layout)

  File "C:\Users\name\anaconda3\Lib\site-packages\prompt_toolkit\renderer.py", line 678, in render
    WritePosition(xpos=0, ypos=0, width=size.columns, height=height),
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

  File "C:\Users\name\anaconda3\Lib\site-packages\prompt_toolkit\layout\screen.py", line 314, in __init__
    assert width >= 0

处理方案 #

1. 临时规避：维持先调整窗口位置再启动IPython的操作顺序，避开尺寸计算bug
2. 彻底修复：更新prompt_toolkit到最新版本，新版本已修复窗口尺寸变化时的边界计算问题
   • 在Anaconda Prompt中执行命令：conda update prompt_toolkit
3. 应急处理：异常触发后，按回车即可退出异常提示，恢复IPython会话使用

内容的提问来源于stack exchange，提问作者Stats Cruncher