The core difference is about who holds responsibility for the reference during a function call:
1. Python-to-Python Calls (Reference Move)
When Python code calls a Python function through the bytecode interpreter:
| import sys | |
| from typing import Self, cast | |
| import dataclasses | |
| @dataclasses.dataclass(slots=False) | |
| class Node: | |
| _parent: Self | None | |
| MessagePump = Node | |
| DOMNode = Node |
| import sys | |
| from typing import Self, cast | |
| import dataclasses | |
| @dataclasses.dataclass(slots=False) | |
| class Node: | |
| _parent: Self | None | |
| MessagePump = Node | |
| DOMNode = Node |
| import sys | |
| from typing import Self, cast | |
| import dataclasses | |
| @dataclasses.dataclass(slots=False) | |
| class Node: | |
| _parent: Self | None | |
| MessagePump = Node | |
| DOMNode = Node |
| """Middleware.""" | |
| from __future__ import annotations | |
| import logging | |
| import pathlib | |
| from django.conf import settings | |
| from whitenoise.middleware import WhiteNoiseMiddleware # type: ignore[import-untyped] |
| import socket | |
| import asyncio | |
| import selectors | |
| async def wait_readable(s): | |
| event = asyncio.Event() | |
| loop = asyncio.get_running_loop() | |
| loop.add_reader(s, event.set) | |
| try: |
| import anyio | |
| import socket | |
| async def demo(): | |
| s1, s2 = socket.socketpair() | |
| with s1, s2: | |
| s1.setblocking(False) | |
| s2.setblocking(False) | |
| async with anyio.create_task_group() as tg: |
| import anyio.streams.buffered | |
| import anyio.abc | |
| import socket | |
| import functools | |
| async def pipe(reader, writer): | |
| raw_socket = reader.extra_attributes[anyio.abc.SocketAttribute.raw_socket]() | |
| try: | |
| while True: |
| from __future__ import annotations | |
| import dataclasses | |
| import math | |
| from collections.abc import Callable, Coroutine, Generator | |
| from typing import TYPE_CHECKING | |
| import trio.lowlevel | |
| from typing_extensions import ParamSpec, Self, TypeVar, overload |
| WARNING: This command is only meant for debugging. Do not use this with automation for parsing and getting these details, since the output and options of this command may change without notice. | |
| pip version: pip 24.2 from C:\hostedtoolcache\windows\PyPy\3.10.14\x86\lib\site-packages\pip (python 3.10) | |
| sys.version: 3.10.14 (39dc8d3c85a7, Aug 27 2024, 14:33:33) | |
| [PyPy 7.3.17 with MSC v.1929 64 bit (AMD64)] | |
| sys.executable: C:\hostedtoolcache\windows\PyPy\3.10.14\x86\python.exe | |
| sys.getdefaultencoding: utf-8 | |
| sys.getfilesystemencoding: utf-8 | |
| locale.getpreferredencoding: UTF-8 | |
| sys.platform: win32 | |
| sys.implementation: |