preprocessing.load_lags.LoadLagError

preprocessing.load_lags.LoadLagError()

A lagged-load exog source could not be built NaN-free over the window.

Raised when the requested source (target total, per-zone loads, or zone shares) cannot supply a value for every requested timestamp after the leading warm-up backfill, when the forecast-horizon slice contains NaN, or when the source series is stale (its last observation lags data_end by more than max_staleness_hours). multitask.base.build_exogenous_features translates this into either a hard failure or a skipped feature block, governed by ConfigMulti.on_load_lag_failure.

Examples

from spotforecast2_safe.preprocessing.load_lags import LoadLagError

try:
    raise LoadLagError("load_lags: source stale.")
except LoadLagError as exc:
    print(type(exc).__name__, str(exc))
assert issubclass(LoadLagError, Exception)

LoadLagError load_lags: source stale.