如何为ngram列表创建频率表

def create_frequency_table(ngram_list):
    frequency_table = {}
    for ngram in ngram_list:
        if ngram in frequency_table:
            frequency_table[ngram] += 1
        else:
            frequency_table[ngram] = 1
    return frequency_table

# 示例用法
ngram_list = ["Hello how", "how are", "are you", "Hello how"]
frequency_table = create_frequency_table(ngram_list)
print(frequency_table)

{'Hello how': 2, 'how are': 1, 'are you': 1}