def query_df(data, col_name, col_value):
    """
    Create a new subset of a given DataFrame() by querying it.

    Parameters:
        - data: The base DataFrame().
        - col_name: The name of the column.
        - col_vale: The values to match in that column.

    Returns:
        A DataFrame() object.
    """
    return data.query(f'{col_name} == "{col_value}"')