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[3.8] gh-98433: Fix quadratic time idna decoding. (GH-99092) (GH-99222)

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There was an unnecessary quadratic loop in idna decoding. This restores the behavior to linear. (cherry picked from commit d315722564927c7202dd6e111dc79eaf14240b0d) (cherry picked from commit a6f6c3a3d6f2b580f2d87885c9b8a9350ad7bf15) Co-authored-by: Miss Islington (bot) Co-authored-by:...

miss-islington

gh-64490: Fix refcount error when arguments are packed to tuple in argument clinic

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While Argument Clinic generated code is packing varargs to a tuple, the arguments' refcounts are not increased. So all the packed arguments‘ refcounts are decreased 1 improperly when the tuple...

colorfulappl

Argument Clinic should understand *args and **kwargs parameters

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BPO | [20291](https://bugs.python.org/issue20291) --- | :--- Nosy | @rhettinger, @ncoghlan, @vstinner, @larryhastings, @methane, @meadori, @zware, @serhiy-storchaka, @GPHemsley, @isidentical, @Fidget-Spinner, @colorfulappl PRs | python/cpython#18609python/cpython#27211python/cpython#30286python/cpython#32092 *Note: these values reflect the state of...

larryhastings

Slow IDNA decoding with large strings

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# Bug report Originally reported to the security address on September 9. ```python ('xn--016c'+'a'*5000).encode('utf-8').decode('idna') ``` The execution time is not linear in relation to the input string size, which can...

guidovranken

Python 3.10 installed from the Microsoft Store does not add scripts to path

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# Bug report After installing Python 3.10 from the Microsoft Store, I tried to install a package and was hit with the following warning: ``` WARNING: The script reCBZ.exe is...

avalonv

Documentation for str.count() should mention the empty string case

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This is the bug in python count() function. ```pycon >>> a="I Iove python" >>> b=a.count("") >>> print(b) ``` So normally count function is used to check specific word into the...

MrHaxtar

Most types with `@abstractmethod` definitions have their methods validated in `test_collections.py`, for example: 1. https://github.com/python/cpython/blame/49f61068f49747164988ffc5a442d2a63874fc17/Lib/test/test_collections.py#L1896-L1897 2. https://github.com/python/cpython/blame/49f61068f49747164988ffc5a442d2a63874fc17/Lib/test/test_collections.py#L928 But, not these three: 1. `Awaitable` 2. `Coroutine` 3. `ByteString` I will add...

sobolevn

gh-81057: Move the Allocators to _PyRuntimeState

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The global allocators were stored in 3 static global variables: `_PyMem_Raw`, `_PyMem`, and `_PyObject`. State for the "small block" allocator was stored in another 13. That makes a total of...

ericsnowcurrently

tarfile: Traversal attack vulnerability

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BPO | [21109](https://bugs.python.org/issue21109) --- | :--- Nosy | @birkenfeld, @jcea, @gustaebel, @vstinner, @taleinat, @tiran, @benjaminp, @jwilk, @ned-deily, @vadmium, @serhiy-storchaka, @psyker156, @shanxS, @epicfaace, @websurfer5 PRs | python/cpython#15244 Dependencies | bpo-17102: tarfile...

85aca32b-21ba-4ac1-923d-849a513ff3c0

gh-99127: Port syslog module to use module state.

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* Issue: gh-99127

corona10