unit8co/darts

Improve error message when future covariates are missing during backtest() call

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#2,846 建立於 2025年7月18日

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 (4 留言) (0 反應) (0 負責人)Python (6,832 star) (762 fork)batch import
good first issueimprovement

描述

Is your feature request related to a current problem? Please describe. Yes.When using backtest() with a model trained with train and val future covariates, forgetting to pass the full future covariates again at backtest time results in an error (IndexError: index 1 is out of bounds for axis 0 with size 1.).

Describe proposed solution A better explanation or error message should be thrown as it is the case for "regular" historical forecasts.

Additional context Error currently thrown :

IndexError: index 1 is out of bounds for axis 0 with size 1.

貢獻者指南

技術棧
python
領域
data
議題類型
feature
難度面向新貢獻者的預計實作難度，1 表示很小改動，5 表示專家級工作。
2
預計時間有經驗貢獻者完成調查、實作、測試並準備 pull request 的粗略時間範圍。
1-3 hours
活動狀態議題目前的可參與程度：新鮮、活躍、陳舊、阻塞或等待維護者輸入。
fresh
清晰度議題是否清楚說明預期改動、驗收標準和下一步。
clear
前置要求
Knowledge of PythonFamiliarity with darts backtest function
新手友善度1-100 的估計分數，表示該議題對首次貢獻者的友善程度。
75
研究方向
The error occurs in the backtest() function when future covariates are missing. Developers should locate the backtest() method in the darts library's source code and add a validation check for future covariates before the current error is raised. A clear error message should be provided, similar to the one for historical forecasts. Check the existing comments on the issue for any additional context or maintainer guidance.