explicitly converted error message to string

tagomatech · web-flow · commit ffd18e28b344 · 2017-10-29T12:27:09.000+01:00
diff --git a/boruta/boruta_py.py b/boruta/boruta_py.py
@@ -380,7 +380,7 @@ def _get_imp(self, X, y):
             self.estimator.fit(X, y)
         except Exception as e:
             raise ValueError('Please check your X and y variable. The provided'
-                             'estimator cannot be fitted to your data.\n' + e)
+                             'estimator cannot be fitted to your data.\n' + str(e))
         try:
             imp = self.estimator.feature_importances_
         except Exception:
