Python 3.8:搜索嵌套列表和字典有困难

def search_nested(data, target):
    if isinstance(data, list):
        for item in data:
            if search_nested(item, target):
                return True
    elif isinstance(data, dict):
        for key, value in data.items():
            if search_nested(value, target):
                return True
    else:
        if data == target:
            return True
    return False

# 示例用法
data = [1, 2, [3, 4, [5, 6]], 7, {'a': 8, 'b': [9, 10]}]
target = 6
result = search_nested(data, target)
print(result)  # 输出：True

def search_nested(data, target):
    stack = [data]
    while stack:
        item = stack.pop()
        if item == target:
            return True
        elif isinstance(item, list):
            stack.extend(item)
        elif isinstance(item, dict):
            stack.extend(item.values())
    return False

# 示例用法
data = [1, 2, [3, 4, [5, 6]], 7, {'a': 8, 'b': [9, 10]}]
target = 6
result = search_nested(data, target)
print(result)  # 输出：True