Question: what is this error means? In [74]: df_train = df_train_original (cols_train).copy df_test = TypeError df_test_original (cols_test).copy in ---> 1 df_train I Traceback (most recent call

what is this error means?
In [74]: df_train = df_train_original (cols_train).copy df_test = TypeError df_test_original (cols_test).copy in

In [74]: df_train = df_train_original (cols_train).copy df_test = TypeError df_test_original (cols_test).copy in ---> 1 df_train I Traceback (most recent call las- df_train_original (cols_train) 2 df_test =df_test_original (cols_test) TypeError: 'DataFrame' object is not callable

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