Release 1.2.0

Features Added

• Added checking for additional input after the data block, and raising a warning if it exists (#525).
• Allow multiple universe fills to accept 2D MNCP lattices (#719).
• Make LatticeType.RECTANGULAR and LatticeType.HEXAHEDRAL synonymous (#808).
• Allow setting cell.fill.universes with a numpy array of universe IDs (#736).

Performance Improvement

• Optimized $\mathcal{O}(N^2)$ scaling in montepy.NumberedObjectCollection.request_number by improving NumberedObjectCollection.check_number to $\mathcal{O}(N)$ (#786).

Bugs Fixed

• Fixed bug where lines that were the allowed length was raising a LineOverRunWarning when read by MontePy (#517).
• Added descriptive TypeError messages (#801)
• Fixed a bug that caused to write an extra termination line between the data block and the cell data section in the MCNP input. (#819) (#703).

Documentation

Added a web browser instance of jupyter to the website allowing testing out MontePy with no python installed locally (#796).

• Improved documentation for NumberedObjectCollection on Slicing behavior. (#798)
• Reorganized Python API documentation. Some hyperlinks may be broken now (#828).

Deprecations

• Dropped support for python 3.9 through 3.11, and numpy 1.26 in order to comply with SPEC 0 (#780).

Contributors

• @digvijay-y
• @kordusas
• @tjlaboss
• @Kaos599
• @MicahGale

What's Changed

• adopt spec 0 by @MicahGale in #781
• Drop numpy 1.26 and Python 3.11 by @MicahGale in #807
• Feature: Set cell.fill.universes with an array of IDs by @digvijay-y in #815
• Add support for python 3.14, and drop prior to 3.12 by @MicahGale in #820
• Rename hex by @tjlaboss in #822
• Remove python 3.9 dead code by @MicahGale in #824
• Stage release 1.2.0 by @MicahGale in #823
• Fixed how API docs are generated by @MicahGale in #828
• Add: boundary condition type to repr for surfaces by @digvijay-y in #831
• Make multiple universe fills accept < 3 dimensions by @digvijay-y in #835
• Update ipykernel requirement from ~=6.0 to >=6,<8 by @dependabot[bot] in #836
• Feature/525 detect empty lines by @kordusas in #819
• Bump actions/download-artifact from 5 to 6 by @dependabot[bot] in #840
• Bump actions/upload-artifact from 4 to 5 by @dependabot[bot] in #839
• Bump sigstore/gh-action-sigstore-python from f909491f27c345faa936da468c9ddfac57cbeb49 to 27dac9cce16c9883a0d4b51c9e0a520102d68016 by @dependabot[bot] in #838
• Improve NumberedObjectCollection.check_number by @digvijay-y in #841
• Update default importance values to 1.0 in Importance class and tests by @Kaos599 in #830
• Temporarily fixed parsing error with FMESH by @MicahGale in #850
• Used semi-emperical mass formula to avoid testing with ridiculous nuclides by @MicahGale in #851
• Added Jupyter Lite to Website for in browser python. by @MicahGale in #843
• Stage release 1.2.0 by @MicahGale in #845

New Contributors

• @Kaos599 made their first contribution in #830

Full Changelog: v1.1.3...v1.2.0