问:我在 MacOs 10.9 中使用 pip3 安装了 python3 和 jupyter notebook。
当我尝试运行小部件时,它会给出没有 javascript 小部件的错误。我在 Jupyter-notebook 中安装了 python3 和 R 内核。
代码:
from ipywidgets import widgets
from IPython.display import display
text = widgets.Text()
display(text)
text.on_submit('hello')
错误:
Widget Javascript not detected. It may not be installed or enabled properly.
尝试:
sudo -H pip3 install ipywidgets
sudo -H pip3 install -upgrade ipywidgets
jupyter nbextension enable --py widgetsnbextension
# restarted the computer.
最后一个命令给出错误。
[EnableNBExtensionApp] CRITICAL | Bad config encountered during initialization:
[EnableNBExtensionApp] CRITICAL | Unrecognized flag: '--py'
请注意,在 mac 我有 jupyter-nbextension 命令,但命令:
jupyter-nbextension enable --py widgetsnbextension
也不起作用。
但是jupyter nbextension enable widgetsnbextension
没有错误,也什么都不做。如果我运行代码,则会弹出相同的错误。
还,
import ipywidgets
ipywidgets.__version__
给出'6.0.0'。
一些注意事项:
which jupyter
jupyter is /Library/Frameworks/Python.framework/Versions/3.5/bin/jupyter
which jupyter-notebook
jupyter-notebook is /Library/Frameworks/Python.framework/Versions/3.5/bin/jupyter-notebook
相关链接:
https://github.com/jupyter-widgets/ipywidgets/issues/541
https://github.com/jupyter/help/issues/32
https://github.com/jupyter/help/issues/131
https://github.com/binder-project/binder/issues/83
如何安装小部件?
我需要单独安装java吗?