Support Python>=3.12

[MarcSkovMadsen]

I just tried installing ipywidgets_bokeh on python 3.12. When running an app I see

2024-09-21 12:50:58,551 Error running application handler <panel.io.handlers.ScriptHandler object at 0x7f2de053ee40>: No module named 'distutils'
File 'kernel.py', line 12, in <module>:
from distutils.version import LooseVersion Traceback (most recent call last):
  File "/usr/local/lib/python3.12/site-packages/panel/io/handlers.py", line 405, in run
    exec(self._code, module.__dict__)
  File "/code/app.py", line 4, in <module>
    pn.extension("ipywidgets")
  File "/usr/local/lib/python3.12/site-packages/pyviz_comms/__init__.py", line 64, in __new__
    return param.ParameterizedFunction.__new__(cls, *args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.12/site-packages/param/parameterized.py", line 4468, in __new__
    return inst.__call__(*args,**params)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.12/site-packages/panel/config.py", line 742, in __call__
    __import__(module)
  File "/usr/local/lib/python3.12/site-packages/panel/io/ipywidget.py", line 22, in <module>
    from ipywidgets_bokeh.kernel import (
  File "/usr/local/lib/python3.12/site-packages/ipywidgets_bokeh/__init__.py", line 1, in <module>
    from .widget import IPyWidget
  File "/usr/local/lib/python3.12/site-packages/ipywidgets_bokeh/widget.py", line 13, in <module>
    from .kernel import kernel
  File "/usr/local/lib/python3.12/site-packages/ipywidgets_bokeh/kernel.py", line 12, in <module>
    from distutils.version import LooseVersion
ModuleNotFoundError: No module named 'distutils'

According to pop-0632 distutils has been deprecated with python 3.10 and removed with Python 3.12.

[hoxbro]

Could you try install setuptools in your environment?

I think LooseVersion should be changed to packaging.version.Version for version checking.