python - 如何在键值对中找到小于指定阈值的通用键

这是我解决此问题的方法：

1. 根据50％的阈值提取所有密钥
2. 将所有提取的键合并到一个元组中
3. 提取所有重复的字母（即导致值小于阈值的字母）。Set()

def get_my_data(dictionary, threshold):
    if 0 <= threshold <= 100:
        threshold = (max([value for value in dictionary.values()])) * (threshold/100) # Sets threshold value from dictionary values
        merged_keys = ()
        for key, value in dictionary.items():
            if value < threshold:
                merged_keys += key
        return set(letter for letter in merged_keys if merged_keys.count(letter) > 1)
    else:
        return f"Invalid threshold value: {threshold}, please enter a value between 0 to 100."


your_dictionary = {('a', 'b'): 2, ('b', 'c'): 4, ('c', 'd'): 6, ('d', 'e'): 8, ('e', 'f'): 8, ('f', 'g'): 3,
                   ('g', 'h'): 2, ('h', 'i'): 7, ('i', 'j'): 10}
result = get_my_data(your_dictionary, 50)
print(result)

输出量

{'g', 'b'}