asyncio REPL is not working on Windows

[lschoe]

Bug report

Bug description:

Running the asyncio REPL with Python 3.13b1 on Windows gives

>py -3.13  -m asyncio
Traceback (most recent call last):
  File "<frozen runpy>", line 198, in _run_module_as_main
  File "<frozen runpy>", line 88, in _run_code
  File "C:\Users\Berry\AppData\Local\Programs\Python\Python313\Lib\asyncio\__main__.py", line 126, in <module>
    readline.set_completer(completer.complete)
    ^^^^^^^^

due to missing readline package.

Easy to fix by removing

cpython/Lib/asyncio/__main__.py

Lines 108 to 111 in 2f4db5a

	try:
	import readline # NoQA
	except ImportError:
	pass

and inserting import readline # NoQA before line 121:

cpython/Lib/asyncio/__main__.py

Lines 120 to 126 in 2f4db5a

	try:
	import rlcompleter
	except:
	pass
	else:
	completer = rlcompleter.Completer(console.locals)
	readline.set_completer(completer.complete)

CPython versions tested on:

3.13

Operating systems tested on:

Windows

Linked PRs

• gh-118817: Fix asyncio REPL on Windows #118819
• [3.13] gh-118817: Fix asyncio REPL on Windows (GH-118819) #118847

[Eclips4]

Thanks for the report!