changed returns desc
@@ -5477,6 +5477,7 @@ def cv(pool=None, params=None, dtrain=None, iterations=None, num_boost_round=Non
-------
cv results : pandas.core.frame.DataFrame with cross-validation results
columns are: test-error-mean test-error-std train-error-mean train-error-std
+ cv models : list of trained models, if return_models=True
"""
if params is None:
raise CatBoostError("params should be set.")
