如何从Python中的object函数返回嵌套的对象路径？

def get_nested_paths(obj, path=''):
    if not isinstance(obj, object):
        return [path]

    paths = []
    for attr in dir(obj):
        value = getattr(obj, attr)
        if isinstance(value, object):
            nested_paths = get_nested_paths(value, path=path + '.' + attr)
            paths.extend(nested_paths)
        else:
            paths.append(path + '.' + attr)

    return paths

# 使用示例
class Person:
    def __init__(self, name):
        self.name = name

class Address:
    def __init__(self, city, street):
        self.city = city
        self.street = street

class Customer:
    def __init__(self, person, address):
        self.person = person
        self.address = address

person = Person('John')
address = Address('New York', '123 Main St')
customer = Customer(person, address)

paths = get_nested_paths(customer)
for path in paths:
    print(path)

.person
.person.name
.address
.address.city
.address.street