import re


def identify_hypers(df_fit):
    """Identify hyperparameters.

    Arguments:
        df_fit: A pd.DataFrame of model fit data.

    Returns:
        hypers: A list of strings.

    """
    hypers = []
    for col_name in list(df_fit.columns):
        if re.match(r'hyp_*.', col_name):
            hypers.append(col_name)
    return hypers