[python] removed excess condition (#2385)

microsoft · Sep 7, 2019 · de1f3cb · de1f3cb
1 parent 22cd39e
commit de1f3cb
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/python-package/lightgbm/basic.py b/python-package/lightgbm/basic.py
@@ -202,7 +202,7 @@ class LightGBMError(Exception):
 
 def convert_from_sliced_object(data):
     """Fix the memory of multi-dimensional sliced object."""
-    if data.base is not None and isinstance(data, np.ndarray) and isinstance(data.base, np.ndarray):
+    if isinstance(data, np.ndarray) and isinstance(data.base, np.ndarray):
         if not data.flags.c_contiguous:
             warnings.warn("Usage of np.ndarray subset (sliced data) is not recommended "
                           "due to it will double the peak memory cost in LightGBM.")