根据值在字典列表中查找相似项

def find_similar_items(dictionary_list, target_value):
    similar_items = []
    for dictionary in dictionary_list:
        for value in dictionary.values():
            if isinstance(value, str):
                # 使用字符串相似度算法比较字符串的相似性
                similarity = calculate_string_similarity(value, target_value)
                if similarity >= threshold:
                    similar_items.append(dictionary)
                    break
            elif isinstance(value, int) or isinstance(value, float):
                # 比较数值的相似性
                if abs(value - target_value) <= threshold:
                    similar_items.append(dictionary)
                    break
    return similar_items

# 示例数据
dictionary_list = [
    {"name": "John", "age": 25},
    {"name": "Alice", "age": 30},
    {"name": "Bob", "age": 28}
]
target_value = 28
threshold = 2  # 相似性阈值

similar_items = find_similar_items(dictionary_list, target_value)
print(similar_items)