Rewrite of Virtual Environment Episode using PDM

[bielsnohr]

This is a complete draft of changes to 1.2 Virtual Environment using PDM instead of the current pip + venv. This does not yet look at what the ripple effects would be across the rest of the lesson, which is why this merge would be into the dev branch, after which the other work on updating the remainder of the lesson would take place. This is solely to assess what a PDM-based lesson would look like.

[github-actions]

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If you have files that automatically render output (e.g. R Markdown), then you should check for the following:

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Rendered Changes

🔍 Inspect the changes: https://github.com/carpentries-incubator/python-intermediate-development/compare/md-outputs..md-outputs-PR-539

The following changes were observed in the rendered markdown documents:

 12-virtual-environments.md                   | 638 ++++++++++++---------------
 20-section2-intro.md                         |   4 +-
 22-scaling-up-unit-testing.md                |  22 +-
 24-diagnosing-issues-improving-robustness.md |   8 +-
 functional-programming.md                    |   2 +-
 index.md                                     |   2 +-
 md5sum.txt                                   |  20 +-
 object-oriented-programming.md               |   2 +-
 paper.md                                     |   2 +-
 section_2_ensuring_correctness.md            |   8 +-
 setup.md                                     |   1 +
 11 files changed, 309 insertions(+), 400 deletions(-)

What does this mean?

If you have source files that require output and figures to be generated (e.g. R Markdown), then it is important to make sure the generated figures and output are reproducible.

This output provides a way for you to inspect the output in a diff-friendly manner so that it's easy to see the changes that occur due to new software versions or randomisation.

⏱️ Updated at 2026-09-03 16:13:09 +0000