_pyrepl.readline._ReadlineWrapper.get_line_buffer should return a `str`, not a `bytes` object

[cfbolz]

Bug report

Bug description:

_pyrepl.readline._ReadlineWrapper.get_line_buffer should return a str, not a bytes object, because readline.get_line_buffer also returns an str, not a bytes.

this has very little effect in CPython, but in PyPy it causes various problem, because we don't have a readline module at all, and use _pyrepl.readline instead.

I'm working on a PR.

CPython versions tested on:

3.13, CPython main branch

Operating systems tested on:

No response

Linked PRs

• gh-123228: fix return type for _ReadlineWrapper.get_line_buffer() #123281
• [3.13] gh-123228: fix return type for _ReadlineWrapper.get_line_buffer() (GH-123281) #123293
• gh-123228: don't leak file descriptors in pyrepl test #123302
• [3.13] gh-123228: don't leak file descriptors in pyrepl test (GH-123302) #123313

[skirpichev]

I took liberty to post a pr: #123281

[cfbolz]

this is now fixed, thanks everyone!

[cfbolz]

Ouch, there's a leaking file descriptor in the new test: #123281 (comment)
I know where, can fix it.