Lintian tag information: test-leaves-python-version-untested (type: warning)

Description (from lintian-explain-tags)

The named autopkgtest declares python3-all or an equivalent as a runtime
prerequisite but the test script does not query the supported Python
versions with py3versions --supported.

The test may pass with the standard Python version but could fail in the
future with a Python version that is already available now.

It is best to run tests for all Python versions supported by the target
system.

Visibility: warning
Show-Always: no
Check: testsuite

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