stats
OLSInfluence.
influence
(cached attribute) influence measure
matches the influence measure that gretl reports u * h / (1 - h) where u are the residuals and h is the diagonal of the hat_matrix
statsmodels.stats.outliers_influence.OLSInfluence.hat_matrix_diag
statsmodels.stats.outliers_influence.OLSInfluence.params_not_obsi