def get_obj_cols(df):
    """
    Returns names of 'object' columns in the DataFrame.
    """
    obj_cols = []
    for idx, dt in enumerate(df.dtypes):
        if dt == 'object' or is_category(dt):
            obj_cols.append(df.columns.values[idx])

    return obj_cols
def get_obj_cols(df):
    """
    Returns names of 'object' columns in the DataFrame.
    """
    obj_cols = []
    for idx, dt in enumerate(df.dtypes):
        if dt == 'object' or is_category(dt):
            obj_cols.append(df.columns.values[idx])

    return obj_cols
Returns names of 'object' columns in the DataFrame.