扁平化字符串和字典的字典

def flatten_dict(d, parent_key='', sep='_'):
    items = []
    for k, v in d.items():
        new_key = f"{parent_key}{sep}{k}" if parent_key else k
        if isinstance(v, dict):
            items.extend(flatten_dict(v, new_key, sep=sep).items())
        else:
            items.append((new_key, v))
    return dict(items)

# 示例嵌套字典
nested_dict = {
    'a': 1,
    'b': {
        'c': 2,
        'd': {
            'e': 3
        }
    },
    'f': 4
}

# 扁平化处理
flattened_dict = flatten_dict(nested_dict)
print(flattened_dict)

{'a': 1, 'b_c': 2, 'b_d_e': 3, 'f': 4}

def flatten_dict_unique(d, parent_key='', sep='_', seen=None):
    if seen is None:
        seen = set()
    items = []
    for k, v in d.items():
        new_key = f"{parent_key}{sep}{k}" if parent_key else k
        if new_key in seen:
            new_key += sep + str(id(v))  # 添加唯一标识
        seen.add(new_key)
        if isinstance(v, dict):
            items.extend(flatten_dict_unique(v, new_key, sep=sep, seen=seen).items())
        else:
            items.append((new_key, v))
    return dict(items)

# 使用示例
flattened_dict_unique = flatten_dict_unique(nested_dict)
print(flattened_dict_unique)