# skfolio.utils.tools.get_feature_names ### skfolio.utils.tools.get_feature_names(X) Get feature names from X. Support for other array containers should place its implementation here. * **Parameters:** **X** *{ndarray, dataframe} of shape (n_samples, n_features)* : Array container to extract feature names. - pandas dataframe : The columns will be considered to be feature names. If the dataframe contains non-string feature names, `None` is returned. - All other array containers will return `None`. * **Returns:** names: ndarray or None : Feature names of `X`. Unrecognized array containers will return `None`.