运行Jupyter Notebook报错AttributeError: time模块无'clock'属性

本地安装Anaconda3，此前环境运行一直正常，推测故障在安装XGBoost后出现。最初尝试启动Notebook时出现与tornado版本相关的错误，将tornado卸载后通过pip重新安装，该错误随即消失，但执行jupyter notebook命令启动时出现如下报错：

Traceback (most recent call last):
  File "C:\Users\hp\anaconda3\lib\site-packages\IPython\utils\timing.py", line 27, in <module>
    import resource
ModuleNotFoundError: No module named 'resource'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "C:\Users\hp\anaconda3\Scripts\jupyter-notebook-script.py", line 10, in <module>
    sys.exit(main())
  File "C:\Users\hp\anaconda3\lib\site-packages\jupyter_core\application.py", line 264, in launch_instance
    return super(JupyterApp, cls).launch_instance(argv=argv, **kwargs)
  File "C:\Users\hp\anaconda3\lib\site-packages\traitlets\config\application.py", line 845, in launch_instance
    app.initialize(argv)
  File "C:\Users\hp\anaconda3\lib\site-packages\traitlets\config\application.py", line 88, in inner
    return method(app, *args, **kwargs)
  File "C:\Users\hp\anaconda3\lib\site-packages\notebook\notebookapp.py", line 2151, in initialize
    self.init_webapp()
  File "C:\Users\hp\anaconda3\lib\site-packages\notebook\notebookapp.py", line 1759, in init_webapp
    self.web_app = NotebookWebApplication(
  File "C:\Users\hp\anaconda3\lib\site-packages\notebook\notebookapp.py", line 179, in __init__
    settings = self.init_settings(
  File "C:\Users\hp\anaconda3\lib\site-packages\notebook\notebookapp.py", line 302, in init_settings
    nbextensions_path=jupyter_app.nbextensions_path,
  File "C:\Users\hp\anaconda3\lib\site-packages\notebook\notebookapp.py", line 1329, in nbextensions_path
    from IPython.paths import get_ipython_dir
  File "C:\Users\hp\anaconda3\lib\site-packages\IPython\__init__.py", line 49, in <module>
    from .terminal.embed import embed
  File "C:\Users\hp\anaconda3\lib\site-packages\IPython\terminal\embed.py", line 19, in <module>
    from IPython.terminal.ipapp import load_default_config
  File "C:\Users\hp\anaconda3\lib\site-packages\IPython\terminal\ipapp.py", line 30, in <module>
    from IPython.core.magics import ScriptMagics
  File "C:\Users\hp\anaconda3\lib\site-packages\IPython\core\magics\__init__.py", line 21, in <module>
    from .execution import ExecutionMagics
  File "C:\Users\hp\anaconda3\lib\site-packages\IPython\core\magics\execution.py", line 46, in <module>
    from IPython.utils.timing import clock, clock2
  File "C:\Users\hp\anaconda3\lib\site-packages\IPython\utils\timing.py", line 64, in <module>
    clocku = clocks = clock = time.clock
AttributeError: module 'time' has no attribute 'clock'

两个报错本质都是依赖版本不兼容导致：

• No module named 'resource'：resource是Unix/Linux系统专属标准库模块，Windows系统原生不存在，旧版本IPython未做Windows平台兼容处理才会触发该导入错误。
• module 'time' has no attribute 'clock'：Python 3.8及以上版本正式移除了time.clock()方法，当前环境中的IPython版本过旧，仅适配Python3.7及以下版本，才会调用已被删除的接口。

之前安装XGBoost、用pip重装tornado的操作打乱了Anaconda原本的依赖版本匹配关系，把IPython等jupyter核心依赖降级到了不兼容当前Python版本的旧版本，才触发上述错误。

• 打开Anaconda Prompt，先卸载版本混乱的相关依赖包，执行命令：
  pip uninstall -y ipython jupyter notebook tornado jupyter_core traitlets
• 用conda源重新安装适配当前环境的jupyter组件，自动匹配正确的依赖版本：
  conda install -y jupyter notebook
• 安装完成后重新执行jupyter notebook命令即可正常启动。
• 如果上述操作完成后仍存在IPython相关报错，单独升级IPython到兼容版本即可：
  pip install --upgrade ipython

注意：Anaconda环境下尽量避免用pip直接覆盖安装conda已经预装的核心依赖（如tornado、IPython、jupyter相关组件），容易出现版本冲突，这类核心包优先用conda进行安装、更新操作。

内容的提问来源于stack exchange，提问作者Muhinyia Wa Ndegwa