吴恩达机器学习optional lab中使用Jupyter notebook遇到的问题及解决方法

1、lab实验课程 C1_W1_Lab04_Cost_function_Soln中,执行到

plt_intuition(x_train,y_train)语句时报错:
Failed to load model class ‘VBoxModel‘ from module ‘@jupyter-widgets/controls Error: Module @jupyter-widgets/controls, version ^1.5.0 is not registered, however, 2.0.0 is…
解决方法:
尝试了方法一、更新库:

pip install --upgrade jupyterlab jupyterlab-widgets

方法二、卸载重装,重启JupyterLab服务:

pip uninstall jupyterlab_widgets
pip install jupyterlab_widgets==1.5.0(没有找到该版本,没安装上...重新装了最新版本)
jupyter labextension rebuild
jupyter lab

均不管用,仍然有此报错
方法三、pip安装插件

pip install -U jupyterlab ipywidgets jupyterlab-widgets

此方法有效!!!开心~

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