asyncio REPL: Use `self.loop` instead of global `loop` variable in `AsyncIOInteractiveConsole`

[injust]

I'm trying to extend the asyncio REPL (yes, I know this is an unsupported use case) by doing the following:

• from asyncio.__main__ import AsyncIOInteractiveConsole
• Copy the if __name__ == '__main__' block into my own __main__.py
• Copy and edit REPLThread (subclassing isn't possible because it also refers to global variables)

However, this doesn't work because AsyncIOInteractiveConsole refers to asyncio.__main__'s global loop variable, despite it being passed and assigned to the instance attribute self.loop.

https://github.com/python/cpython/blob/3.13/Lib/asyncio/__main__.py#L65

I see no reason why AsyncIOInteractiveConsole shouldn't use self.loop consistently.

Linked PRs

• gh-136447: Use self.loop instead of global loop variable in asyncio REPL #136448
• [3.13] gh-136447: Use self.loop instead of global loop variable in asyncio REPL (GH-136448) #136457
• [3.14] gh-136447: Use self.loop instead of global loop variable in asyncio REPL (GH-136448) #136458

[injust]

Traceback (most recent call last):
  File "/usr/local/Cellar/python@3.13/3.13.5/Frameworks/Python.framework/Versions/3.13/lib/python3.13/threading.py", line 1043, in _bootstrap_inner
    self.run()
    ~~~~~~~~^^
  File "/[...]/foo.py", line 53, in run
    console.runsource(command)
    ~~~~~~~~~~~~~~~~~^^^^^^^^^
  File "/usr/local/Cellar/python@3.13/3.13.5/Frameworks/Python.framework/Versions/3.13/lib/python3.13/_pyrepl/console.py", line 226, in runsource
    result = self.runcode(code)
  File "/usr/local/Cellar/python@3.13/3.13.5/Frameworks/Python.framework/Versions/3.13/lib/python3.13/asyncio/__main__.py", line 63, in runcode
    loop.call_soon_threadsafe(callback, context=self.context)
    ^^^^
NameError: name 'loop' is not defined. Did you mean: 'self.loop'?

[kumaraditya303]

I merged it as it was a small change but do note that the API is private and can change in future, there is no backwards compatibility for repl.