Mailman 3 February 2015 - Python-checkins

cpython: Issue #19980: Improved help() for non-recognized strings. help('') now
by serhiy.storchaka 28 Feb '15

28 Feb '15

https://hg.python.org/cpython/rev/4a1fe339dcf6 changeset: 94790:4a1fe339dcf6 user: Serhiy Storchaka <storchaka(a)gmail.com> date: Sun Mar 01 00:42:54 2015 +0200 summary: Issue #19980: Improved help() for non-recognized strings. help('') now shows the help on str. help('help') now shows the help on help(). Original patch by Mark Lawrence. files: Lib/pydoc.py | 14 ++++++++++---- Lib/test/test_pydoc.py | 5 ++++- Misc/ACKS | 1 + Misc/NEWS | 5 +++++ 4 files changed, 20 insertions(+), 5 deletions(-) diff --git a/Lib/pydoc.py b/Lib/pydoc.py --- a/Lib/pydoc.py +++ b/Lib/pydoc.py @@ -1577,7 +1577,10 @@ if isinstance(thing, str): object = locate(thing, forceload) if not object: - raise ImportError('no Python documentation found for %r' % thing) + raise ImportError('''\ +No Python documentation found for %r. +Use help() to get the interactive help utility. +Use help(str) for help on the str class.''' % thing) return object, thing else: name = getattr(thing, '__name__', None) @@ -1848,7 +1851,10 @@ break request = replace(request, '"', '', "'", '').strip() if request.lower() in ('q', 'quit'): break - self.help(request) + if request == 'help': + self.intro() + else: + self.help(request) def getline(self, prompt): """Read one line, using input() when appropriate.""" @@ -1862,8 +1868,7 @@ def help(self, request): if type(request) is type(''): request = request.strip() - if request == 'help': self.intro() - elif request == 'keywords': self.listkeywords() + if request == 'keywords': self.listkeywords() elif request == 'symbols': self.listsymbols() elif request == 'topics': self.listtopics() elif request == 'modules': self.listmodules() @@ -1876,6 +1881,7 @@ elif request in self.keywords: self.showtopic(request) elif request in self.topics: self.showtopic(request) elif request: doc(request, 'Help on %s:', output=self._output) + else: doc(str, 'Help on %s:', output=self._output) elif isinstance(request, Helper): self() else: doc(request, 'Help on %s:', output=self._output) self.output.write('\n') diff --git a/Lib/test/test_pydoc.py b/Lib/test/test_pydoc.py --- a/Lib/test/test_pydoc.py +++ b/Lib/test/test_pydoc.py @@ -256,7 +256,10 @@ for s in expected_data_docstrings) # output pattern for missing module -missing_pattern = "no Python documentation found for '%s'" +missing_pattern = '''\ +No Python documentation found for %r. +Use help() to get the interactive help utility. +Use help(str) for help on the str class.'''.replace('\n', os.linesep) # output pattern for module with bad imports badimport_pattern = "problem in %s - ImportError: No module named %r" diff --git a/Misc/ACKS b/Misc/ACKS --- a/Misc/ACKS +++ b/Misc/ACKS @@ -789,6 +789,7 @@ Simon Law Julia Lawall Chris Lawrence +Mark Lawrence Brian Leair Mathieu Leduc-Hamel Amandine Lee diff --git a/Misc/NEWS b/Misc/NEWS --- a/Misc/NEWS +++ b/Misc/NEWS @@ -12,6 +12,11 @@ Library ------- + +- Issue #19980: Improved help() for non-recognized strings. help('') now + shows the help on str. help('help') now shows the help on help(). + Original patch by Mark Lawrence. + - Issue #23521: Corrected pure python implementation of timedelta division. * Eliminated OverflowError from timedelta * float for some floats; -- Repository URL: https://hg.python.org/cpython

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cpython (merge default -> default): merge
by alexander.belopolsky 28 Feb '15

28 Feb '15

https://hg.python.org/cpython/rev/85b2aa520c84 changeset: 94789:85b2aa520c84 parent: 94788:d783132d72bc parent: 94786:5942fd9ab335 user: Alexander Belopolsky <alexander.belopolsky(a)gmail.com> date: Sat Feb 28 10:46:00 2015 -0500 summary: merge files: Modules/_collectionsmodule.c | 4 +++- 1 files changed, 3 insertions(+), 1 deletions(-) diff --git a/Modules/_collectionsmodule.c b/Modules/_collectionsmodule.c --- a/Modules/_collectionsmodule.c +++ b/Modules/_collectionsmodule.c @@ -788,7 +788,9 @@ while (n--) b = b->rightlink; } else { - n = (deque->leftindex + Py_SIZE(deque) - 1) / BLOCKLEN - n; + n = (Py_ssize_t)( + ((unsigned)(deque->leftindex + Py_SIZE(deque) - 1)) + / BLOCKLEN - n); b = deque->rightblock; while (n--) b = b->leftlink; -- Repository URL: https://hg.python.org/cpython

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cpython (merge 3.4 -> default): Fixes #23521: Corrected pure python implementation of timedelta division.
by alexander.belopolsky 28 Feb '15

28 Feb '15

https://hg.python.org/cpython/rev/d783132d72bc changeset: 94788:d783132d72bc parent: 94785:eae459e35cb9 parent: 94787:8fe15bf68522 user: Alexander Belopolsky <alexander.belopolsky(a)gmail.com> date: Sat Feb 28 10:44:47 2015 -0500 summary: Fixes #23521: Corrected pure python implementation of timedelta division. * Eliminated OverflowError from timedelta * float for some floats; * Corrected rounding in timedlta true division. files: Lib/datetime.py | 26 +++++++++++++++++-- Lib/test/datetimetester.py | 34 ++++++++++++++++++++++++++ Misc/NEWS | 4 +++ 3 files changed, 61 insertions(+), 3 deletions(-) diff --git a/Lib/datetime.py b/Lib/datetime.py --- a/Lib/datetime.py +++ b/Lib/datetime.py @@ -297,6 +297,25 @@ raise TypeError("can't compare '%s' to '%s'" % ( type(x).__name__, type(y).__name__)) +def _divide_and_round(a, b): + """divide a by b and round result to the nearest integer + + When the ratio is exactly half-way between two integers, + the even integer is returned. + """ + # Based on the reference implementation for divmod_near + # in Objects/longobject.c. + q, r = divmod(a, b) + # round up if either r / b > 0.5, or r / b == 0.5 and q is odd. + # The expression r / b > 0.5 is equivalent to 2 * r > b if b is + # positive, 2 * r < b if b negative. + r *= 2 + greater_than_half = r > b if b > 0 else r < b + if greater_than_half or r == b and q % 2 == 1: + q += 1 + + return q + class timedelta: """Represent the difference between two datetime objects. @@ -515,8 +534,9 @@ self._seconds * other, self._microseconds * other) if isinstance(other, float): + usec = self._to_microseconds() a, b = other.as_integer_ratio() - return self * a / b + return timedelta(0, 0, _divide_and_round(usec * a, b)) return NotImplemented __rmul__ = __mul__ @@ -541,10 +561,10 @@ if isinstance(other, timedelta): return usec / other._to_microseconds() if isinstance(other, int): - return timedelta(0, 0, usec / other) + return timedelta(0, 0, _divide_and_round(usec, other)) if isinstance(other, float): a, b = other.as_integer_ratio() - return timedelta(0, 0, b * usec / a) + return timedelta(0, 0, _divide_and_round(b * usec, a)) def __mod__(self, other): if isinstance(other, timedelta): diff --git a/Lib/test/datetimetester.py b/Lib/test/datetimetester.py --- a/Lib/test/datetimetester.py +++ b/Lib/test/datetimetester.py @@ -62,6 +62,33 @@ 'tzinfo']) self.assertEqual(names - allowed, set([])) + def test_divide_and_round(self): + if '_Fast' in str(self): + return + dar = datetime_module._divide_and_round + + self.assertEqual(dar(-10, -3), 3) + self.assertEqual(dar(5, -2), -2) + + # four cases: (2 signs of a) x (2 signs of b) + self.assertEqual(dar(7, 3), 2) + self.assertEqual(dar(-7, 3), -2) + self.assertEqual(dar(7, -3), -2) + self.assertEqual(dar(-7, -3), 2) + + # ties to even - eight cases: + # (2 signs of a) x (2 signs of b) x (even / odd quotient) + self.assertEqual(dar(10, 4), 2) + self.assertEqual(dar(-10, 4), -2) + self.assertEqual(dar(10, -4), -2) + self.assertEqual(dar(-10, -4), 2) + + self.assertEqual(dar(6, 4), 2) + self.assertEqual(dar(-6, 4), -2) + self.assertEqual(dar(6, -4), -2) + self.assertEqual(dar(-6, -4), 2) + + ############################################################################# # tzinfo tests @@ -394,6 +421,10 @@ eq((-3*us) * 0.5, -2*us) eq((-5*us) * 0.5, -2*us) + # Issue #23521 + eq(td(seconds=1) * 0.123456, td(microseconds=123456)) + eq(td(seconds=1) * 0.6112295, td(microseconds=611229)) + # Division by int and float eq((3*us) / 2, 2*us) eq((5*us) / 2, 2*us) @@ -408,6 +439,9 @@ for i in range(-10, 10): eq((i*us/-3)//us, round(i/-3)) + # Issue #23521 + eq(td(seconds=1) / (1 / 0.6112295), td(microseconds=611229)) + # Issue #11576 eq(td(999999999, 86399, 999999) - td(999999999, 86399, 999998), td(0, 0, 1)) diff --git a/Misc/NEWS b/Misc/NEWS --- a/Misc/NEWS +++ b/Misc/NEWS @@ -12,6 +12,10 @@ Library ------- +- Issue #23521: Corrected pure python implementation of timedelta division. + + * Eliminated OverflowError from timedelta * float for some floats; + * Corrected rounding in timedlta true division. - Issue #21619: Popen objects no longer leave a zombie after exit in the with statement if the pipe was broken. Patch by Martin Panter. -- Repository URL: https://hg.python.org/cpython

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cpython (3.4): Fixes #23521: Corrected pure python implementation of timedelta division.
by alexander.belopolsky 28 Feb '15

28 Feb '15

https://hg.python.org/cpython/rev/8fe15bf68522 changeset: 94787:8fe15bf68522 branch: 3.4 parent: 94784:1b4d916329e7 user: Alexander Belopolsky <alexander.belopolsky(a)gmail.com> date: Sat Feb 28 10:41:57 2015 -0500 summary: Fixes #23521: Corrected pure python implementation of timedelta division. * Eliminated OverflowError from timedelta * float for some floats; * Corrected rounding in timedlta true division. files: Lib/datetime.py | 26 +++++++++++++++++-- Lib/test/datetimetester.py | 34 ++++++++++++++++++++++++++ Misc/NEWS | 4 +++ 3 files changed, 61 insertions(+), 3 deletions(-) diff --git a/Lib/datetime.py b/Lib/datetime.py --- a/Lib/datetime.py +++ b/Lib/datetime.py @@ -280,6 +280,25 @@ raise TypeError("can't compare '%s' to '%s'" % ( type(x).__name__, type(y).__name__)) +def _divide_and_round(a, b): + """divide a by b and round result to the nearest integer + + When the ratio is exactly half-way between two integers, + the even integer is returned. + """ + # Based on the reference implementation for divmod_near + # in Objects/longobject.c. + q, r = divmod(a, b) + # round up if either r / b > 0.5, or r / b == 0.5 and q is odd. + # The expression r / b > 0.5 is equivalent to 2 * r > b if b is + # positive, 2 * r < b if b negative. + r *= 2 + greater_than_half = r > b if b > 0 else r < b + if greater_than_half or r == b and q % 2 == 1: + q += 1 + + return q + class timedelta: """Represent the difference between two datetime objects. @@ -506,8 +525,9 @@ self._seconds * other, self._microseconds * other) if isinstance(other, float): + usec = self._to_microseconds() a, b = other.as_integer_ratio() - return self * a / b + return timedelta(0, 0, _divide_and_round(usec * a, b)) return NotImplemented __rmul__ = __mul__ @@ -532,10 +552,10 @@ if isinstance(other, timedelta): return usec / other._to_microseconds() if isinstance(other, int): - return timedelta(0, 0, usec / other) + return timedelta(0, 0, _divide_and_round(usec, other)) if isinstance(other, float): a, b = other.as_integer_ratio() - return timedelta(0, 0, b * usec / a) + return timedelta(0, 0, _divide_and_round(b * usec, a)) def __mod__(self, other): if isinstance(other, timedelta): diff --git a/Lib/test/datetimetester.py b/Lib/test/datetimetester.py --- a/Lib/test/datetimetester.py +++ b/Lib/test/datetimetester.py @@ -50,6 +50,33 @@ self.assertEqual(datetime.MINYEAR, 1) self.assertEqual(datetime.MAXYEAR, 9999) + def test_divide_and_round(self): + if '_Fast' in str(self): + return + dar = datetime_module._divide_and_round + + self.assertEqual(dar(-10, -3), 3) + self.assertEqual(dar(5, -2), -2) + + # four cases: (2 signs of a) x (2 signs of b) + self.assertEqual(dar(7, 3), 2) + self.assertEqual(dar(-7, 3), -2) + self.assertEqual(dar(7, -3), -2) + self.assertEqual(dar(-7, -3), 2) + + # ties to even - eight cases: + # (2 signs of a) x (2 signs of b) x (even / odd quotient) + self.assertEqual(dar(10, 4), 2) + self.assertEqual(dar(-10, 4), -2) + self.assertEqual(dar(10, -4), -2) + self.assertEqual(dar(-10, -4), 2) + + self.assertEqual(dar(6, 4), 2) + self.assertEqual(dar(-6, 4), -2) + self.assertEqual(dar(6, -4), -2) + self.assertEqual(dar(-6, -4), 2) + + ############################################################################# # tzinfo tests @@ -382,6 +409,10 @@ eq((-3*us) * 0.5, -2*us) eq((-5*us) * 0.5, -2*us) + # Issue #23521 + eq(td(seconds=1) * 0.123456, td(microseconds=123456)) + eq(td(seconds=1) * 0.6112295, td(microseconds=611229)) + # Division by int and float eq((3*us) / 2, 2*us) eq((5*us) / 2, 2*us) @@ -396,6 +427,9 @@ for i in range(-10, 10): eq((i*us/-3)//us, round(i/-3)) + # Issue #23521 + eq(td(seconds=1) / (1 / 0.6112295), td(microseconds=611229)) + # Issue #11576 eq(td(999999999, 86399, 999999) - td(999999999, 86399, 999998), td(0, 0, 1)) diff --git a/Misc/NEWS b/Misc/NEWS --- a/Misc/NEWS +++ b/Misc/NEWS @@ -12,6 +12,10 @@ Library ------- +- Issue #23521: Corrected pure python implementation of timedelta division. + + * Eliminated OverflowError from timedelta * float for some floats; + * Corrected rounding in timedlta true division. - Issue #21619: Popen objects no longer leave a zombie after exit in the with statement if the pipe was broken. Patch by Martin Panter. -- Repository URL: https://hg.python.org/cpython

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cpython: Convert one more division to unsigned arithmetic to speed-up deque_item().
by raymond.hettinger 28 Feb '15

28 Feb '15

https://hg.python.org/cpython/rev/5942fd9ab335 changeset: 94786:5942fd9ab335 user: Raymond Hettinger <python(a)rcn.com> date: Sat Feb 28 07:41:30 2015 -0800 summary: Convert one more division to unsigned arithmetic to speed-up deque_item(). files: Modules/_collectionsmodule.c | 4 +++- 1 files changed, 3 insertions(+), 1 deletions(-) diff --git a/Modules/_collectionsmodule.c b/Modules/_collectionsmodule.c --- a/Modules/_collectionsmodule.c +++ b/Modules/_collectionsmodule.c @@ -788,7 +788,9 @@ while (n--) b = b->rightlink; } else { - n = (deque->leftindex + Py_SIZE(deque) - 1) / BLOCKLEN - n; + n = (Py_ssize_t)( + ((unsigned)(deque->leftindex + Py_SIZE(deque) - 1)) + / BLOCKLEN - n); b = deque->rightblock; while (n--) b = b->leftlink; -- Repository URL: https://hg.python.org/cpython

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Daily reference leaks (91a1613e161c): sum=6
by solipsis＠pitrou.net 28 Feb '15

28 Feb '15

results for 91a1613e161c on branch "default" -------------------------------------------- test_asyncio leaked [0, 3, 0] memory blocks, sum=3 test_functools leaked [0, 0, 3] memory blocks, sum=3 Command line was: ['./python', '-m', 'test.regrtest', '-uall', '-R', '3:3:/home/antoine/cpython/refleaks/reflogvsWBR0', '-x']

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cpython (3.4): Fixed a test for issue #21619 on Windows.
by serhiy.storchaka 28 Feb '15

28 Feb '15

https://hg.python.org/cpython/rev/1b4d916329e7 changeset: 94784:1b4d916329e7 branch: 3.4 parent: 94782:b5e9ddbdd4a7 user: Serhiy Storchaka <storchaka(a)gmail.com> date: Sat Feb 28 13:27:54 2015 +0200 summary: Fixed a test for issue #21619 on Windows. On Windows an OSError with errno=EINVAL is raised. files: Lib/test/test_subprocess.py | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/Lib/test/test_subprocess.py b/Lib/test/test_subprocess.py --- a/Lib/test/test_subprocess.py +++ b/Lib/test/test_subprocess.py @@ -2531,7 +2531,7 @@ proc.stdout.read() # Make sure subprocess has closed its input proc.stdin.write(b"buffered data") self.assertIsNone(proc.returncode) - self.assertRaises(BrokenPipeError, proc.__exit__, None, None, None) + self.assertRaises(OSError, proc.__exit__, None, None, None) self.assertEqual(0, proc.returncode) self.assertTrue(proc.stdin.closed) self.assertTrue(proc.stdout.closed) -- Repository URL: https://hg.python.org/cpython

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cpython (merge 3.4 -> default): Fixed a test for issue #21619 on Windows.
by serhiy.storchaka 28 Feb '15

28 Feb '15

https://hg.python.org/cpython/rev/eae459e35cb9 changeset: 94785:eae459e35cb9 parent: 94783:cdac249808a8 parent: 94784:1b4d916329e7 user: Serhiy Storchaka <storchaka(a)gmail.com> date: Sat Feb 28 13:28:19 2015 +0200 summary: Fixed a test for issue #21619 on Windows. On Windows an OSError with errno=EINVAL is raised. files: Lib/test/test_subprocess.py | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/Lib/test/test_subprocess.py b/Lib/test/test_subprocess.py --- a/Lib/test/test_subprocess.py +++ b/Lib/test/test_subprocess.py @@ -2512,7 +2512,7 @@ proc.stdout.read() # Make sure subprocess has closed its input proc.stdin.write(b"buffered data") self.assertIsNone(proc.returncode) - self.assertRaises(BrokenPipeError, proc.__exit__, None, None, None) + self.assertRaises(OSError, proc.__exit__, None, None, None) self.assertEqual(0, proc.returncode) self.assertTrue(proc.stdin.closed) self.assertTrue(proc.stdout.closed) -- Repository URL: https://hg.python.org/cpython

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cpython (3.4): Issue #21619: Popen objects no longer leave a zombie after exit in the with
by serhiy.storchaka 28 Feb '15

28 Feb '15

https://hg.python.org/cpython/rev/b5e9ddbdd4a7 changeset: 94782:b5e9ddbdd4a7 branch: 3.4 parent: 94778:b7945565e150 user: Serhiy Storchaka <storchaka(a)gmail.com> date: Sat Feb 28 12:43:08 2015 +0200 summary: Issue #21619: Popen objects no longer leave a zombie after exit in the with statement if the pipe was broken. Patch by Martin Panter. files: Lib/subprocess.py | 10 ++++++---- Lib/test/test_subprocess.py | 15 +++++++++++++++ Misc/NEWS | 3 +++ 3 files changed, 24 insertions(+), 4 deletions(-) diff --git a/Lib/subprocess.py b/Lib/subprocess.py --- a/Lib/subprocess.py +++ b/Lib/subprocess.py @@ -896,10 +896,12 @@ self.stdout.close() if self.stderr: self.stderr.close() - if self.stdin: - self.stdin.close() - # Wait for the process to terminate, to avoid zombies. - self.wait() + try: # Flushing a BufferedWriter may raise an error + if self.stdin: + self.stdin.close() + finally: + # Wait for the process to terminate, to avoid zombies. + self.wait() def __del__(self, _maxsize=sys.maxsize): if not self._child_created: diff --git a/Lib/test/test_subprocess.py b/Lib/test/test_subprocess.py --- a/Lib/test/test_subprocess.py +++ b/Lib/test/test_subprocess.py @@ -2521,6 +2521,21 @@ stderr=subprocess.PIPE) as proc: pass + def test_broken_pipe_cleanup(self): + """Broken pipe error should not prevent wait() (Issue 21619)""" + proc = subprocess.Popen([sys.executable, "-c", + "import sys;" + "sys.stdin.close();" + "sys.stdout.close();" # Signals that input pipe is closed + ], stdin=subprocess.PIPE, stdout=subprocess.PIPE) + proc.stdout.read() # Make sure subprocess has closed its input + proc.stdin.write(b"buffered data") + self.assertIsNone(proc.returncode) + self.assertRaises(BrokenPipeError, proc.__exit__, None, None, None) + self.assertEqual(0, proc.returncode) + self.assertTrue(proc.stdin.closed) + self.assertTrue(proc.stdout.closed) + def test_main(): unit_tests = (ProcessTestCase, diff --git a/Misc/NEWS b/Misc/NEWS --- a/Misc/NEWS +++ b/Misc/NEWS @@ -13,6 +13,9 @@ Library ------- +- Issue #21619: Popen objects no longer leave a zombie after exit in the with + statement if the pipe was broken. Patch by Martin Panter. + - Issue #6639: Module-level turtle functions no longer raise TclError after closing the window. -- Repository URL: https://hg.python.org/cpython

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cpython (merge 3.4 -> default): Issue #21619: Popen objects no longer leave a zombie after exit in the with
by serhiy.storchaka 28 Feb '15

28 Feb '15

https://hg.python.org/cpython/rev/cdac249808a8 changeset: 94783:cdac249808a8 parent: 94781:de6d278c432a parent: 94782:b5e9ddbdd4a7 user: Serhiy Storchaka <storchaka(a)gmail.com> date: Sat Feb 28 12:45:00 2015 +0200 summary: Issue #21619: Popen objects no longer leave a zombie after exit in the with statement if the pipe was broken. Patch by Martin Panter. files: Lib/subprocess.py | 10 ++++++---- Lib/test/test_subprocess.py | 15 +++++++++++++++ Misc/NEWS | 3 +++ 3 files changed, 24 insertions(+), 4 deletions(-) diff --git a/Lib/subprocess.py b/Lib/subprocess.py --- a/Lib/subprocess.py +++ b/Lib/subprocess.py @@ -892,10 +892,12 @@ self.stdout.close() if self.stderr: self.stderr.close() - if self.stdin: - self.stdin.close() - # Wait for the process to terminate, to avoid zombies. - self.wait() + try: # Flushing a BufferedWriter may raise an error + if self.stdin: + self.stdin.close() + finally: + # Wait for the process to terminate, to avoid zombies. + self.wait() def __del__(self, _maxsize=sys.maxsize): if not self._child_created: diff --git a/Lib/test/test_subprocess.py b/Lib/test/test_subprocess.py --- a/Lib/test/test_subprocess.py +++ b/Lib/test/test_subprocess.py @@ -2502,6 +2502,21 @@ stderr=subprocess.PIPE) as proc: pass + def test_broken_pipe_cleanup(self): + """Broken pipe error should not prevent wait() (Issue 21619)""" + proc = subprocess.Popen([sys.executable, "-c", + "import sys;" + "sys.stdin.close();" + "sys.stdout.close();" # Signals that input pipe is closed + ], stdin=subprocess.PIPE, stdout=subprocess.PIPE) + proc.stdout.read() # Make sure subprocess has closed its input + proc.stdin.write(b"buffered data") + self.assertIsNone(proc.returncode) + self.assertRaises(BrokenPipeError, proc.__exit__, None, None, None) + self.assertEqual(0, proc.returncode) + self.assertTrue(proc.stdin.closed) + self.assertTrue(proc.stdout.closed) + def test_main(): unit_tests = (ProcessTestCase, diff --git a/Misc/NEWS b/Misc/NEWS --- a/Misc/NEWS +++ b/Misc/NEWS @@ -13,6 +13,9 @@ Library ------- +- Issue #21619: Popen objects no longer leave a zombie after exit in the with + statement if the pipe was broken. Patch by Martin Panter. + - Issue #15955: Add an option to limit the output size in bz2.decompress(). Patch by Nikolaus Rath. -- Repository URL: https://hg.python.org/cpython

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