xdrlib dropped from Py3.13

[prjemian]

One of the breaking changes with Python 3.13 is dropping xdrlib from the Standard Python Library, per PEP 594.

[prjemian]

At least this file is affected: https://github.com/EPICS-synApps/support/blob/5774e8accd88c687d569e1c301014c0780a0620c/utils/mdaExplorer/mda.py#L17-L22

[prjemian]

Pay attention to commit https://github.com/EPICS-synApps/support/commit/f49b4b9ab7844b24060d3b3163d59eb76a3c5c7e. Its commit messages states:

Don't use f_xdrlib. It doesn't work for large numbers of data points.

@timmmooney : Do you know what it takes to fix f_xdrlib.py?

[prjemian]

https://docs.python.org/3/library/xdrlib.html

[prjemian]

Alternative is xdrlib3

A forked version of xdrlib, a module for encoding and decoding XDR (External Data Representation) data in Python. xdrlib is planned to be removed in Python 3.13 and later versions, therefore this fork has been created to add type hints and maintain compatibility with future versions of Python.

[prjemian]

Conda and PyPI package alternatives for xdrlib:

• standard-xdrlib
  • https://pypi.org/project/standard-xdrlib/
• xdrlib3
  • https://pypi.org/project/xdrlib3/
• mda-xdrlib
  • https://anaconda.org/conda-forge/mda-xdrlib
  • https://pypi.org/project/mda-xdrlib/
• py-xdrlib
  • https://pypi.org/project/py-xdrlib/

There may be others. But only one in conda-forge.

(test) prjemian@arf:~/.../BCDA-APS/mdaviz$ conda search xdrlib
Loading channels: done
No match found for: xdrlib. Search: *xdrlib*
# Name                       Version           Build  Channel             
mda-xdrlib                     0.2.0    pyhd8ed1ab_0  conda-forge