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dmlc · May 21, 2020 · f44be01 · f44be01
1 parent 6d3b35d
commit f44be01
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Showing 2 changed files with 4 additions and 3 deletions.
diff --git a/python-package/xgboost/core.py b/python-package/xgboost/core.py
@@ -270,7 +270,8 @@ def _convert_unknown_data(data, meta=None, meta_type=None):
     else:
         import warnings
         warnings.warn(
-            f'Unknown data type {type(data)}, coverting it to csr_matrix')
+            'Unknown data type: ' + str(type(data)) +
+            ', coverting it to csr_matrix')
         try:
             data = scipy.sparse.csr_matrix(data)
         except Exception:

diff --git a/python-package/xgboost/data.py b/python-package/xgboost/data.py
@@ -532,8 +532,8 @@ def get_device_quantile_dmatrix_data_handler(
     '''
     handler = __device_quantile_dmatrix_registry.get_handler(
         data)
-    assert handler, f'Current data type {type(data)} is not supported' + \
-        ' for DeviceQuantileDMatrix'
+    assert handler, 'Current data type ' + str(type(data)) +\
+        ' is not supported for DeviceQuantileDMatrix'
     return handler(max_bin, missing, nthread, silent)