Panelite HoloViews.ipynb: No such file or directory: '/lib/python3.10/site-packages/bokeh/server/static/js/bokeh.min.js'

[MarcSkovMadsen]

Panelite==0.14.3

I am trying to improve the user experience of Panelite in #4388. When trying to run the HoloViews.ipynb reference notebook in Panelite I get the exception below.

---------------------------------------------------------------------------
FileNotFoundError                         Traceback (most recent call last)
Cell In[5], line 2
      1 import pandas as pd
----> 2 import hvplot.pandas
      3 import holoviews.plotting.bokeh
      5 def sine(frequency=1.0, amplitude=1.0, function='sin'):

File /lib/python3.10/site-packages/hvplot/pandas.py:25
     21     setattr(pd.Series, interactive, interactive_prop)
     23     post_patch(extension, logo)
---> 25 patch()

File /lib/python3.10/site-packages/hvplot/pandas.py:23, in patch(name, interactive, extension, logo)
     20 setattr(pd.DataFrame, interactive, interactive_prop)
     21 setattr(pd.Series, interactive, interactive_prop)
---> 23 post_patch(extension, logo)

File /lib/python3.10/site-packages/hvplot/__init__.py:166, in post_patch(extension, logo)
    164 def post_patch(extension='bokeh', logo=False):
    165     if extension and not getattr(_hv.extension, '_loaded', False):
--> 166         hvplot_extension(extension, logo=logo)

File /lib/python3.10/site-packages/pyviz_comms/__init__.py:64, in extension.__new__(cls, *args, **kwargs)
     62 except Exception:
     63     pass
---> 64 return param.ParameterizedFunction.__new__(cls, *args, **kwargs)

File /lib/python3.10/site-packages/param/parameterized.py:3658, in ParameterizedFunction.__new__(class_, *args, **params)
   3656 inst = class_.instance()
   3657 inst.param._set_name(class_.__name__)
-> 3658 return inst.__call__(*args,**params)

File /lib/python3.10/site-packages/hvplot/utilities.py:45, in hvplot_extension.__call__(self, *args, **params)
     40 def __call__(self, *args, **params):
     41     # importing e.g. hvplot.pandas always loads the bokeh extension.
     42     # so hvplot.extension('matplotlib', compatibility='bokeh') doesn't
     43     # require the user or the code to explicitely load bokeh.
     44     compatibility = params.pop('compatibility', None)
---> 45     super().__call__(*args, **params)
     46     backend = _hv.Store.current_backend
     47     if compatibility in ['matplotlib', 'plotly'] and backend != compatibility:

File /lib/python3.10/site-packages/holoviews/ipython/__init__.py:187, in notebook_extension.__call__(self, *args, **params)
    185     Store.renderers[r].load_nb(inline=p.inline)
    186 if not same_cell_execution:
--> 187     Renderer.load_nb(inline=p.inline)
    189 if hasattr(ip, 'kernel') and not loaded:
    190     Renderer.comm_manager.get_client_comm(notebook_extension._process_comm_msg,
    191                                           "hv-extension-comm")

File /lib/python3.10/site-packages/holoviews/plotting/renderer.py:643, in Renderer.load_nb(cls, inline)
    637 @classmethod
    638 def load_nb(cls, inline=True):
    639     """
    640     Loads any resources required for display of plots
    641     in the Jupyter notebook
    642     """
--> 643     load_notebook(inline)
    644     with param.logging_level('ERROR'):
    645         try:

File /lib/python3.10/site-packages/panel/io/notebook.py:251, in load_notebook(inline, load_timeout)
    249 resources = Resources.from_bokeh(resources)
    250 try:
--> 251     bundle = bundle_resources(None, resources)
    252     bundle = Bundle.from_bokeh(bundle)
    253     configs, requirements, exports, skip_imports = require_components()

File /lib/python3.10/site-packages/panel/io/resources.py:227, in bundle_resources(roots, resources)
    224     if not use_mathjax and "bokeh-mathjax" in js_resources.js_components:
    225         js_resources.js_components.remove("bokeh-mathjax")
--> 227     js_files.extend(js_resources.js_files)
    228     js_raw.extend(js_resources.js_raw)
    230 css_files.extend(css_resources.css_files)

File /lib/python3.10/site-packages/panel/io/resources.py:348, in Resources.js_files(self)
    344 @property
    345 def js_files(self):
    346     from ..config import config
--> 348     files = super(Resources, self).js_files
    349     self.extra_resources(files, '__javascript__')
    351     js_files = self.adjust_paths(files)

File /lib/python3.10/site-packages/bokeh/resources.py:481, in JSResources.js_files(self)
    479 @property
    480 def js_files(self) -> List[str]:
--> 481     files, _, _ = self._resolve("js")
    482     external_resources = self._collect_external_resources("__javascript__")
    483     return external_resources + files

File /lib/python3.10/site-packages/bokeh/resources.py:397, in BaseResources._resolve(self, kind)
    394 hashes = {}
    396 if self.mode == "inline":
--> 397     raw = [self._inline(path) for path in paths]
    398 elif self.mode == "relative":
    399     root_dir = self.root_dir or self._default_root_dir

File /lib/python3.10/site-packages/bokeh/resources.py:397, in <listcomp>(.0)
    394 hashes = {}
    396 if self.mode == "inline":
--> 397     raw = [self._inline(path) for path in paths]
    398 elif self.mode == "relative":
    399     root_dir = self.root_dir or self._default_root_dir

File /lib/python3.10/site-packages/bokeh/resources.py:418, in BaseResources._inline(path)
    416 filename = basename(path)
    417 begin = f"/* BEGIN {filename} */"
--> 418 with open(path, "rb") as f:
    419     middle = f.read().decode("utf-8")
    420 end = f"/* END {filename} */"

FileNotFoundError: [Errno 44] No such file or directory: '/lib/python3.10/site-packages/bokeh/server/static/js/bokeh.min.js'

I don't know if this is a Bokeh issue or due to Panel using a special, scaled down version of Bokeh?

[MarcSkovMadsen]

Another example is the reference/panes/Param.ipynb notebook

[MarcSkovMadsen]

Other example notebook that fails due to this error are

• gallery/apis/stocks_hvplot.ipynb
• gallery/dynamic/dynamic_timeseries_image_analysis.ipynb
• gallery/layout/dynamic_tabs.ipynb
• gallery/layout/plot_with_columns.ipynb
• gallery/param/reactive_plots.ipynb
• gallery/simple/defer_data_load.ipynb

[MarcSkovMadsen]

The problem is really with hvplot

[MarcSkovMadsen]

I can see that if I rerun the failing cell of gallery/param/reactive_plots.ipynb where hvplot is imported it does not fail the second time and the notebook works?! (Except that it also needs to rerun the component cell twice to work - same as #4416)

hvplot-import-twice.mp4

[MarcSkovMadsen]

I see the issue in gallery/streaming/hardware_automation.ipynb too. And here we are using HoloViews. Its actually when we run hv.extension("bokeh") this fails.

[MarcSkovMadsen]

This is the biggest issue to solve for Panelite. Affects many, many notebooks. And Panel in Panelite not working with hvplot/ HoloViews is not great.

[MarcSkovMadsen]

I can see that if I run pn.extension before hv.extension then it does not fail. But it does if I do it the other way around.