Can't mix pn.bind with streams in DynamicMaps anymore #6008
Description
HoloViews 1.18.1
Param 2.0.1
Panel 1.3.4
Description of expected behavior and the observed behavior
I used to be able to wrap a pn.bind within a DynamicMap and add a streams argument like the following:
dmap = hv.DynamicMap(pn.bind(function, arg=some_widget), streams=[some_stream])
This is useful for plots driven both by widgets and streams.
But now this causes an error where expected inputs are missing, maybe related to the new Param version.
MRE
In a panel server
import holoviews as hv
import panel as pn
pn.extension()
def make_plot(z, x_range, y_range):
print(z)
print(x_range, y_range)
return hv.Curve([1, 2, 3, 4])
slider = pn.widgets.IntSlider(name='Slider', start=0, end=10)
range_xy = hv.streams.RangeXY()
dmap = hv.DynamicMap(pn.bind(make_plot, z=slider), streams=[range_xy])
pn.Column(slider, dmap).servable()Stack traceback and/or browser JavaScript console output
return eval_fn()(*combined_args, **combined_kwargs) Traceback (most recent call last):
File "/home/mathurin/miniconda3/envs/hv/lib/python3.12/site-packages/bokeh/application/handlers/code_runner.py", line 229, in run
exec(self._code, module.__dict__)
File "/home/mathurin/PycharmProjects/test/toast.py", line 18, in <module>
pn.Column(slider, dmap).servable()
File "/home/mathurin/miniconda3/envs/hv/lib/python3.12/site-packages/panel/viewable.py", line 394, in servable
self.server_doc(title=title, location=location) # type: ignore
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/home/mathurin/miniconda3/envs/hv/lib/python3.12/site-packages/panel/viewable.py", line 1023, in server_doc
model = self.get_root(doc)
^^^^^^^^^^^^^^^^^^
File "/home/mathurin/miniconda3/envs/hv/lib/python3.12/site-packages/panel/layout/base.py", line 309, in get_root
root = super().get_root(doc, comm, preprocess)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/home/mathurin/miniconda3/envs/hv/lib/python3.12/site-packages/panel/viewable.py", line 670, in get_root
root = self._get_model(doc, comm=comm)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/home/mathurin/miniconda3/envs/hv/lib/python3.12/site-packages/panel/layout/base.py", line 177, in _get_model
objects, _ = self._get_objects(model, [], doc, root, comm)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/home/mathurin/miniconda3/envs/hv/lib/python3.12/site-packages/panel/layout/base.py", line 159, in _get_objects
child = pane._get_model(doc, root, model, comm)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/home/mathurin/miniconda3/envs/hv/lib/python3.12/site-packages/panel/pane/holoviews.py", line 414, in _get_model
plot = self._render(doc, comm, root)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/home/mathurin/miniconda3/envs/hv/lib/python3.12/site-packages/panel/pane/holoviews.py", line 509, in _render
return renderer.get_plot(self.object, **kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/home/mathurin/miniconda3/envs/hv/lib/python3.12/site-packages/holoviews/plotting/bokeh/renderer.py", line 68, in get_plot
plot = super().get_plot(obj, doc, renderer, **kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/home/mathurin/miniconda3/envs/hv/lib/python3.12/site-packages/holoviews/plotting/renderer.py", line 217, in get_plot
initialize_dynamic(obj)
File "/home/mathurin/miniconda3/envs/hv/lib/python3.12/site-packages/holoviews/plotting/util.py", line 270, in initialize_dynamic
dmap[dmap._initial_key()]
~~~~^^^^^^^^^^^^^^^^^^^^^
File "/home/mathurin/miniconda3/envs/hv/lib/python3.12/site-packages/holoviews/core/spaces.py", line 1216, in __getitem__
val = self._execute_callback(*tuple_key)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/home/mathurin/miniconda3/envs/hv/lib/python3.12/site-packages/holoviews/core/spaces.py", line 983, in _execute_callback
retval = self.callback(*args, **kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/home/mathurin/miniconda3/envs/hv/lib/python3.12/site-packages/holoviews/core/spaces.py", line 550, in __call__
return self.callable.rx.value
^^^^^^^^^^^^^^^^^^^^^^
File "/home/mathurin/miniconda3/envs/hv/lib/python3.12/site-packages/param/reactive.py", line 253, in value
return self._reactive()
^^^^^^^^^^^^^^^^
File "/home/mathurin/miniconda3/envs/hv/lib/python3.12/site-packages/param/depends.py", line 41, in _depends
return func(*args, **kw)
^^^^^^^^^^^^^^^^^
File "/home/mathurin/miniconda3/envs/hv/lib/python3.12/site-packages/param/reactive.py", line 431, in wrapped
return eval_fn()(*combined_args, **combined_kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
TypeError: make_plot() missing 2 required positional arguments: 'x_range' and 'y_range'