New releases (1.1.27, 28, 29, and 30!)

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Christophe Morisset

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Feb 20, 2026, 1:25:53 PMFeb 20
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Dear PyNeb community,

Several new versions of PyNeb have been released over the past few months. Below is a summary of the new features and bug fixes introduced in each release.

Version 1.1.27

  • Fixed a bug affecting ANN usage.

  • Fixed a compatibility issue with recent NumPy versions (a previous fix was unintentionally reverted due to a GitHub misuse).

  • Added support for reading STOUT files.

    • The STOUT directory must be specified through the STOUT_DIR environment variable.

    • The STOUT format is the one used by Cloudy; corresponding atomic data are located in the data/stout directory of Cloudy.

    • Cloudy also relies on data from the CHIANTI database. Users should verify which database is used for each ion. This information can be found in data/stout/masterlist/Stout.ini (see Hazy for details).

Version 1.1.28

Version 1.1.29

  • Corrected minor bugs.

  • Added Full_Pipeline.ipynb to the documentation.

    • This notebook demonstrates how to compute ionic abundances from observations within a single workflow, using Monte Carlo synthetic observations to estimate uncertainties.

  • Updated all other notebooks.

  • Added normwave to Observation.addLine.

  • Converted README.rst to README.md.

Version 1.1.30

  • Added Atom.plotGrotrian2, which produces Grotrian-style diagrams useful for phosphorescence studies and closer in style to the classic Grotrian and Moore representations.

  • Added PyNeb.pdf to the documentation directory.

  • Updated several README files.

Best regards,

The PyNeb team

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