SimulationArgs in gridappsd-python-lib/gridappsd/simulation.py defines a method named __post_init_ (single trailing underscore). The dataclass post-init hook is __post_init__ (double trailing underscore). Because of the typo the method is never invoked by the dataclass machinery, so the intended default-filling logic and the publish_period/interval validation inside it have silently never run. Discovered while fixing the int|None typing for #208 (the fields behave as int|None at runtime precisely because the post-init that would fill/validate them never fires). Likely relevant to the PUBLISH_PERIOD/INTERVAL params added by the timestep work. Fix: rename to post_init, then verify the now-active default-filling and validation do not break existing callers (they pass explicit ints today). Found 2026-07-17.
SimulationArgs in gridappsd-python-lib/gridappsd/simulation.py defines a method named
__post_init_(single trailing underscore). The dataclass post-init hook is__post_init__(double trailing underscore). Because of the typo the method is never invoked by the dataclass machinery, so the intended default-filling logic and the publish_period/interval validation inside it have silently never run. Discovered while fixing the int|None typing for #208 (the fields behave as int|None at runtime precisely because the post-init that would fill/validate them never fires). Likely relevant to the PUBLISH_PERIOD/INTERVAL params added by the timestep work. Fix: rename to post_init, then verify the now-active default-filling and validation do not break existing callers (they pass explicit ints today). Found 2026-07-17.