Python：如何显示嵌套类型信息？

Question

Python是否包含一个内置的类型变量，它将显示嵌套的类型信息，比如这样

>>> extended_type([()])
<class 'list' containg <class 'tuple'>>

Answer 1

@Aplet123激励着我

from typing import List
import json


def extended_type(obj, buffer_list: List = None):
    if buffer_list is None:
        buffer_list = []
    buffer_list.append(f"<class '{type(obj).__name__}'>")
    if hasattr(obj, '__iter__') and not isinstance(obj, str):
        sub_buf = []
        for item in (obj.values() if isinstance(obj, dict) else obj):
            extended_type(item, sub_buf)
        if sub_buf:
            buffer_list.append(sub_buf)
    return buffer_list

试验

def my_func():
    ...


class CC:
    ...


data_type_info: List = extended_type([(1, 'a'),
                                      [1, [2, '5', [2, 'a', CC()]]],
                                      {'a': 0, 1: 2, 'b': 's', 'l': [3, 'four']},
                                      my_func])

result: str = json.dumps(data_type_info, indent=2, sort_keys=True)
print(result)

输出

[
    "<class 'list'>",
    [
        "<class 'tuple'>",
        [
            "<class 'int'>",
            "<class 'str'>"
        ],
        "<class 'list'>",
        [
            "<class 'int'>",
            "<class 'list'>",
            [
                "<class 'int'>",
                "<class 'str'>",
                "<class 'list'>",
                [
                    "<class 'int'>",
                    "<class 'str'>",
                    "<class 'CC'>"
                ]
            ]
        ],
        "<class 'dict'>",
        [
            "<class 'int'>",
            "<class 'int'>",
            "<class 'str'>",
            "<class 'list'>",
            [
                "<class 'int'>",
                "<class 'str'>"
            ]
        ],
        "<class 'function'>"
    ]
]