8000 gh-134097: Print number of refs & blocks after each statement in new REPL by Eclips4 · Pull Request #134136 · python/cpython · GitHub
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gh-134097: Print number of refs & blocks after each statement in new REPL #134136

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Merged
merged 4 commits into from
May 19, 2025
Merged

gh-134097: Print number of refs & blocks after each statement in new REPL #134136

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1f6041c
Print refs & blocks info after each statement
Eclips4 May 17, 2025
a2d21e4
Remove unnecessary newline
Eclips4 May 17, 2025
d39e368
Remove old stuff
Eclips4 May 17, 2025
cf621d7
Address review comments
ambv May 19, 2025
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Address review comments
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@ambv
ambv committed May 19, 2025
commit cf621d7b6b9dd2c2ff47b3915bf6a4f1ed913f2f
18 changes: 8 additions & 10 deletions Lib/_pyrepl/simple_interact.py
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Expand Up @@ -110,14 +110,9 @@ def run_multiline_interactive_console(
more_lines = functools.partial(_more_lines, console)
input_n = 0

if sys._xoptions.get("showrefcount"):
# Were we compiled --with-pydebug?
if hasattr(sys, "gettotalrefcount"):
showrefcount = True
else:
showrefcount = False
else:
showrefcount = False
_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()
Expand Down Expand Up @@ -176,5 +171,8 @@ def maybe_run_command(statement: str) -> bool:
except:
console.showtraceback()
console.resetbuffer()
if showrefcount:
console.write(f"[{sys.gettotalrefcount()} refs, {sys.getallocatedblocks()} blocks]\n")
if show_ref_count:
console.write(
f"[{sys.gettotalrefcount()} refs,"
f" {sys.getallocatedblocks()} blocks]\n"
)
1 change: 1 addition & 0 deletions Lib/test/test_pyrepl/test_pyrepl.py
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Expand Up @@ -1614,6 +1614,7 @@ def test_prompt_after_help(self):
@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)
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