[issue31665] Edit "Setting [windows] environmental variables"

Change by Eryk Sun : -- versions: +Python 3.10, Python 3.8, Python 3.9 -Python 3.6, Python 3.7 ___ Python tracker <https://bugs.python.org/issue31665> ___ ___

[issue30555] _io._WindowsConsoleIO breaks in the face of fd redirection

Eryk Sun added the comment: PR 1927 is a definite improvement. By using _get_osfhandle() instead of caching the handle value, it guarantees that access to the original console file can be saved and restored via `fd_save = dup(fd)` and `dup2(fd_save, fd)`. It also allows duping a new open

[issue27346] Implement os.readv() / os.writev() in Windows port

Eryk Sun added the comment: The need for asynchronous I/O (i.e. FILE_FLAG_OVERLAPPED) with ReadFileScatter() and WriteFileGather() makes them a poor fit for POSIX os.readv() and os.writev(), since we can't open the file with open() or os.open(). Python's socket module opens sockets

[issue29805] Support moving across filesystems in pathlib.Path, as shutil.move() does

Change by Eryk Sun : -- components: -Windows title: Pathlib.replace cannot move file to a different drive on Windows if filename different -> Support moving across filesystems in pathlib.Path, as shutil.move() does versions: +Python 3.10, Python 3.8, Python 3.9 -Python

[issue24829] Use interactive input even if stdout is redirected

Change by Eryk Sun : -- dependencies: +Python interactive console doesn't use sys.stdin for input versions: +Python 3.10, Python 3.8, Python 3.9 -Python 3.6 ___ Python tracker <https://bugs.python.org/issue24

[issue17620] Python interactive console doesn't use sys.stdin for input

Change by Eryk Sun : -- versions: +Python 3.10, Python 3.8, Python 3.9 -Python 3.6 ___ Python tracker <https://bugs.python.org/issue17620> ___ ___ Python-bug

[issue12777] Inconsistent use of VOLUME_NAME_* with GetFinalPathNameByHandle

Eryk Sun added the comment: bpo-33016 fixed the problem with the inconsistent dwFlags argument passed to GetFinalPathNameByHandleW(). We do need the ability to get the NT name in order to implement samefile() and sameopenfile() reliably in all cases -- i.e. when the volume serial number

[issue32592] Drop support of Windows Vista and 7 in Python 3.9

Eryk Sun added the comment: PEP 11 says that "[a] new feature release X.Y.0 will support all Windows releases whose extended support phase is not yet expired". There was no such thing as Extended Security Updates (ESU) when that provision was accepted. As defined by PEP 11, extend

[issue43491] Windows filepath bug

Eryk Sun added the comment: "C:\some\path/some/file.txt" is a valid file path. The Windows file API normalizes most paths, except for verbatim paths that start with exactly "\\?\". Path normalization includes replacing forward slashes with backslashes. If you provide th

[issue27749] multiprocessing Manager error: send() called for a closed connection

Change by Eryk Sun : -- title: multprocessing errors on Windows: WriteFile() argument 1 must be int, not None; OSError: handle is closed -> multiprocessing Manager error: send() called for a closed connection type: crash -> behavior versions: +Python 3.10, Python 3.8, Pyth

[issue29586] Cannot run pip in fresh install of py 3.5.3

Eryk Sun added the comment: This issue is similar to bpo-25117 in terms of the installer failing to run Python for post-installation tasks. The complication in this case is that a subsequent repair doesn't install pip. -- versions: +Python 3.10, Python 3.8, Python 3.9 -Python 3.5

[issue29124] Freeze fails to compile on windows

Change by Eryk Sun : -- versions: +Python 3.10, Python 3.8, Python 3.9 -Python 3.5, Python 3.6, Python 3.7 ___ Python tracker <https://bugs.python.org/issue29

[issue28344] Python 3.5.2 installer hangs when run in session 0

Eryk Sun added the comment: I tested installing 3.10 in session 0 for the current user, as a user with the batch logon right. The installation succeeded. If you're running as SYSTEM, then installing for the current user doesn't see reasonable to me. I won't test that case. I tested

[issue25166] Windows AllUsers installation places uninstaller in user profile

Change by Eryk Sun : -- versions: +Python 3.10, Python 3.9 -Python 3.6, Python 3.7 ___ Python tracker <https://bugs.python.org/issue25166> ___ ___ Python-bug

[issue25117] Windows installer: precompiling stdlib fails with missing DLL errors

Eryk Sun added the comment: Maybe it's worth adding a recommendation in the docs to reboot and try to repair an installation that fails in the final stage due to ucrt not being fully installed yet, i.e. missing api-ms-win-crt-*.dll. Or maybe this case can be detected and display a message

[issue23633] Improve py launcher help, index, and doc

Eryk Sun added the comment: The current help text attempts to explain point 2, in terms of an active virtual environment, shebangs, the PY_PYTHON[2|3] environment variables, and the py.ini [defaults]. It's a lot to say succinctly in a few lines of text. A shortened URL that links

[issue36880] Returning None from a callback with restype py_object decrements None's refcount too much

Change by Eryk Sun : -- versions: +Python 3.10, Python 3.9 -Python 3.5, Python 3.6, Python 3.7 ___ Python tracker <https://bugs.python.org/issue36880> ___ ___

[issue26362] Approved API for creating a temporary file path

Eryk Sun added the comment: > So no, while unresolved, this bug report should not be closed. The implied question was whether you or the core devs on the nosy list, upon further consideration, wanted to resolve the issue by rejecting the request, but it had simply been forgotten about fo

[issue34840] dlopen() error with no error message from dlerror()

Change by Eryk Sun : -- resolution: -> not a bug stage: -> resolved status: open -> closed ___ Python tracker <https://bugs.python.org/issue34840> ___

[issue30435] Documentation either unclear or incorrect on comparisons between bytes and strings in Python 3

Change by Eryk Sun : -- type: behavior -> enhancement versions: +Python 3.10, Python 3.8, Python 3.9 -Python 3.5, Python 3.6, Python 3.7 ___ Python tracker <https://bugs.python.org/issu

[issue18017] ctypes.PyDLL documentation

Eryk Sun added the comment: I think the documentation of ctypes.PyDLL and ctypes.pythonapi is good enough as is. -- resolution: -> rejected stage: -> resolved status: open -> closed ___ Python tracker <https://bugs.python.or

[issue29688] Add support for Path.absolute()

Change by Eryk Sun : -- assignee: -> docs@python components: +Library (Lib) type: -> enhancement versions: +Python 3.10, Python 3.8, Python 3.9 -Python 3.5, Python 3.6, Python 3.7 ___ Python tracker <https://bugs.python.org/i

[issue26362] Approved API for creating a temporary file path

Eryk Sun added the comment: > The proposal in this issue is to have a public standard library API, > which I'm calling ‘tempfile.makepath’, It's a few years later, and tempfile.mktemp() still exists and works without raising a deprecation warning. Of course it's still marked as depr

[issue27886] Docs: the difference between Path.rename() and Path.replace() is not obvious

Eryk Sun added the comment: The pathlib documentation of Path.rename() says "[o]n Unix, if target exists and is a file, it will be replaced silently if the user has permission". This leaves the behavior on Windows in question. The reader has to scroll down to the correspond

[issue27886] Docs: the difference between rename and replace is not obvious

Change by Eryk Sun : -- Removed message: https://bugs.python.org/msg273845 ___ Python tracker <https://bugs.python.org/issue27886> ___ ___ Python-bugs-list mailin

[issue35883] Change invalid unicode characters to replacement characters in argv

Change by Eryk Sun : -- components: +Unicode nosy: +ezio.melotti, vstinner versions: -Python 3.5, Python 3.6, Python 3.7 ___ Python tracker <https://bugs.python.org/issue35

[issue37612] os.link(..., follow_symlinks=True) broken on Linux

Change by Eryk Sun : -- components: +Extension Modules -Library (Lib) versions: +Python 3.10 -Python 3.5, Python 3.6, Python 3.7 ___ Python tracker <https://bugs.python.org/issue37

[issue27827] pathlib is_reserved fails for some reserved paths on Windows

Change by Eryk Sun : -- stage: needs patch -> versions: +Python 3.10, Python 3.8, Python 3.9 -Python 3.5, Python 3.6 ___ Python tracker <https://bugs.python.org/issu

[issue15244] Support for opening files with FILE_SHARE_DELETE on Windows

Eryk Sun added the comment: Deleting a file in Windows 10 has been updated to try a POSIX-style delete. For a POSIX delete, the filesystem unlinks the file even it's open, whereas a classic delete only unlinks a 'deleted' file when it's closed. The filesystem has to support it. NTFS does

[issue29256] Windows select() errors out when given no fds to select on, which breaks SelectSelector

Change by Eryk Sun : -- versions: +Python 3.10, Python 3.8, Python 3.9 -Python 3.5, Python 3.6, Python 3.7 ___ Python tracker <https://bugs.python.org/issue29

[issue29657] os.symlink: FileExistsError shows wrong message

Change by Eryk Sun : -- components: +Extension Modules, Interpreter Core -Library (Lib) stage: patch review -> versions: +Python 3.10, Python 3.8, Python 3.9 -Python 3.5, Python 3.6, Python 3.7 ___ Python tracker <https://bugs.pyth

[issue15453] ctype with packed bitfields does not match native compiler

Change by Eryk Sun : -- resolution: -> duplicate stage: -> resolved status: open -> closed superseder: -> Ctypes Packing Bitfields Incorrectly - Linux ___ Python tracker <https://bugs.python

[issue22781] ctypes: Differing results between Python and C.

Change by Eryk Sun : -- stage: -> resolved status: open -> closed ___ Python tracker <https://bugs.python.org/issue22781> ___ ___ Python-bugs-list

[issue29844] Windows Python installers not installing DLL to System32/SysWOW64

Eryk Sun added the comment: "Tools/msi/README.txt" still references "%SystemRoot%\System32" and "%SystemRoot%\SysWOW64" as the location of "python3[x].dll" for all-users installs. The containing paragraph can be removed. Move the lines

[issue11429] ctypes is highly eclectic in its raw-memory support

Change by Eryk Sun : -- versions: +Python 3.10, Python 3.8, Python 3.9 -Python 3.5 ___ Python tracker <https://bugs.python.org/issue11429> ___ ___ Python-bug

[issue34780] [Windows] Hang on startup if stdin refers to a pipe with an outstanding concurrent operation on Windows

Eryk Sun added the comment: If non-disk files are made non-seekable in Windows, this will also resolve bpo-42602. -- ___ Python tracker <https://bugs.python.org/issue34

[issue40540] inconstent stdin buffering/seeking behaviour

Change by Eryk Sun : -- resolution: -> duplicate stage: -> resolved status: open -> closed superseder: -> seekable() returns True on pipe objects in Windows ___ Python tracker <https://bugs.python

[issue34780] [Windows] Hang on startup if stdin refers to a pipe with an outstanding concurrent operation on Windows

Eryk Sun added the comment: Console input handles pose the same risk of hanging indefinitely when io.FileIO is used in legacy standard I/O mode (i.e. PYTHONLEGACYWINDOWSSTDIO). Seeking could simply be disallowed on all files that aren't FILE_TYPE_DISK. For example, change portable_lseek

[issue26882] The Python process stops responding immediately after starting

Eryk Sun added the comment: Hanging on a synchronous console file during startup shouldn't be an issue in 3.6+, since io._WindowsConsoleIO doesn't support seeking, but it could still be an issue with legacy mode, which uses io.FileIO. I'm marking this as a duplicate of bpo-34780, which has

[issue25741] Usual Installation Directory

Eryk Sun added the comment: I'm closing this issue as out of date. The tutorial now refers to the py command and also the python3.9 command from the app distribution. The patch's addition of "followed by Enter" after "Control-Z" is still needed, but it's not r

[issue24052] sys.exit(code) returns "success" to the OS for some nonzero values of code

Change by Eryk Sun : -- versions: +Python 3.10, Python 3.8, Python 3.9 -Python 3.5 ___ Python tracker <https://bugs.python.org/issue24052> ___ ___ Python-bug

[issue21518] Expose RegUnLoadKey in winreg

Eryk Sun added the comment: I added an updated implementation of windows_helper.py to the dependency bpo-22080. -- components: +Windows nosy: +paul.moore versions: +Python 3.10, Python 3.8, Python 3.9 -Python 3.5 ___ Python tracker <ht

[issue31427] Add an answer to the Windows FAQ about installing the Universal C Runtime

Change by Eryk Sun : -- title: Proposed addition to Windows FAQ -> Add an answer to the Windows FAQ about installing the Universal C Runtime versions: +Python 3.10, Python 3.8, Python 3.9 -Python 3.5, Python 3.6, Python 3.7 ___ Python trac

[issue25481] PermissionError in subprocess.check_output() when an inaccessible directory on the path

Eryk Sun added the comment: > So, two interesting questions: does this in fact match the behavior of > os._execvpe, and does it match the behavior of the shell? I think it's fine. child_exec() tries all paths. It saves the first error that's not ENOENT or ENOTDIR. The saved erro

[issue2528] Change os.access to check ACLs under Windows

Eryk Sun added the comment: With increasing use of os.access() in shutil and tempfile, it would be nice to have a real implementation of os.access() for Windows. Instead of manually evaluating the security of the file/directory, as issue2528.2.patch attempts to do, I'd rather just open

[issue38671] pathlib.Path.resolve(strict=False) returns relative path on Windows if the entry does not exist

Change by Eryk Sun : -- components: +Windows nosy: +paul.moore, steve.dower, tim.golden, zach.ware type: -> behavior versions: +Python 3.10, Python 3.9 -Python 3.6, Python 3.7 ___ Python tracker <https://bugs.python.org/issu

[issue43455] pathlib mistakenly assumes os.getcwd() is a resolved path in Windows

New submission from Eryk Sun : pathlib._WindowsFlavour.resolve() mistakenly assume that os.getcwd() returns a resolved path in Windows: s = str(path) if not s: return os.getcwd() I don't think this is a practical problem since `str(path)` should never be an empty string

[issue43448] exec() ignores scope.

Eryk Sun added the comment: exec(obj, globals(), locals()) is the same as exec(obj). Also, locals in a function scope are optimized, so the locals() dict is a snapshot. Modifying the snapshot dict doesn't modify the optimized local variables. At most I think this issue is a duplicate of bpo

[issue43397] Incorrect conversion path case with german character

Eryk Sun added the comment: ntpath.normcase() needs a platform-dependent implementation that calls LCMapStringEx() in Windows, in order to properly agree with case-insensitive Windows filesystems. See bpo-42658. -- nosy: +eryksun resolution: -> duplicate stage: -> resolved

[issue42658] os.path.normcase() is inconsistent with Windows file system

Change by Eryk Sun : -- components: +Library (Lib), Unicode nosy: +ezio.melotti, vstinner versions: +Python 3.10, Python 3.8 ___ Python tracker <https://bugs.python.org/issue42

[issue19809] Doc: subprocess should warn uses on race conditions when multiple threads spawn child processes

Eryk Sun added the comment: >> PEP 443 > > I guess that you mean the PEP 446 ;-) Yes, that's why I meant :$ -- ___ Python tracker <https://bugs.python

[issue28356] [easy doc] Document os.rename() behavior on Windows when src and dst are on different filesystems

Eryk Sun added the comment: T-VEy, this is a documentation-only issue for versions of Python that are under active development for bug fixes and enhancements -- 3.8, 3.9, and 3.10. -- versions: +Python 3.10, Python 3.8 ___ Python tracker <ht

[issue43437] venv activate bash script has wrong line endings on windows

Eryk Sun added the comment: venv copies the scripts in binary mode, but apparently the Unix "activate" script already has CRLF line endings when Python is installed in Windows. Probably the POSIX "Lib/venv/scripts/common/activate" script needs a line-ending exceptio

[issue10653] test_time test_strptime fails on windows

Eryk Sun added the comment: > Eryk Sun: This issue is now closed. If you want to enhance > the time module, please open a new issue. I was aware of that at the time, Victor. The problem can be worked on in a new issue, or in the older issue bpo-8304, which remains open. The two me

[issue8304] time.strftime() and Unicode characters on Windows

Eryk Sun added the comment: > I'm not sure of what you mean. The function is implemented: My comment was limited to Windows, for which time.tzset() has never been implemented. Since Python has its own implementation of time.tzname in Windows, it should also implement time.tzset() to al

[issue43432] Add function `clear` to the `os` module

Eryk Sun added the comment: The idea of adding some kind of clear_screen() function in the os or shutil module was discussed extensively on python-ideas a few months ago: https://mail.python.org/archives/list/python-id...@python.org/thread/EWQ2BOL3WVZAU2V2MT3HLXN3AEBHANNZ https

[issue43431] Subprocess timeout causes output to be returned as bytes in text mode

Eryk Sun added the comment: communicate() is incomplete, so decoding the output may fail. For example, say the encoding is UTF-8, and the last multibyte character sequence (2-4 bytes) is incomplete. Maybe communicate() should always set `stdout_bytes` and `stderr_bytes` attributes

[issue24800] exec docs should note that the no argument form in a local scope is really the two argument form

Eryk Sun added the comment: So there are a couple things to clarify here. When the documentation says "if the optional parts are omitted, the code is executed in the current scope", I think it should explicitly state that this is equivalent to calling exec(object, globals

[issue22790] some class attributes missing from dir(Class)

Eryk Sun added the comment: >> Why are __flags__, __basicsize__, __itemsize__, >>__dictoffset__, and __weakrefoffset__ interesting? > > I haven't said they are, but on the other hand I don't see > why consistency is a bad thing. IMO, they're not interesting because t

[issue8304] time.strftime() and Unicode characters on Windows

Eryk Sun added the comment: Update since msg255133: Python 3.8+ now calls setlocale(LC_CTYPE, "") at startup in Windows, as 3.x has always done in POSIX. So decoding the output of C strftime("%Z") with PyUnicode_DecodeLocaleAndSize() 'works' again, since both default

[issue10653] test_time test_strptime fails on windows

Eryk Sun added the comment: > decoding the output of strftime("%Z") with PyUnicode_DecodeLocaleAndSize() > works again since both agree on using the process active code page At least it works as much as it ever did. It depends on the process active code page

[issue10653] test_time test_strptime fails on windows

Eryk Sun added the comment: Update since msg243660: Python 3.8+ now calls setlocale(LC_CTYPE, "") at startup in Windows, as it has always done in POSIX, so decoding the output of strftime("%Z") with PyUnicode_DecodeLocaleAndSize() works again since both agree on using

[issue43423] Subprocess IndexError possible in _communicate

Eryk Sun added the comment: The presumption I suppose is that these statements only execute if self.stdout_thread and/or self.stderr_thread completes successfully. I suppose that the read could fail or get canceled via CancelSynchronousIo(). Of course in that case you have a bigger problem

[issue16322] time.tzname on Python 3.3.0 for Windows is decoded by wrong encoding

Eryk Sun added the comment: The solution for bpo-36779 changed init_timezone() to get tzname directly from WinAPI GetTimeZoneInformation(). Unfortunately the implementer didn't think to also support time.tzset(), so the value may be stale with no way to refresh it, or possibly different

[issue30295] msvcrt SetErrorMode not documented

Change by Eryk Sun : -- components: +Library (Lib) type: -> enhancement versions: +Python 3.10, Python 3.8, Python 3.9 -Python 3.4, Python 3.5, Python 3.6, Python 3.7 ___ Python tracker <https://bugs.python.org/issu

[issue14841] os.get_terminal_size() should check stdin as a fallback

Change by Eryk Sun : -- components: +Extension Modules, Library (Lib) versions: +Python 3.10, Python 3.9 -Python 3.4, Python 3.5, Python 3.6, Python 3.7 ___ Python tracker <https://bugs.python.org/issue14

[issue43421] os.device_encoding(fd) should support any console fd in Windows

New submission from Eryk Sun : In Windows, os.device_encoding() is hard coded to map file descriptor 0 and descriptors 1 and 2 respectively to the console's input and output code page if isatty(fd) is true. But isatty() is true for any character device, such as "NUL". Also an

[issue43414] os.get_terminal_size() should use file descriptors in Windows

New submission from Eryk Sun : Currently os.get_terminal_size() is hard coded to use the process standard handles in Windows. The function, however, is intended for arbitrary file descriptors, so should not be limited as follows: >>> f = open('conout$', 'w') >>> os

[issue24890] Windows launcher docs don't fully explain shebang semantics

Eryk Sun added the comment: In summary, the launcher documentation needs to be extended as follows: * Include an example of a shebang with a normal Windows path: #!"C:\Program Files\Python310\python.exe" Highlight the importance of quoting paths that cont

[issue28259] Ctypes bug windows

Eryk Sun added the comment: I didn't have time to look deeper into this. I'm sorry for not getting back to you. The rather-large example that you uploaded didn't and doesn't run for me, so I wasn't able to reproduce the problem. The one bit of advice I have is to always declare required

[issue27926] ctypes is too slow to convert a Python list to a C array

Change by Eryk Sun : -- versions: +Python 3.10, Python 3.8, Python 3.9 -Python 2.7, Python 3.5, Python 3.6 ___ Python tracker <https://bugs.python.org/issue27

[issue43409] [Win] Call subprocess.Popen() twice makes Thread.join() interruptible and deadlock

Eryk Sun added the comment: This is a variation on bpo-21822. If join() is called in the main thread, and it gets interrupted immediately after the lock.acquire(block, timeout) call, then subsequent calls will hang. In Windows, the acquire() call is not interruptible with Ctrl+C, so

[issue27803] ctypes automatic byref failing on custom classes attributes

Change by Eryk Sun : -- versions: +Python 3.10, Python 3.8, Python 3.9 -Python 2.7, Python 3.5 ___ Python tracker <https://bugs.python.org/issue27803> ___ ___

[issue25653] ctypes+callbacks+fork+selinux = crash

Change by Eryk Sun : -- versions: +Python 3.10, Python 3.8, Python 3.9 -Python 2.7, Python 3.2, Python 3.3, Python 3.4, Python 3.5, Python 3.6 ___ Python tracker <https://bugs.python.org/issue25

[issue8557] subprocess PATH semantics and portability

Eryk Sun added the comment: The Popen() docs begin by explaining that it has "os.execvp()-like" behavior in POSIX and uses CreateProcess() in Windows. Personally, I do not think it's proper for Python's documentation to discuss details of how CreateProcess() handles lpCommand

[issue30469] Inconsistent Execution of Generic Descriptor Attributes

Change by Eryk Sun : -- versions: +Python 3.10, Python 3.8, Python 3.9 -Python 2.7, Python 3.5, Python 3.6, Python 3.7 ___ Python tracker <https://bugs.python.org/issue30

[issue16272] C-API documentation clarification for tp_dictoffset

Change by Eryk Sun : -- type: -> enhancement versions: +Python 3.10, Python 3.8, Python 3.9 -Python 2.7, Python 3.4, Python 3.5 ___ Python tracker <https://bugs.python.org/issu

[issue16272] C-API documentation clarification for tp_dictoffset

Change by Eryk Sun : -- Removed message: https://bugs.python.org/msg221020 ___ Python tracker <https://bugs.python.org/issue16272> ___ ___ Python-bugs-list mailin

[issue29533] urllib2 works slowly with proxy on windows

Change by Eryk Sun : -- versions: +Python 3.10, Python 3.8, Python 3.9 -Python 2.7, Python 3.6 ___ Python tracker <https://bugs.python.org/issue29533> ___ ___

[issue28356] Windows: os.rename different in python 2.7.12 and python 3.5.2

Change by Eryk Sun : -- type: behavior -> enhancement versions: -Python 3.5, Python 3.6, Python 3.7 ___ Python tracker <https://bugs.python.org/issu

[issue25731] Assigning and deleting __new__ attr on the class does not allow to create instances of this class

Change by Eryk Sun : -- versions: +Python 3.10, Python 3.8, Python 3.9 -Python 2.7, Python 3.5, Python 3.6, Python 3.7 ___ Python tracker <https://bugs.python.org/issue25

[issue43395] os.path states that bytes can't represent all MBCS paths under Windows

Eryk Sun added the comment: > instead of the stated 'surrogatepass' In Python 3.6 and above, you can check this as follows: >>> sys.getfilesystemencoding() 'utf-8' >>> sys.getfilesystemencodeerrors() 'surrogatepass' In Py

[issue28712] Non-Windows mappings for a couple of Windows code pages

Change by Eryk Sun : -- versions: +Python 3.10, Python 3.8, Python 3.9 -Python 2.7, Python 3.5, Python 3.6, Python 3.7 ___ Python tracker <https://bugs.python.org/issue28

[issue29561] Interactive mode gives sys.ps2 not sys.ps1 after comment-only line

Eryk Sun added the comment: The is fixed in 3.7+. -- resolution: -> out of date stage: -> resolved status: open -> closed ___ Python tracker <https://bugs.python.or

[issue30431] input function truncates prompt by NULL byte

Change by Eryk Sun : -- components: +Interpreter Core -IO versions: +Python 3.10, Python 3.8, Python 3.9 -Python 2.7, Python 3.6, Python 3.7 ___ Python tracker <https://bugs.python.org/issue30

[issue43403] Misleading statement about bytes not being able to represent windows filenames in documentation

Eryk Sun added the comment: > lets not claim that bytes cannot represent everything on a filesystem > with an encoding. Gregory, before changing the filesystem encoding to UTF-8 in Python 3.6, the [A]NSI file API (e.g. CreateFileA) was used for bytes paths and the [W]ide character fi

[issue43403] Misleading statement about bytes not being able to represent windows filenames in documentation

Change by Eryk Sun : -- resolution: -> duplicate stage: needs patch -> resolved status: open -> closed superseder: -> os.path states that bytes can't represent all MBCS paths under Windows ___ Python tracker <https://bugs.python

[issue36021] [Security][Windows] webbrowser: WindowsDefault uses os.startfile() and so can be abused to run arbitrary commands

Change by Eryk Sun : -- versions: +Python 3.10, Python 3.9 -Python 2.7, Python 3.7 ___ Python tracker <https://bugs.python.org/issue36021> ___ ___ Python-bug

[issue39375] Document os.environ[x] = y and os.putenv() as thread unsafe

Change by Eryk Sun : -- type: -> enhancement versions: +Python 3.10 -Python 2.7, Python 3.7 ___ Python tracker <https://bugs.python.org/issue39375> ___ ___ Py

[issue23946] zero-valued timestamps are mishandled by os.stat() in Windows

Eryk Sun added the comment: For example, the named-pipe filesystem (NPFS), doesn't return timestamps for pipes in the directory listing, so the timestamps are all 0 (i.e. 1601-01-01): >>> write_time = win32file.FindFilesW('//./pipe/*')[0][3] >>> format(write_tim

[issue22107] tempfile module misinterprets access denied error on Windows

Change by Eryk Sun : -- versions: +Python 3.10, Python 3.9 -Python 2.7, Python 3.5, Python 3.6, Python 3.7 ___ Python tracker <https://bugs.python.org/issue22

[issue4928] tempfile.NamedTemporaryFile: automatic cleanup by OS

Change by Eryk Sun : -- versions: +Python 3.10, Python 3.8, Python 3.9 -Python 2.7, Python 3.5, Python 3.6 ___ Python tracker <https://bugs.python.org/issue4

[issue19809] Doc: subprocess should warn uses on race conditions when multiple threads spawn child processes

Eryk Sun added the comment: I'm closing this issue because the behavior was addressed for Python 3 in POSIX and mostly addressed in Windows (PEP 443, bpo-19764). The switch to using PROC_THREAD_ATTRIBUTE_HANDLE_LIST with subprocess.Popen() in Windows at least makes scripts safe from race

[issue29829] Documentation lacks clear warning of subprocess issue with pythonw

Eryk Sun added the comment: I forgot about the much older issue for this problem. I'm closing this issue, because the broken behavior should be fixed, not documented. -- resolution: -> duplicate stage: -> resolved status: open -> closed superseder: -> subprocess fa

[issue3905] subprocess failing in GUI applications on Windows

Eryk Sun added the comment: For whatever the reason and Windows version, it's still the case that _get_handles() should work around any bad standard handles in the current process. In bpo-25492, I suggested checking os.get_handle_inheritable(). That's too permissive. It should require

[issue20088] locale.getlocale() fails if locale name doesn't include encoding

Eryk Sun added the comment: The locale_alias database was extended to support "en_AG" and many others, but I'd still prefer Serhiy's suggestion to not guess the codeset when checking the default LC_CTYPE category. Use locale.nl_langinfo(locale.CODESET), if it's available. In Wi

[issue43395] os.path states that bytes can't represent all MBCS paths under Windows

Eryk Sun added the comment: > Vice versa, using bytes objects cannot represent all file names > on Windows (in the standard mbcs encoding), hence Windows > applications should use string objects to access all files. This is outdated advice that should be removed, or at least

[issue43364] Add shortcut to enable UTF-8 mode in start menu.

Eryk Sun added the comment: > I'm always very hesitant to modify system-wide (or user-wide) settings > like this though. I'd be more comfortable if we made it a PYTHONUTF8_310 > variable that _only_ applies to that specific version. Otherwise someone > might install an upda

[issue36067] subprocess terminate() "invalid handle" error when process is gone

Eryk Sun added the comment: > I don't understand why any patch for CPython is needed at all. If and operation on self._handle fails as an invalid handle (due to an underlying STATUS_INVALID_HANDLE or STATUS_OBJECT_TYPE_MISMATCH), then call self._handle.Detach() and re-raise the except

[issue35935] threading.Event().wait() not interruptable with Ctrl-C on Windows

Eryk Sun added the comment: Alexander, I wrote the above sample function to be slotted directly into the existing design based on the SIGINT event. I wasn't looking to rewrite everything using user-mode APCs and alertable waits. A change like that could have ramifications for applications

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