迭代N个嵌套列表和字典

def recursive_iterate(data):
    if isinstance(data, dict):
        for key, value in data.items():
            print(f"Key: {key}")
            recursive_iterate(value)
    elif isinstance(data, list):
        for item in data:
            recursive_iterate(item)
    else:
        print(f"Value: {data}")

# 示例数据
nested_data = {
    "a": [1, 2, {"b": 3}],
    "c": {"d": [4, 5], "e": 6}
}

recursive_iterate(nested_data)

def iterative_iterate(data):
    stack = [data]
    while stack:
        current = stack.pop()
        if isinstance(current, dict):
            for key, value in current.items():
                print(f"Key: {key}")
                stack.append(value)
        elif isinstance(current, list):
            for item in current:
                stack.append(item)
        else:
            print(f"Value: {current}")

iterative_iterate(nested_data)

def safe_recursive_iterate(data, visited=None):
    if visited is None:
        visited = set()
    if id(data) in visited:
        print("Circular reference detected")
        return
    visited.add(id(data))

    if isinstance(data, dict):
        for key, value in data.items():
            print(f"Key: {key}")
            safe_recursive_iterate(value, visited)
    elif isinstance(data, list):
        for item in data:
            safe_recursive_iterate(item, visited)
    else:
        print(f"Value: {data}")

safe_recursive_iterate(nested_data)