[issue39785] usr/bin/python doesn't use default python (3) on Windows

New submission from fireattack : STR 1. Install both Py2 and 3. 2. Make sure Py3 is the default. 3. (Optional) Make sure only Python3 is in path, not Python2. Run the following script from CMD: ``` #!/usr/bin/python import platform print(platform.python_version()) ``` What expected:

[issue38576] CVE-2019-18348: CRLF injection via the host part of the url passed to urlopen()

Change by Ryan Ware : -- nosy: +ware ___ Python tracker ___ ___ Python-bugs-list mailing list Unsubscribe:

[issue37266] Daemon threads must be forbidden in subinterpreters

Antoine Pitrou added the comment: Perhaps the solution would be to have an additional kind of atexit hooks, which get executed before threads are joined. -- nosy: +ncoghlan ___ Python tracker

[issue37266] Daemon threads must be forbidden in subinterpreters

Antoine Pitrou added the comment: There will be a problem with `concurrent.futures.ProcessPoolExecutor`, which currently launches its management thread as a daemon thread. The daemon thread itself is not problematic, because ProcessPoolExecutor uses an atexit hook to shutdown itself and

[issue14678] Update zipimport to support importlib.invalidate_caches()

Chris Wilcox added the comment: That is my thinking as well after rooting around a bit. I unfortunately am not knowledgable enough here to be 100% sure it is complete. -- ___ Python tracker

[issue39784] Tuple comprehension

New submission from Marco Sulla : I think a tuple comprehension could be very useful. Currently, the only way to efficiently create a tuple from a comprehension is to create a list comprehension (generator comprehensions are more slow) and convert it with `tuple()`. A tuple comprehension

[issue39783] Optimize construction of Path from other Paths by just returning the same object?

Antony Lee added the comment: Decorating __new__ with lru_cache would likely run into memory leakage problems? (one would need a "weak lru_cache", I guess). I didn't know about the _closed attribute. From a quick look it appears to only be settable by using the path (not the actual file) as

[issue27257] get_addresses results in traceback with an addrspec with an empty local part.

Change by Roundup Robot : -- keywords: +patch nosy: +python-dev nosy_count: 4.0 -> 5.0 pull_requests: +18046 stage: test needed -> patch review pull_request: https://github.com/python/cpython/pull/18687 ___ Python tracker

[issue39783] Optimize construction of Path from other Paths by just returning the same object?

Rémi Lapeyre added the comment: There is the _closed attribute thought that is mutated by some methods. -- nosy: +remi.lapeyre ___ Python tracker ___

[issue39776] Crash in decimal module in heavy-multithreaded scenario

Stefan Krah added the comment: > With python 3.7.3 without https://github.com/python/cpython/pull/5278 works > just fine. Thanks, I'm now getting the same results as you. Looking at the smaller test case, I also agree that it should work (as it did in 3.6). -- keywords:

[issue39783] Optimize construction of Path from other Paths by just returning the same object?

Raymond Hettinger added the comment: Possibly this could be done just by adding @lru_cache to the __new__() method. -- nosy: +rhettinger ___ Python tracker ___

[issue28429] ctypes fails to import with grsecurity's TPE

E. Castedo Ellerman added the comment: This is now fixed in Python 3.8. See https://bugs.python.org/issue35523 -- nosy: +E. Castedo Ellerman ___ Python tracker ___

[issue39776] Crash in decimal module in heavy-multithreaded scenario

Evgeny Boytsov added the comment: Also I understood the source of your crash with my initial example. Since you haven't used CMake to configure project, pybind didn't setup required macroses to enable threading support. So no issues in pybind. --

[issue12915] Add inspect.locate and inspect.resolve

Vinay Sajip added the comment: New changeset 4f17c5cd9a1ec50fe8de7ef68c39220a01a862cb by Vinay Sajip in branch 'master': bpo-12915: Improve Unicode support for package names and attributes. (GH-18517) https://github.com/python/cpython/commit/4f17c5cd9a1ec50fe8de7ef68c39220a01a862cb

[issue39776] Crash in decimal module in heavy-multithreaded scenario

Evgeny Boytsov added the comment: I rewrote my example without pybind and eliminated C++ module (I realized that time.sleep() also releases the GIL, so we achieve the same effect). Still the same results: with python 3.7.3 app crashes with attached ASAN output, with python 3.7.3 without

[issue39783] Optimize construction of Path from other Paths by just returning the same object?

Change by Karthikeyan Singaravelan : -- nosy: +brett.cannon, pitrou ___ Python tracker ___ ___ Python-bugs-list mailing list

[issue29076] Mac installer shell updater script silently fails if default shell is fish

Erlend Egeberg Aasland added the comment: I've created a patch that applies fine to 3.7, 3.8 and 3.9, if anyone still is interested. (Backporting to 3.6 and 2.7 is probably not going to happen, but at least the patch applies fine to both of them.) The "Versions" label list should probably

[issue39776] Crash in decimal module in heavy-multithreaded scenario

Stefan Krah added the comment: Regarding *my* issue, it could be anything, e.g. a missing call to PyEval_InitThreads() in 3.6: "Changed in version 3.7: This function is now called by Py_Initialize(), so you don’t have to call it yourself anymore." This is why we need to eliminate pybind11

[issue39776] Crash in decimal module in heavy-multithreaded scenario

Evgeny Boytsov added the comment: Your callstack is very strange. At line 30 of main.cpp GIL is obviously locked: // importing module in this tread gstate = PyGILState_Ensure(); py::module crash_test = py::module::import( "crash_test" ); <-- import PyGILState_Release( gstate );

[issue39776] Crash in decimal module in heavy-multithreaded scenario

Change by Stefan Krah : -- resolution: not a bug -> stage: resolved -> ___ Python tracker ___ ___ Python-bugs-list mailing list

[issue39776] Crash in decimal module in heavy-multithreaded scenario

Stefan Krah added the comment: Note that my pybind11 is from GitHub master, it can also be a pybind11 issue. It is interesting that you cannot reproduce your original issue with 3.6, so I'm reopening this issue. I think we need a reproducer without pybind11 though, could you tweak

[issue39776] Crash in decimal module in heavy-multithreaded scenario

Stefan Krah added the comment: This is 3.6.7, compiled --with-pydebug: $ ./main Aborted (core dumped) (gdb) bt #0 0x7f9974077428 in __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:54 #1 0x7f997407902a in __GI_abort () at abort.c:89 #2 0x0056e2d1 in

[issue1207613] Idle Editor: Bottom Scroll Bar

Change by Steven D'Aprano : -- nosy: +steven.daprano ___ Python tracker ___ ___ Python-bugs-list mailing list Unsubscribe:

[issue39783] Optimize construction of Path from other Paths by just returning the same object?

New submission from Antony Lee : Many functions which take a path-like object typically also accept strings (sorry, no hard numbers here). This means that if the function plans to call Path methods on the object, it needs to first call Path() on the arguments to convert them, well, to

[issue39782] local varible referenced a Exception won't be collected in function

New submission from Wang Jie : I referenced an Exception object in a function and found memory usage will increase constantly in the accident. I think it may be a bug. I wrote a minimal code to reproduce it. ```py from threading import local, Thread from time import sleep l = {} def t0():

[issue39712] Doc for `-X dev` option should mention PYTHONDEVMODE

Change by Erlend Egeberg Aasland : -- nosy: +erlendaasland nosy_count: 9.0 -> 10.0 pull_requests: +18045 stage: needs patch -> patch review pull_request: https://github.com/python/cpython/pull/18685 ___ Python tracker

[issue39712] Doc for `-X dev` option should mention PYTHONDEVMODE

Change by Erlend Egeberg Aasland : Added file: https://bugs.python.org/file48927/0001-3.8-bpo-39712.patch ___ Python tracker ___ ___

[issue39712] Doc for `-X dev` option should mention PYTHONDEVMODE

Change by Erlend Egeberg Aasland : -- keywords: +patch Added file: https://bugs.python.org/file48926/0001-bpo-39712.patch ___ Python tracker ___

[issue39712] Doc for `-X dev` option should mention PYTHONDEVMODE

Change by Erlend Egeberg Aasland : Added file: https://bugs.python.org/file48928/0001-3.7-bpo-39712.patch ___ Python tracker ___ ___

[issue39779] [argparse] Add parameter to sort help output arguments

brian.gallagher added the comment: That makes sense. For what it's worth, the use-case that inspired this was for commands with a lot of optional arguments in a company where a large amount of contributors (who may not be aware of an effort to order the arguments in the source code) were

[issue39775] inspect.Signature.parameters should be an OrderedDict, not a plain dict

Antony Lee added the comment: It looks good to me, thanks. -- ___ Python tracker ___ ___ Python-bugs-list mailing list

[issue34396] Certain methods that heap allocated subtypes inherit suffer a 50-80% performance penalty

Change by Inada Naoki : -- nosy: +inada.naoki ___ Python tracker ___ ___ Python-bugs-list mailing list Unsubscribe:

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