Reapplied lost fix for BaseNEncoder

Author: florian

category_encoders/basen.py

@@ -349,21 +349,20 @@ def basen_to_integer(self, X, cols, base):
         -------
         numerical: DataFrame
         """
-        out_cols = X.columns.values
+        out_cols = X.columns.values.tolist()
 
         for col in cols:
             col_list = [col0 for col0 in out_cols if str(col0).startswith(str(col))]
+            insert_at = out_cols.index(col_list[0])
 
             if base == 1:
                 value_array = np.array([int(col0.split('_')[-1]) for col0 in col_list])
             else:
                 len0 = len(col_list)
                 value_array = np.array([base ** (len0 - 1 - i) for i in range(len0)])
-
-            X[col] = np.dot(X[col_list].values, value_array.T)
-            out_cols = [col0 for col0 in out_cols if col0 not in col_list]
-
-        X = X.reindex(columns=out_cols + cols)
+            X.insert(insert_at,col,np.dot(X[col_list].values, value_array.T))
+            X.drop(col_list, axis=1, inplace=True)
+            out_cols = X.columns.values.tolist()
 
         return X