added python doc string for nthreads to dmatrix (#3363)

2018-06-07 19:16:30 -07:00 · 2018-06-07 19:16:30 -07:00 · 902ecbade8
commit 902ecbade8
parent a96039141a
1 changed files with 3 additions and 0 deletions
--- a/python-package/xgboost/core.py
+++ b/python-package/xgboost/core.py
@ -254,6 +254,9 @@ class DMatrix(object):
            Set names for features.
        feature_types : list, optional
            Set types for features.
+        nthread : integer, optional
+            Number of threads to use for loading data from numpy array. If -1,
+            uses maximum threads available on the system.
        """
        # force into void_p, mac need to pass things in as void_p
        if data is None: