Plotly 6.0 requires jupyterlab

[vilim]

Since upgrading to Plotly 6.0, I get this error message:

---------------------------------------------------------------------------
AttributeError                            Traceback (most recent call last)
File ~/.conda/envs/detektp/lib/python3.11/site-packages/IPython/core/formatters.py:925, in IPythonDisplayFormatter.__call__(self, obj)
    923 method = get_real_method(obj, self.print_method)
    924 if method is not None:
--> 925     method()
    926     return True

File ~/.conda/envs/detektp/lib/python3.11/site-packages/plotly/basedatatypes.py:833, in BaseFigure._ipython_display_(self)
    830 import plotly.io as pio
    832 if pio.renderers.render_on_display and pio.renderers.default:
--> 833     pio.show(self)
    834 else:
    835     print(repr(self))

File ~/.conda/envs/detektp/lib/python3.11/site-packages/plotly/io/_renderers.py:429, in show(fig, renderer, validate, **kwargs)
    424     if not nbformat or Version(nbformat.__version__) < Version("4.2.0"):
    425         raise ValueError(
    426             "Mime type rendering requires nbformat>=4.2.0 but it is not installed"
    427         )
--> 429     display_jupyter_version_warnings()
    431     ipython_display.display(bundle, raw=True)
    433 # external renderers

File ~/.conda/envs/detektp/lib/python3.11/site-packages/plotly/io/_renderers.py:60, in display_jupyter_version_warnings()
     58 elif "jupyter-lab" in parent_process:
     59     jupyter_lab = optional_imports.get_module("jupyterlab")
---> 60     if jupyter_lab.__version__ < "3":
     61         # Add warning about upgrading jupyterlab
     62         warnings.warn(
     63             f"Plotly version >= 6 requires JupyterLab >= 3 but you have {jupyter_lab.__version__} installed. To upgrade JupyterLab, please run `pip install jupyterlab --upgrade`."
     64         )

AttributeError: 'NoneType' object has no attribute '__version__'

which I guess happens because jupyterlab itself is not installed in the notebook kernel environment (I use a separate jupyterlab installation in another environment, and multiple kernels that just have a ipykernel dependency)

[marthacryan]

Oh interesting! I can add handling for that case. Thanks for the issue

[vilim]

Thank you!