以下代码不会在 Jupyter 实验室中呈现：
%matplotlib widget
import plotly.express as px
import numpy as np
import pandas as pd
df = pd.DataFrame(np.random.randint(0,100,size=(5, 4)), columns=list('ABCD'))
px.bar(df, x='A', y='B')
I have tried to install all the dependencies and extensions mentioned in here
https://plot.ly/python/getting-started/#jupyterlab-support-python-35 https://plot.ly/python/getting-started/#jupyterlab-support-python-35
还有这里的步骤https://github.com/matplotlib/jupyter-matplotlib https://github.com/matplotlib/jupyter-matplotlib
没有任何作用
这是我的设置：
jupyter lab --version
1.0.2
python --version
Python 3.6.1 :: Continuum Analytics, Inc.
conda list jupyterlab
# packages in environment at C:\Users\***\Anaconda3:
#
# Name Version Build Channel
jupyterlab 1.0.2 py36hf63ae98_0
jupyterlab_launcher 0.13.1 py36_0
jupyterlab_server 1.0.0 py_0
conda list nodejs
# packages in environment at C:\Users\***\Anaconda3:
#
# Name Version Build Channel
nodejs 0.1.1 pypi_0 pypi
conda list plotly
# packages in environment at C:\Users\***\Anaconda3:
#
# Name Version Build Channel
plotly 4.1.0 pypi_0 pypi
plotly-express 0.4.1 pypi_0 pypi
EDIT:
jupyter-labextension list
JupyterLab v1.0.2
Known labextensions:
app dir: C:\Users\***\Anaconda3\share\jupyter\lab
@jupyter-widgets/jupyterlab-manager v1.0.2 enabled ok
@jupyterlab/git v0.8.0 enabled ok
@jupyterlab/plotly-extension v1.0.0 enabled ok
jupyter-matplotlib v0.4.2 enabled ok
jupyterlab-chart-editor v1.2.0 enabled ok
jupyterlab-plotly v1.1.0 enabled ok
plotlywidget v1.1.0 enabled ok
编辑：这些说明和更多内容现已在我们的官方中故障排除指南 https://plot.ly/python/troubleshooting/!
可能是先前安装的残留或安装尝试导致了问题。我建议从全新安装开始，或者卸载所有 Plotly 模块（来自 pip 和 conda！）以及与plotly 相关的 jlab 扩展，然后按照此处的说明进行操作：https://plot.ly/python/getting-started/ https://plot.ly/python/getting-started/
卸载模块的问题是
conda uninstall plotly
pip uninstall plotly
然后根据上面链接的说明重新安装其中之一，但不能同时重新安装两者。
卸载 JupyterLab 扩展的方法是
jupyter labextension uninstall @jupyterlab/plotly-extension
jupyter labextension uninstall jupyterlab-plotly
jupyter labextension uninstall plotlywidget