https://github.com/python/cpython/commit/27fc62cf4f6a9bbb4698299f02b8a519cbefdf53
commit: 27fc62cf4f6a9bbb4698299f02b8a519cbefdf53
branch: main
author: Tian Gao <gaogaotiant...@hotmail.com>
committer: gaogaotiantian <gaogaotiant...@hotmail.com>
date: 2025-03-14T14:46:26-04:00
summary:
gh-121468: Add current asyncio task as a convenience variable in pdb (#124367)
files:
A Misc/NEWS.d/next/Library/2025-03-11-21-52-33.gh-issue-121468.WsEP02.rst
M Doc/library/pdb.rst
M Doc/whatsnew/3.14.rst
M Lib/pdb.py
M Lib/test/test_pdb.py
diff --git a/Doc/library/pdb.rst b/Doc/library/pdb.rst
index 1c92398677d048..c4ddff378d9c83 100644
--- a/Doc/library/pdb.rst
+++ b/Doc/library/pdb.rst
@@ -313,16 +313,20 @@ sets a global variable ``$foo`` which you can use in the
debugger session. The
less likely to interfere with your program compared to using normal variables
like ``foo = 1``.
-There are three preset *convenience variables*:
+There are four preset *convenience variables*:
* ``$_frame``: the current frame you are debugging
* ``$_retval``: the return value if the frame is returning
* ``$_exception``: the exception if the frame is raising an exception
+* ``$_asynctask``: the asyncio task if pdb stops in an async function
.. versionadded:: 3.12
Added the *convenience variable* feature.
+.. versionadded:: 3.14
+ Added the ``$_asynctask`` convenience variable.
+
.. index::
pair: .pdbrc; file
triple: debugger; configuration; file
diff --git a/Doc/whatsnew/3.14.rst b/Doc/whatsnew/3.14.rst
index 65ab57eb821c6c..b1337190636529 100644
--- a/Doc/whatsnew/3.14.rst
+++ b/Doc/whatsnew/3.14.rst
@@ -830,6 +830,9 @@ pdb
fill in a 4-space indentation now, instead of inserting a ``\t`` character.
(Contributed by Tian Gao in :gh:`130471`.)
+* ``$_asynctask`` is added to access the current asyncio task if applicable.
+ (Contributed by Tian Gao in :gh:`124367`.)
+
pickle
------
diff --git a/Lib/pdb.py b/Lib/pdb.py
index 2842f3d497b978..0357e46ead3ec8 100644
--- a/Lib/pdb.py
+++ b/Lib/pdb.py
@@ -79,6 +79,7 @@
import codeop
import pprint
import signal
+import asyncio
import inspect
import textwrap
import tokenize
@@ -363,6 +364,8 @@ def __init__(self, completekey='tab', stdin=None,
stdout=None, skip=None,
self._chained_exceptions = tuple()
self._chained_exception_index = 0
+ self._current_task = None
+
def set_trace(self, frame=None, *, commands=None):
Pdb._last_pdb_instance = self
if frame is None:
@@ -405,7 +408,8 @@ def setup(self, f, tb):
tb = tb.tb_next
self.curframe = self.stack[self.curindex][0]
self.set_convenience_variable(self.curframe, '_frame', self.curframe)
-
+ if self._current_task:
+ self.set_convenience_variable(self.curframe, '_asynctask',
self._current_task)
self._save_initial_file_mtime(self.curframe)
if self._chained_exceptions:
@@ -616,6 +620,13 @@ def _hold_exceptions(self, exceptions):
self._chained_exceptions = tuple()
self._chained_exception_index = 0
+ def _get_asyncio_task(self):
+ try:
+ task = asyncio.current_task()
+ except RuntimeError:
+ task = None
+ return task
+
def interaction(self, frame, tb_or_exc):
# Restore the previous signal handler at the Pdb prompt.
if Pdb._previous_sigint_handler:
@@ -626,6 +637,8 @@ def interaction(self, frame, tb_or_exc):
else:
Pdb._previous_sigint_handler = None
+ self._current_task = self._get_asyncio_task()
+
_chained_exceptions, tb = self._get_tb_and_exceptions(tb_or_exc)
if isinstance(tb_or_exc, BaseException):
assert tb is not None, "main exception must have a traceback"
diff --git a/Lib/test/test_pdb.py b/Lib/test/test_pdb.py
index 910b8fcb74d1e3..87afe093e7730e 100644
--- a/Lib/test/test_pdb.py
+++ b/Lib/test/test_pdb.py
@@ -16,7 +16,7 @@
from contextlib import ExitStack, redirect_stdout
from io import StringIO
from test import support
-from test.support import force_not_colorized, os_helper
+from test.support import force_not_colorized, has_socket_support, os_helper
from test.support.import_helper import import_module
from test.support.pty_helper import run_pty, FakeInput
from test.support.script_helper import kill_python
@@ -2059,6 +2059,30 @@ def test_pdb_next_command_for_generator():
"""
if not SKIP_CORO_TESTS:
+ if has_socket_support:
+ def test_pdb_asynctask():
+ """Testing $_asynctask is accessible in async context
+
+ >>> import asyncio
+
+ >>> async def test():
+ ... import pdb; pdb.Pdb(nosigint=True,
readrc=False).set_trace()
+
+ >>> def test_function():
+ ... asyncio.run(test())
+
+ >>> with PdbTestInput([ # doctest: +ELLIPSIS
+ ... '$_asynctask',
+ ... 'continue',
+ ... ]):
+ ... test_function()
+ > <doctest test.test_pdb.test_pdb_asynctask[1]>(2)test()
+ -> import pdb; pdb.Pdb(nosigint=True, readrc=False).set_trace()
+ (Pdb) $_asynctask
+ <Task pending name='Task-1' coro=<test() running at <doctest
test.test_pdb.test_pdb_asynctask[1]>:2> ...
+ (Pdb) continue
+ """
+
def test_pdb_next_command_for_coroutine():
"""Testing skip unwinding stack on yield for coroutines for "next"
command
diff --git
a/Misc/NEWS.d/next/Library/2025-03-11-21-52-33.gh-issue-121468.WsEP02.rst
b/Misc/NEWS.d/next/Library/2025-03-11-21-52-33.gh-issue-121468.WsEP02.rst
new file mode 100644
index 00000000000000..833f156d261a06
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2025-03-11-21-52-33.gh-issue-121468.WsEP02.rst
@@ -0,0 +1,2 @@
+``$_asynctask`` is added as a :mod:`pdb` convenience variable to
+access the current asyncio task if applicable.
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