Update feature_selectors.py

fix copy bug

mastml/feature_selectors.py

@@ -34,7 +34,6 @@
 
 """
 
-import copy
 import os
 import warnings
 import shap
@@ -555,8 +554,8 @@ def fit(self, X, y):
 
             #### Print the removed features and the new smaller dataframe with features removed
             # Deep copy the original dataframe
-            removed_features_df = copy.deepcopy(X)
-            new_df = copy.deepcopy(X)
+            removed_features_df = copy(X)
+            new_df = copy(X)
 
             # Drop the features that can be removed
             all_features = list(new_df.columns)
@@ -910,4 +909,4 @@ def selected_features_correlation(X, savepath, features_x_path, features_y_path)
 
     with open(os.path.join(savepath, 'same_features.txt'), 'w') as f:
         for feature in same_features:
-            f.write(str(feature) + '\n')
+            f.write(str(feature) + '\n')