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scikit-learn trading signals for beginners after work (classification toy)

scikit-learn trading-signal toys after work: TimeSeriesSplit classification with leakage controls. Educational only. Not investment advice.

pythonscikit-learnnarwhalspolarsafter-work

scikit-learn 1.9 after work: narwhals is a real dependency

scikit-learn 1.9.0 (2 Jun 2026, jeremiedbb) adds narwhals (>=2.0.1) so pandas and Polars set_output share one path after __dataframe__ deprecation. Experimental callbacks (ProgressBar, ScoringMonitor). Not a LightGBM/XGBoost roundup. Three things to try tonight. Not investment advice.

pythonscikit-learnnarwhalspolarsafter-work

scikit-learn 1.9 after work: narwhals is a real dependency

scikit-learn 1.9.0 (2 Jun 2026, jeremiedbb) adds narwhals (>=2.0.1) so pandas and Polars set_output share one path after __dataframe__ deprecation. Experimental callbacks (ProgressBar, ScoringMonitor). Not a LightGBM/XGBoost roundup. Three things to try tonight. Not investment advice.