gh-111201: Remove readline dependency from the PyREPL (#119262)

Lib/_pyrepl/readline.py

@@ -31,9 +31,9 @@ from __future__ import annotations
 from dataclasses import dataclass, field
 
 import os
-import readline
 from site import gethistoryfile   # type: ignore[attr-defined]
 import sys
+from rlcompleter import Completer as RLCompleter
 
 from . import commands, historical_reader
 from .completing_reader import CompletingReader
@@ -84,7 +84,7 @@ __all__ = [
 
 @dataclass
 class ReadlineConfig:
-    readline_completer: Completer | None = readline.get_completer()
+    readline_completer: Completer | None = RLCompleter().complete
     completer_delims: frozenset[str] = frozenset(" \t\n`~!@#$%^&*()-=+[{]}\\|;:'\",<>/?")
 
 

Lib/test/test_pyrepl/__init__.py

@@ -7,7 +7,6 @@ from test.support.import_helper import import_module
 # option.  Additionally, we need to attempt to import curses and readline.
 requires("curses")
 curses = import_module("curses")
-readline = import_module("readline")
 
 
 def load_tests(*args):

Misc/NEWS.d/next/Library/2024-05-20-20-30-57.gh-issue-111201.DAA5lC.rst

@@ -0,0 +1 @@
+Remove dependency to :mod:`readline` from the new Python REPL.