feature-engine/feature_engine

Provides 70+ specialized transformers for imputation, encoding, discretization, outlier handling, variable transformation, and feature selection—each following sklearn's fit/transform API for seamless pipeline integration. Covers domain-specific engineering including datetime extraction, text feature generation, lag/window features for time series, and statistical selection methods like mutual information and PSI-based filtering. Handles end-to-end preprocessing workflows from missing data to feature creation and elimination across tabular, temporal, and text data.

2,211 stars and 334,479 monthly downloads. Used by 3 other packages. Actively maintained with 1 commit in the last 30 days. Available on PyPI.