tsa.vector_ar
method
VARResults.
tvalues
Compute t-statistics. Use Student-t(T - Kp - 1) = t(df_resid) to test significance.
statsmodels.tsa.vector_ar.var_model.VARResults.to_vecm
statsmodels.tsa.vector_ar.var_model.VARResults.tvalues_dt