如何在Python中描述蛋白质序列的疏水性？

hydrophobicity_index = {
    'A': 1.8,
    'R': -4.5,
    'N': -3.5,
    'D': -3.5,
    'C': 2.5,
    'Q': -3.5,
    'E': -3.5,
    'G': -0.4,
    'H': -3.2,
    'I': 4.5,
    'L': 3.8,
    'K': -3.9,
    'M': 1.9,
    'F': 2.8,
    'P': -1.6,
    'S': -0.8,
    'T': -0.7,
    'W': -0.9,
    'Y': -1.3,
    'V': 4.2
}

protein_sequence = 'ARNDCEQGHILKMFPSTWYV'
hydrophobicity_score = sum(hydrophobicity_index[aa] for aa in protein_sequence)
print("蛋白质序列的疏水性得分为:", hydrophobicity_score)