itkwidgets `compare` error

Community
1

Hello,
(This could be related Error when executing the Binder example: “compare images side by side” #455)

It seems that the compare widget is missing:

ImportError                               Traceback (most recent call last)
Input In [1], in <cell line: 4>()
      2 import numpy as np
      3 import imageio
----> 4 from itkwidgets import view, compare, checkerboard

ImportError: cannot import name 'compare' from 'itkwidgets' (/home/edgar/.local/lib/python3.10/site-packages/itkwidgets/__init__.py)

__init__.py does not require it, and it does not seem to exist in the directory, either (ls /home/edgar/.local/lib/python3.10/site-packages/itkwidgets/)

cm.py
__init__.py
__pycache__
static
trait_types.py
_transform_types.py
_version.py
widget_checkerboard.py
widget_line_profiler.py
widget_viewer.py

I tried this with a jupyter-notebook and a jupyter-lab:

import itk
import numpy as np
import imageio
from itkwidgets import view, compare, checkerboard

itkwidgets 0.20.0 (also with 1.08a; 0.32.2 is not installable)
itk 5.3rc4
jupyter-lab 3.4.4
Python 3.10.5 (main, Jun 6 2022, 18:49:26) [GCC 12.1.0]
IPython 8.4.0
notebook server 6.4.12

2

After itk-5.3.0 is published, we will bump the dependency in itkwidgets.

3

Solved by uninstalling suggested version of itkwidgets and simply running “pip install itkwidgets”