urllib3 error under python3.12

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Summary

Duplicity gives the following error when run under Python 3.12:

Attempt of list Nr. 1 failed. ModuleNotFoundError: No module named 'urllib3.packages.six.moves'

Environment

• AlmaLinux 9.4 and MacOS Sonoma
• Python 3.12.1
• Duplicity 3.0.0 from PyPI

Command: duplicity list-current-files boto3+s3://...

Steps to reproduce

• Create a fresh Python virtual environment using Python 3.12
• In that environment:
  • pip install wheel
  • pip install duplicity
  • duplicity list-current-files ...

What is the current bug behaviour?

Generates these messages:

Attempt of list Nr. 1 failed. ModuleNotFoundError: No module named 'urllib3.packages.six.moves'
Attempt of list Nr. 2 failed. ModuleNotFoundError: No module named 'urllib3.packages.six.moves'
Attempt of list Nr. 3 failed. ModuleNotFoundError: No module named 'urllib3.packages.six.moves'
Attempt of list Nr. 4 failed. ModuleNotFoundError: No module named 'urllib3.packages.six.moves'
Giving up after 5 attempts. ModuleNotFoundError: No module named 'urllib3.packages.six.moves'

What is the expected correct behaviour?

No such error messages, and the command completes normally.

Relevant logs and/or screenshots

Possible fixes

Upgrading to urlib3 1.26.5 or higher fixes the issue. (That version updated the vendored six library to 1.16.0.)

I also tested this with Python 3.11. The issue does not occur for that version.

Formatting