def METHOD_NAME(shannon_radius):  # Cubic Pervoskite
    """The lattice parameters of the cubic perovskite structure.
    Args:
        shannon_radius (list) : The radii of the a,b,c ions
    Returns:
       (tuple):
           float values of lattics constants and
           angles (a, b, c, alpha, beta, gamma)
    """
    limiting_factors = [2 * sum(shannon_radius[1:])]
    a = max(limiting_factors)
    b = a
    c = a
    #    space = a * np.sqrt(3) - 2 * shannon_radius[1]
    alpha = 90
    beta = 90
    gamma = 90
    return a, b, c, alpha, beta, gamma