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* GH-98686: Quicken everything (GH-98687)Brandt Bucher2022-11-021-28/+1
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* gh-96143: Improve perf profiler docs (#96445)Erlend E. Aasland2022-10-271-4/+6
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* gh-97841: Add methoddef for _filters_mutated (gh-98115)Dong-hee Na2022-10-091-1/+18
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* gh-96526: Clarify format and __format__ docstrings (gh-96648)Michael2022-10-031-5/+8
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* Fix typos in `bltinmodule.c`. (GH-97766)Nikita Sobolev2022-10-031-5/+5
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* gh-95778: CVE-2020-10735: Prevent DoS by very large int() (#96499)Gregory P. Smith2022-09-021-1/+77
| | | | | | | | | | | | | | | | Integer to and from text conversions via CPython's bignum `int` type is not safe against denial of service attacks due to malicious input. Very large input strings with hundred thousands of digits can consume several CPU seconds. This PR comes fresh from a pile of work done in our private PSRT security response team repo. Signed-off-by: Christian Heimes [Red Hat] <christian@python.org> Tons-of-polishing-up-by: Gregory P. Smith [Google] <greg@krypto.org> Reviews via the private PSRT repo via many others (see the NEWS entry in the PR). <!-- gh-issue-number: gh-95778 --> * Issue: gh-95778 <!-- /gh-issue-number --> I wrote up [a one pager for the release managers](https://docs.google.com/document/d/1KjuF_aXlzPUxTK4BMgezGJ2Pn7uevfX7g0_mvgHlL7Y/edit#). Much of that text wound up in the Issue. Backports PRs already exist. See the issue for links.
* gh-96143: Allow Linux perf profiler to see Python calls (GH-96123)Pablo Galindo Salgado2022-08-301-1/+74
| | | | | | | :warning: :warning: Note for reviewers, hackers and fellow systems/low-level/compiler engineers :warning: :warning: If you have a lot of experience with this kind of shenanigans and want to improve the **first** version, **please make a PR against my branch** or **reach out by email** or **suggest code changes directly on GitHub**. If you have any **refinements or optimizations** please, wait until the first version is merged before starting hacking or proposing those so we can keep this PR productive.
* GH-93503: Add thread-specific APIs to set profiling and tracing functions in ↵Pablo Galindo Salgado2022-08-241-1/+25
| | | | | | | | | | | | | | | | | the C-API (#93504) * gh-93503: Add APIs to set profiling and tracing functions in all threads in the C-API * Use a separate API * Fix NEWS entry * Add locks around the loop * Document ignoring exceptions * Use the new APIs in the sys module * Update docs
* gh-90928: Improve static initialization of keywords tuple in AC (#95907)Erlend E. Aasland2022-08-136-261/+111
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* gh-90928: Statically Initialize the Keywords Tuple in Clinic-Generated Code ↵Eric Snow2022-08-118-23/+566
| | | | | | | | | | | | | | | | (gh-95860) We only statically initialize for core code and builtin modules. Extension modules still create the tuple at runtime. We'll solve that part of interpreter isolation separately. This change includes generated code. The non-generated changes are in: * Tools/clinic/clinic.py * Python/getargs.c * Include/cpython/modsupport.h * Makefile.pre.in (re-generate global strings after running clinic) * very minor tweaks to Modules/_codecsmodule.c and Python/Python-tokenize.c All other changes are generated code (clinic, global strings).
* gh-91102: Port 8-argument _warnings.warn_explicit to Argument Clinic (#92891)Oleg Iarygin2022-07-201-1/+82
| | | Co-authored-by: Erlend E. Aasland <erlend.aasland@protonmail.com>
* GH-93841: Allow stats to be turned on and off, cleared and dumped at ↵Mark Shannon2022-06-211-1/+105
| | | | runtime. (GH-93843)
* gh-92203: Add closure support to exec(). (#92204)larryhastings2022-05-061-11/+26
| | | Add a closure keyword-only parameter to exec(). It can only be specified when exec-ing a code object that uses free variables. When specified, it must be a tuple, with exactly the number of cell variables referenced by the code object. closure has a default value of None, and it must be None if the code object doesn't refer to any free variables.
* gh-91320: Argument Clinic uses _PyCFunction_CAST() (#32210)Victor Stinner2022-05-036-39/+39
| | | | Replace "(PyCFunction)(void(*)(void))func" cast with _PyCFunction_CAST(func).
* Use FASTCALL for __import__ (GH-31752)Kumar Aditya2022-03-111-1/+80
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* bpo-46328: Add sys.exception() (GH-30514)Irit Katriel2022-01-131-1/+23
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* bpo-21736: Set __file__ on frozen stdlib modules. (gh-28656)Eric Snow2021-10-141-10/+27
| | | | | | | | | | | | | | | | | | | | | | | | Currently frozen modules do not have __file__ set. In their spec, origin is set to "frozen" and they are marked as not having a location. (Similarly, for frozen packages __path__ is set to an empty list.) However, for frozen stdlib modules we are able to extrapolate __file__ as long as we can determine the stdlib directory at runtime. (We now do so since gh-28586.) Having __file__ set is helpful for a number of reasons. Likewise, having a non-empty __path__ means we can import submodules of a frozen package from the filesystem (e.g. we could partially freeze the encodings module). This change sets __file__ (and adds to __path__) for frozen stdlib modules. It uses sys._stdlibdir (from gh-28586) and the frozen module alias information (from gh-28655). All that work is done in FrozenImporter (in Lib/importlib/_bootstrap.py). Also, if a frozen module is imported before importlib is bootstrapped (during interpreter initialization) then we fix up that module and its spec during the importlib bootstrapping step (i.e. imporlib._bootstrap._setup()) to match what gets set by FrozenImporter, including setting the file info (if the stdlib dir is known). To facilitate this, modules imported using PyImport_ImportFrozenModule() have __origname__ set using the frozen module alias info. __origname__ is popped off during importlib bootstrap. (To be clear, even with this change the new code to set __file__ during fixups in imporlib._bootstrap._setup() doesn't actually get triggered yet. This is because sys._stdlibdir hasn't been set yet in interpreter initialization at the point importlib is bootstrapped. However, we do fix up such modules at that point to otherwise match the result of importing through FrozenImporter, just not the __file__ and __path__ parts. Doing so will require changes in the order in which things happen during interpreter initialization. That can be addressed separately. Once it is, the file-related fixup code from this PR will kick in.) Here are things this change does not do: * set __file__ for non-stdlib modules (no way of knowing the parent dir) * set __file__ if the stdlib dir is not known (nor assume the expense of finding it) * relatedly, set __file__ if the stdlib is in a zip file * verify that the filename set to __file__ actually exists (too expensive) * update __path__ for frozen packages that alias a non-package (since there is no package dir) Other things this change skips, but we may do later: * set __file__ on modules imported using PyImport_ImportFrozenModule() * set co_filename when we unmarshal the frozen code object while importing the module (e.g. in FrozenImporter.exec_module()) -- this would allow tracebacks to show source lines * implement FrozenImporter.get_filename() and FrozenImporter.get_source() https://bugs.python.org/issue21736
* bpo-45020: Identify which frozen modules are actually aliases. (gh-28655)Eric Snow2021-10-051-2/+5
| | | | | | | In the list of generated frozen modules at the top of Tools/scripts/freeze_modules.py, you will find that some of the modules have a different name than the module (or .py file) that is actually frozen. Let's call each case an "alias". Aliases do not come into play until we get to the (generated) list of modules in Python/frozen.c. (The tool for freezing modules, Programs/_freeze_module, is only concerned with the source file, not the module it will be used for.) Knowledge of which frozen modules are aliases (and the identity of the original module) normally isn't important. However, this information is valuable when we go to set __file__ on frozen stdlib modules. This change updates Tools/scripts/freeze_modules.py to map aliases to the original module name (or None if not a stdlib module) in Python/frozen.c. We also add a helper function in Python/import.c to look up a frozen module's alias and add the result of that function to the frozen info returned from find_frozen(). https://bugs.python.org/issue45020
* bpo-45324: Capture data in FrozenImporter.find_spec() to use in ↵Eric Snow2021-10-051-10/+57
| | | | | | | | | | | exec_module(). (gh-28633) Before this change we end up duplicating effort and throwing away data in FrozenImporter.find_spec(). Now we do the work once in find_spec() and the only thing we do in FrozenImporter.exec_module() is turn the raw frozen data into a code object and then exec it. We've added _imp.find_frozen(), add an arg to _imp.get_frozen_object(), and updated FrozenImporter. We've also moved some code around to reduce duplication, get a little more consistency in outcomes, and be more efficient. Note that this change is mostly necessary if we want to set __file__ on frozen stdlib modules. (See https://bugs.python.org/issue21736.) https://bugs.python.org/issue45324
* bpo-45020: Add -X frozen_modules=[on|off] to explicitly control use of ↵Eric Snow2021-09-141-1/+32
| | | | | | | frozen modules. (gh-28320) Currently we freeze several modules into the runtime. For each of these modules it is essential to bootstrapping the runtime that they be frozen. Any other stdlib module that we later freeze into the runtime is not essential. We can just as well import from the .py file. This PR lets users explicitly choose which should be used, with the new "-X frozen_modules=[on|off]" CLI flag. The default is "off" for now. https://bugs.python.org/issue45020
* bpo-45019: Do some cleanup related to frozen modules. (gh-28319)Eric Snow2021-09-131-1/+19
| | | | | There are a few things I missed in gh-27980. This is a follow-up that will make subsequent PRs cleaner. It includes fixes to tests and tools that reference the frozen modules. https://bugs.python.org/issue45019
* Add tests for the C tokenizer and expose it as a private module (GH-27924)Pablo Galindo Salgado2021-08-241-0/+41
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* bpo-20201: variadic arguments support for AC (GH-18609)Batuhan Taskaya2021-07-161-1/+75
| | | Implement support for `*args` in AC, and port `print()` to use it.
* Remove sys._deactivate_opcache() now that is not needed (GH-27154)Pablo Galindo Salgado2021-07-151-19/+1
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* bpo-43918: document signature and default argument of `anext` builtin (#25551)Erik Welch2021-06-221-2/+5
| | | Co-authored-by: Dennis Sweeney <36520290+sweeneyde@users.noreply.github.com>
* bpo-44187: Quickening infrastructure (GH-26264)Mark Shannon2021-06-071-1/+28
| | | | | | | | | | | | | | * Add co_firstinstr field to code object. * Implement barebones quickening. * Use non-quickened bytecode when tracing. * Add NEWS item * Add new file to Windows build. * Don't specialize instructions with EXTENDED_ARG.
* bpo-31861: Add aiter and anext to builtins (#23847)Joshua Bronson2021-03-231-1/+45
| | | | | | Co-authored-by: jab <jab@users.noreply.github.com> Co-authored-by: Daniel Pope <mauve@mauveweb.co.uk> Co-authored-by: Justin Wang <justin39@gmail.com>
* bpo-37146: Deactivate opcode cache only when using huntrleaks in the test ↵Pablo Galindo2021-02-281-1/+19
| | | | suite (GH-24643)
* bpo-41435: Add sys._current_exceptions() function (GH-21689)Julien Danjou2020-11-021-1/+21
| | | | | | This adds a new function named sys._current_exceptions() which is equivalent ot sys._current_frames() except that it returns the exceptions currently handled by other threads. It is equivalent to calling sys.exc_info() for each running thread.
* bpo-40471: Fix grammar typo in 'issubclass' docstring (GH-19847)Alex Povel2020-06-031-3/+3
| | | | | Just a brief grammar fix. See also <>.
* bpo-40792: Make the result of PyNumber_Index() always having exact type int. ↵Serhiy Storchaka2020-05-281-2/+2
| | | | | | | | | | | | (GH-20443) Previously, the result could have been an instance of a subclass of int. Also revert bpo-26202 and make attributes start, stop and step of the range object having exact type int. Add private function _PyNumber_Index() which preserves the old behavior of PyNumber_Index() for performance to use it in the conversion functions like PyLong_AsLong().
* bpo-37999: No longer use __int__ in implicit integer conversions. (GH-15636)Serhiy Storchaka2020-05-266-86/+6
| | | | Only __index__ should be used to make integer conversions lossless.
* bpo-39489: Remove COUNT_ALLOCS special build (GH-18259)Victor Stinner2020-02-031-26/+1
| | | | | | | | | | | Remove: * COUNT_ALLOCS macro * sys.getcounts() function * SHOW_ALLOC_COUNT code in listobject.c * SHOW_TRACK_COUNT code in tupleobject.c * PyConfig.show_alloc_count field * -X showalloccount command line option * @test.support.requires_type_collecting decorator
* Shorter docstring (GH-16322)Raymond Hettinger2019-09-211-2/+2
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* bpo-38237: Make pow's arguments have more descriptive names and be keyword ↵Ammar Askar2019-09-211-18/+24
| | | | | | | | | | | | passable (GH-16302) Edit: `math.pow` changes removed on Mark's request. https://bugs.python.org/issue38237 Automerge-Triggered-By: @rhettinger
* bpo-37206: Unrepresentable default values no longer represented as None. ↵Serhiy Storchaka2019-09-144-8/+8
| | | | | | | (GH-13933) In ArgumentClinic, value "NULL" should now be used only for unrepresentable default values (like in the optional third parameter of getattr). "None" should be used if None is accepted as argument and passing None has the same effect as not passing the argument at all.
* bpo-37034: Display argument name on errors with keyword arguments with ↵Rémi Lapeyre2019-08-295-19/+19
| | | | Argument Clinic. (GH-13593)
* bpo-37942: Improve argument clinic float converter (GH-15470)Raymond Hettinger2019-08-251-4/+10
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* bpo-37414: Remove sys.callstats() (GH-14398)Victor Stinner2019-06-261-38/+1
| | | | | Remove the undocumented sys.callstats() function. Since Python 3.7, it was deprecated and always returned None. It required a special build option CALL_PROFILE which was already removed in Python 3.7.
* bpo-37392: Remove sys.setcheckinterval() (GH-14355)Victor Stinner2019-06-251-57/+1
| | | | | | | Remove sys.getcheckinterval() and sys.setcheckinterval() functions. They were deprecated since Python 3.2. Use sys.getswitchinterval() and sys.setswitchinterval() instead. Remove also check_interval field of the PyInterpreterState structure.
* bpo-35766: compile(): rename feature_version parameter (GH-13994)Victor Stinner2019-06-121-5/+9
| | | | | | Rename compile() feature_version parameter to _feature_version and convert it to a keyword-only parameter. Update also test_type_comments to pass feature_version as a tuple.
* bpo-36933: Remove sys.set_coroutine_wrapper (marked for removal in 3.8) ↵Matthias Bussonnier2019-05-281-28/+1
| | | | | | | | | | (GH-13577) It has been documented as deprecated and to be removed in 3.8; From a comment on another thread – which I can't find ; leave get_coro_wrapper() for now, but always return `None`. https://bugs.python.org/issue36933
* bpo-36829: Add _PyErr_WriteUnraisableMsg() (GH-13488)Victor Stinner2019-05-271-4/+5
| | | | | * sys.unraisablehook: add 'err_msg' field to UnraisableHookArgs. * Use _PyErr_WriteUnraisableMsg() in _ctypes _DictRemover_call() and gc delete_garbage().
* bpo-36842: Implement PEP 578 (GH-12613)Steve Dower2019-05-231-1/+33
| | | Adds sys.audit, sys.addaudithook, io.open_code, and associated C APIs.
* bpo-36829: Add sys.unraisablehook() (GH-13187)Victor Stinner2019-05-221-1/+17
| | | | | | | | | | | | | | | | | | | Add new sys.unraisablehook() function which can be overridden to control how "unraisable exceptions" are handled. It is called when an exception has occurred but there is no way for Python to handle it. For example, when a destructor raises an exception or during garbage collection (gc.collect()). Changes: * Add an internal UnraisableHookArgs type used to pass arguments to sys.unraisablehook. * Add _PyErr_WriteUnraisableDefaultHook(). * The default hook now ignores exception on writing the traceback. * test_sys now uses unittest.main() to automatically discover tests: remove test_main(). * Add _PyErr_Init(). * Fix PyErr_WriteUnraisable(): hold a strong reference to sys.stderr while using it
* bpo-36127: Argument Clinic: inline parsing code for keyword parameters. ↵Serhiy Storchaka2019-03-145-26/+206
| | | | (GH-12058)
* bpo-35975: Support parsing earlier minor versions of Python 3 (GH-12086)Guido van Rossum2019-03-071-7/+8
| | | | | | | This adds a `feature_version` flag to `ast.parse()` (documented) and `compile()` (hidden) that allow tweaking the parser to support older versions of the grammar. In particular if `feature_version` is 5 or 6, the hacks for the `async` and `await` keyword from PEP 492 are reinstated. (For 7 or higher, these are unconditionally treated as keywords, but they are still special tokens rather than `NAME` tokens that the parser driver recognizes.) https://bugs.python.org/issue35975
* bpo-36101: remove non-ascii characters in docstring (GH-12018)animalize2019-02-241-2/+2
| | | | | * remove non-ascii characters in docstring * clinic.py emits a warning when docstring has non-ascii character
* bpo-35582: Argument Clinic: Optimize the "all boring objects" case. (GH-11520)Serhiy Storchaka2019-01-114-49/+89
| | | | | Use _PyArg_CheckPositional() and inlined code instead of PyArg_UnpackTuple() and _PyArg_UnpackStack() if all parameters are positional and use the "object" converter.
* bpo-35582: Argument Clinic: inline parsing code for positional parameters. ↵Serhiy Storchaka2019-01-114-23/+91
| | | | (GH-11313)
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