Sync Fork from Upstream Repo #512
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sthagen merged 40 commits intosthagen:mainfrom Jul 7, 2021
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…[s] and marshal.dumps (GH-26961)
Add an internal _PyType_AllocNoTrack() function to allocate an object without tracking it in the GC. Modify dict_new() to use _PyType_AllocNoTrack(): dict subclasses are now only tracked once all PyDictObject members are initialized. Calling _PyObject_GC_UNTRACK() is no longer needed for the dict type. Similar change in tuple_subtype_new() for tuple subclasses. Replace tuple_gc_track() with _PyObject_GC_TRACK().
_PyObject_GetMethod() now uses _PyType_IsReady() to decide if PyType_Ready() must be called or not, rather than testing if tp->tp_dict is NULL. Move also variable declarations closer to where they are used, and use Py_NewRef().
Remove the @asyncio.coroutine decorator enabling legacy generator-based coroutines to be compatible with async/await code; remove asyncio.coroutines.CoroWrapper used for wrapping legacy coroutine objects in the debug mode. The decorator has been deprecated since Python 3.8 and the removal was initially scheduled for Python 3.10.
Co-authored-by: Jordan Speicher <jordan@jspeicher.com>
This PR is part of PEP 657 and augments the compiler to emit ending line numbers as well as starting and ending columns from the AST into compiled code objects. This allows bytecodes to be correlated to the exact source code ranges that generated them. This information is made available through the following public APIs: * The `co_positions` method on code objects. * The C API function `PyCode_Addr2Location`. Co-authored-by: Batuhan Taskaya <isidentical@gmail.com> Co-authored-by: Ammar Askar <ammar@ammaraskar.com>
…H-26997) The new resizing system works like this; ``` $ cat t.py a + a + a + b + c + a + a + a + b + c + a + a + a + b + c + a + a + a + b + c [repeated 99 more times] $ ./python t.py RESIZE: prev len = 32, new len = 66 FINAL SIZE: 56 ----------------------------------------------------- RESIZE: prev len = 32, new len = 66 RESIZE: prev len = 66, new len = 134 RESIZE: prev len = 134, new len = 270 RESIZE: prev len = 270, new len = 542 RESIZE: prev len = 542, new len = 1086 RESIZE: prev len = 1086, new len = 2174 RESIZE: prev len = 2174, new len = 4350 RESIZE: prev len = 4350, new len = 8702 FINAL SIZE: 8004 ``` So now we do considerably lower number of `_PyBytes_Resize` calls. Automerge-Triggered-By: GH:isidentical
Ref: This changes the documentation for `EnvBuilder.ensure_directories(env_dir)` to match the actual behavior of that API call. In particular, `ensure_directories()` is not affected by the state of the `upgrade` attribute, and will not cause an error to have existing directories whether or not the `clear` attribute is set. This documentation change I believe should be valid to all python versions back to 3.6. Automerge-Triggered-By: GH:vsajip
…lags (GH-26118) Replace hex flag masks with named global variables to improve readability. eg. if flags & 0x800 becomes: if flags & _MASK_UTF_FILENAME
Automerge-Triggered-By: GH:isidentical
The traceback.c and traceback.py mechanisms now utilize the newly added code.co_positions and PyCode_Addr2Location to print carets on the specific expressions involved in a traceback. Co-authored-by: Pablo Galindo <Pablogsal@gmail.com> Co-authored-by: Ammar Askar <ammar@ammaraskar.com> Co-authored-by: Batuhan Taskaya <batuhanosmantaskaya@gmail.com>
…er (GH-26143) * zlib uses an UINT32_MAX sliding window for the output buffer These funtions have an initial output buffer size parameter: - zlib.decompress(data, /, wbits=MAX_WBITS, bufsize=DEF_BUF_SIZE) - zlib.Decompress.flush([length]) If the initial size > UINT32_MAX, use an UINT32_MAX sliding window, instead of clamping to UINT32_MAX. Speed up when (the initial size == the actual size). This fixes a memory consumption and copying performance regression in earlier 3.10 beta releases if someone used an output buffer larger than 4GiB with zlib.decompress. Reviewed-by: Gregory P. Smith
In debug build failed tee.fromiterable() corrupted the linked list of all GC objects.
help(object) via pydoc.TextDoc.docclass(object) iterates over the subclasses of object, which includes typing.io and typing.re if typing is imported. It tries to access cls.__module__ for each of those sub-classes. This change suppresses warnings when accessing cls.__module__.
Co-authored-by: Ken Jin <28750310+Fidget-Spinner@users.noreply.github.com> Co-authored-by: Guido van Rossum <gvanrossum@gmail.com>
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