I know that this topic has already appeared here and in other places. I tried to follow couple paths and can not make JupyterLab to display dash apps.
Probably there is some switch I need to turn on but can’t find out what it is and have no idea where else to look. Need some help, please.
Here is how I installed test environment
conda create --name env4 python=3.8 scipy pandas jupyterlab numpy "ipywidgets=7.5" matplotlib dash conda activate env4 conda install -c conda-forge -c plotly jupyter-dash ipython kernel install --user --name=env4 jupyter labextension install @jupyter-widgets/jupyterlab-manager firstname.lastname@example.org jupyter labextension install email@example.com conda install -c plotly plotly=4.12.0
(last command is there because v4.11 is loaded natively by conda).
Here is my JupyterLab extension list:
@jupyter-widgets/jupyterlab-manager v2.0.0 enabled OK jupyterlab-dash v0.3.0 enabled OK jupyterlab-plotly v4.12.0 enabled OK plotlywidget v4.12.0 enabled OK
Here is some code from Dash website as an example of what I can’t display in JupyterLab.
import plotly.graph_objects as go # or plotly.express as px fig = go.Figure() # or any Plotly Express function e.g. px.bar(...) # fig.add_trace( ... ) # fig.update_layout( ... ) import dash import dash_core_components as dcc import dash_html_components as html from jupyter_dash import JupyterDash app = JupyterDash(__name__) # app = dash.Dash() app.layout = html.Div([ dcc.Graph(figure=fig) ]) app.run_server(mode='jupyterlab', port = 8090, dev_tools_ui=True, #debug=True, dev_tools_hot_reload =True, threaded=True)
it opens new tab in JupyterLab but tab is blank.
The same when I use mode = inline
mode=external produces new tab in browser, as it should.
Sorry for so many words but I’m bit frustrated that I can’t make it work.
At the same time Plotly graphs are displayed properly.
As said, I’ve tried different combinations and none seems to work. Need some ideas what to do. pls.