Changelog#

Notable changes to this project are documented below.

The format is based on Keep a Changelog, and this project adheres to Semantic Versioning.

Unreleased #

Updated variable array access and other improvements.

tecio.ZoneList / tecio.VariableList container types for Read.zone and ReadZone.variable, with slicing and exact-name lookup.
ReadZone.get_array(key) for direct array access by index, name, or list of names.
tec2mat command line tool to convert input Tecplot file to MATLAB compatible .mat file format. Importable as a MATLAB structure with all zones, variables, and metadata.

Read.zone / ReadZone.variable now return ZoneList / VariableList instead of plain list.
Read tests rewritten to match writer-test conventions (fixtures, pytest.raises, class grouping).

Legacy style unstructured zone headers in ASCII files use different keywords for data packing and zone type resulting in tecio interpreting these as single point ordered zone. These special cases have been added.

Breaking: attribute-style variable access (zone.x) — was broken (infinite recursion) on SZL and case-insensitive on PLT. Use zone.get_array("x") instead.

First stable release of tecio-python.

tecio.open() unified entry point supporting r, w, x, a, and a+ modes across all three file formats
SZL (.szplt) read and write via the TecIO C library new API
PLT (.plt) binary read via a pure-Python parser and write via the classic TecIO API
DAT (.dat / .tec) ASCII read and write with BLOCK and POINT datapacking support
Support for ordered (IJK) and simple finite-element zone types (FELINESEG, FETRIANGLE, FEQUADRILATERAL, FETETRAHEDRON, FEBRICK)
Variable sharing, passive variables, and zone-level auxiliary data
Dataset-level and variable-level auxiliary data read and write
CLI tools: tecdump, tecextract, teconvert, tecscale, tecmerge, tecslice, tecstats, tecfix
GitHub Actions CI with ruff formatting, linting, ty type checking, and pytest
Apache 2.0 license