Tutorial plotly.figure_factory create_dendrogram() not working resulting in AttributeError

[Snirpsi]

Hi,
when i run the tutorial from the website https://plotly.com/python/dendrogram/ the program crashes.

I put the code in a test.py file in a complete new venv.

import plotly.figure_factory as ff
import numpy as np
np.random.seed(1)

X = np.random.rand(15, 12) # 15 samples, with 12 dimensions each
fig = ff.create_dendrogram(X)
fig.update_layout(width=800, height=500)
fig.show()

Error:

Traceback (most recent call last):
  File "/home/snirps/Documents/GitHub/testproject/.venv/lib/python3.11/site-packages/scipy/__init__.py", line 137, in __getattr__
    return globals()[name]
           ~~~~~~~~~^^^^^^
KeyError: 'array'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/home/snirps/Documents/GitHub/testproject/test.py", line 6, in <module>
    fig = ff.create_dendrogram(X)
          ^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/snirps/Documents/GitHub/testproject/.venv/lib/python3.11/site-packages/plotly/figure_factory/_dendrogram.py", line 94, in create_dendrogram
    dendrogram = _Dendrogram(
                 ^^^^^^^^^^^^
  File "/home/snirps/Documents/GitHub/testproject/.venv/lib/python3.11/site-packages/plotly/figure_factory/_dendrogram.py", line 148, in __init__
    (dd_traces, xvals, yvals, ordered_labels, leaves) = self.get_dendrogram_traces(
                                                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/snirps/Documents/GitHub/testproject/.venv/lib/python3.11/site-packages/plotly/figure_factory/_dendrogram.py", line 346, in get_dendrogram_traces
    icoord = scp.array(P["icoord"])
             ^^^^^^^^^
  File "/home/snirps/Documents/GitHub/testproject/.venv/lib/python3.11/site-packages/scipy/__init__.py", line 139, in __getattr__
    raise AttributeError(
AttributeError: Module 'scipy' has no attribute 'array'

I have the following packages installed with pip.

pip==23.2
pipdeptree==2.13.2
plotly==5.18.0
├── packaging [required: Any, installed: 23.2]
└── tenacity [required: >=6.2.0, installed: 8.2.3]
scipy==1.12.0
└── numpy [required: >=1.22.4,<1.29.0, installed: 1.26.3]
setuptools==68.1.2

python:

Python 3.11.6

Thanks for your great work.

[Coding-with-Adam]

hi @Snirpsi
Thank you for sharing this. The error appears to be related to scipy==1.12.0.
If you pip install scipy==1.11.4 it will work.

[alexcjohnson]

Will be fixed by #4487 which we'll include in the next release (hopefully next week)