https://github.com/python/cpython/commit/c31547a5914db93b8b38c6a5261ef716255f3582
commit: c31547a5914db93b8b38c6a5261ef716255f3582
branch: main
author: Kirill Podoprigora <kirill.ba...@mail.ru>
committer: ambv <luk...@langa.pl>
date: 2025-05-19T15:30:43+02:00
summary:
gh-134097: Print number of refs & blocks after each statement in new REPL
(gh-134136)
Co-authored-by: Łukasz Langa <luk...@langa.pl>
files:
A Misc/NEWS.d/next/Library/2025-05-17-13-46-20.gh-issue-134097.fgkjE1.rst
M Lib/_pyrepl/simple_interact.py
M Lib/test/test_pyrepl/test_pyrepl.py
diff --git a/Lib/_pyrepl/simple_interact.py b/Lib/_pyrepl/simple_interact.py
index b3848833e14208..c23894a34b8b53 100644
--- a/Lib/_pyrepl/simple_interact.py
+++ b/Lib/_pyrepl/simple_interact.py
@@ -110,6 +110,10 @@ def run_multiline_interactive_console(
more_lines = functools.partial(_more_lines, console)
input_n = 0
+ _is_x_showrefcount_set = sys._xoptions.get("showrefcount")
+ _is_pydebug_build = hasattr(sys, "gettotalrefcount")
+ show_ref_count = _is_x_showrefcount_set and _is_pydebug_build
+
def maybe_run_command(statement: str) -> bool:
statement = statement.strip()
if statement in console.locals or statement not in REPL_COMMANDS:
@@ -167,3 +171,8 @@ def maybe_run_command(statement: str) -> bool:
except:
console.showtraceback()
console.resetbuffer()
+ if show_ref_count:
+ console.write(
+ f"[{sys.gettotalrefcount()} refs,"
+ f" {sys.getallocatedblocks()} blocks]\n"
+ )
diff --git a/Lib/test/test_pyrepl/test_pyrepl.py
b/Lib/test/test_pyrepl/test_pyrepl.py
index fc8114891d12dd..f80755b3368f8f 100644
--- a/Lib/test/test_pyrepl/test_pyrepl.py
+++ b/Lib/test/test_pyrepl/test_pyrepl.py
@@ -10,7 +10,7 @@
import tempfile
from unittest import TestCase, skipUnless, skipIf
from unittest.mock import patch
-from test.support import force_not_colorized, make_clean_env
+from test.support import force_not_colorized, make_clean_env, Py_DEBUG
from test.support import SHORT_TIMEOUT, STDLIB_DIR
from test.support.import_helper import import_module
from test.support.os_helper import EnvironmentVarGuard, unlink
@@ -1610,3 +1610,16 @@ def test_prompt_after_help(self):
# Extra stuff (newline and `exit` rewrites) are necessary
# because of how run_repl works.
self.assertNotIn(">>> \n>>> >>>", cleaned_output)
+
+ @skipUnless(Py_DEBUG, '-X showrefcount requires a Python debug build')
+ def test_showrefcount(self):
+ env = os.environ.copy()
+ env.pop("PYTHON_BASIC_REPL", "")
+ output, _ = self.run_repl("1\n1+2\nexit()\n",
cmdline_args=['-Xshowrefcount'], env=env)
+ matches = re.findall(r'\[-?\d+ refs, \d+ blocks\]', output)
+ self.assertEqual(len(matches), 3)
+
+ env["PYTHON_BASIC_REPL"] = "1"
+ output, _ = self.run_repl("1\n1+2\nexit()\n",
cmdline_args=['-Xshowrefcount'], env=env)
+ matches = re.findall(r'\[-?\d+ refs, \d+ blocks\]', output)
+ self.assertEqual(len(matches), 3)
diff --git
a/Misc/NEWS.d/next/Library/2025-05-17-13-46-20.gh-issue-134097.fgkjE1.rst
b/Misc/NEWS.d/next/Library/2025-05-17-13-46-20.gh-issue-134097.fgkjE1.rst
new file mode 100644
index 00000000000000..0b388d9db380f5
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2025-05-17-13-46-20.gh-issue-134097.fgkjE1.rst
@@ -0,0 +1 @@
+Fix interaction of the new :term:`REPL` and :option:`-X showrefcount <-X>`
command line option.
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