Re: Python Worst Practices
On 02/27/2015 10:36 PM, Steven D'Aprano wrote: Dan Sommers wrote: On Sat, 28 Feb 2015 12:09:31 +1100, Steven D'Aprano wrote: There's no harm in calling a local variable id, if you don't use the built-in id() inside that function. That's one of the reasons why functions exist, so that the names you use inside a function are distinct from those outside. And thank goodness for that! I've been writing Python code since 1997 and version 1.5.something,¹ and I still do a double take when emacs colors all my ids that faint blue that means builtin. Although it is not helpful for people using screen-readers, and may be of limited use to the colour-blind, I am in favour of colourising built-ins so they stand out. Sure, for the ones I use as built-ins. But I went through the color file for vim and took out the built-ins I use regularly as variables -- and 'id' was the first one to go. -- ~Ethan~ signature.asc Description: OpenPGP digital signature -- https://mail.python.org/mailman/listinfo/python-list
Re: Python Worst Practices
On Sat, 28 Feb 2015 12:09:31 +1100, Steven D'Aprano wrote: There's no harm in calling a local variable id, if you don't use the built-in id() inside that function. That's one of the reasons why functions exist, so that the names you use inside a function are distinct from those outside. And thank goodness for that! I've been writing Python code since 1997 and version 1.5.something,¹ and I still do a double take when emacs colors all my ids that faint blue that means builtin. I don't think I've ever used the builtin function id in a program. Ever. Not even once. Honestly, what is a valid use case? That said, I do have boatloads of parameters and objects locally named id because it's idiomatic (at least to me) and mnemonic (at least to me) and just as meaningful. ¹ No, not continuously. I have eaten and slept since then. -- https://mail.python.org/mailman/listinfo/python-list
[issue23254] Document how to close the TCPServer listening socket
R. David Murray added the comment: In general documentation changes go in all maintained versions (ie: right now that would be 2.7, 3.4, and default/3.5). The only exception, really, would be if the change didn't apply to one or more of the versions because of code differences. (Note: I haven't reviewed the patch itself yet ;) -- nosy: +r.david.murray versions: +Python 2.7 ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue23254 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue23512] The list of built-in functions is not alphabetical on https://docs.python.org/2/library/functions.html
Georg Brandl added the comment: I agree with Edward. The table makes no distinction between the two group of builtins, so it is confusing why it would list them not in alphabetical order. I wouldn't go so far as to call it disrespectful though :) -- nosy: +georg.brandl ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue23512 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue23382] Maybe can not shutdown ThreadPoolExecutor when call the method of shutdown
miles added the comment: The attachment includes the patch file -- keywords: +patch nosy: +milesli Added file: http://bugs.python.org/file38274/thread.py.patch ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue23382 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
Re: Python Worst Practices
On 2015-02-28 12:09, Steven D'Aprano wrote: * Make your language have a lot of keywords. Enough to make memorizing them ALL unlikely, requiring constant visits to your documentation Is 33 a lot? py import keyword py keyword.kwlist ['False', 'None', 'True', 'and', 'as', 'assert', 'break', 'class', 'continue', 'def', 'del', 'elif', 'else', 'except', 'finally', 'for', 'from', 'global', 'if', 'import', 'in', 'is', 'lambda', 'nonlocal', 'not', 'or', 'pass', 'raise', 'return', 'try', 'while', 'with', 'yield'] A quick google-and-tally for languages and their corresponding number of keywords: C: 33 C#: 77 C++: 86 Java: 50 Lua: 21 PHP: 67 Pascal: 54 Perl: 40 Pike: 37 (Just for you, ChrisA) Python: 31 (2.x) or 33 (3.x) Ruby: 40 So I can't say that Python's all that bad in comparison to most other mainstream languages, with only the austere Lua beating out Python. -tkc -- https://mail.python.org/mailman/listinfo/python-list
[issue23138] cookiejar parses cookie value as int with empty name-value pair and Expires
Changes by Berker Peksag berker.pek...@gmail.com: -- nosy: +berker.peksag ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue23138 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
Re: Python Worst Practices
On Sat, Feb 28, 2015 at 12:32 PM, sohcahto...@gmail.com wrote: For example, I've seen someone create a Socket class, then created an operator overload that allowed you to add a string to your socket to make the socket send the string, with the result being a status code indicating success or an error. Why not left shift the socket by that string, the result being the original socket? At least that has precedent... ChrisA -- https://mail.python.org/mailman/listinfo/python-list
Re: Python Worst Practices
On Friday, February 27, 2015 at 5:09:49 PM UTC-8, Steven D'Aprano wrote: Travis Griggs wrote: If I were giving a talk at SPLASH (or some other suitable polyglot conference), I might do one called Language Design Worst Practices. One of my first slides might be titled: Abuse Common Tokens in Confusing Ways * Make your language have a lot of keywords. Enough to make memorizing them ALL unlikely, requiring constant visits to your documentation Is 33 a lot? py import keyword py keyword.kwlist ['False', 'None', 'True', 'and', 'as', 'assert', 'break', 'class', 'continue', 'def', 'del', 'elif', 'else', 'except', 'finally', 'for', 'from', 'global', 'if', 'import', 'in', 'is', 'lambda', 'nonlocal', 'not', 'or', 'pass', 'raise', 'return', 'try', 'while', 'with', 'yield'] * Make sure said keywords are many of the obvious words programmers would use in their applications (map, object, bytes, dir, etc) Luckily, Python doesn't make that mistake of making built-ins keywords. That would require making actual changes to the parser each time a new built-in function was added, as well as breaking people's existing code. Fortunately, Python has a much better system: a small set of keywords, very few of which would make useful variable names (else = 23), and a much larger set of regular names in a built-in namespace. py import builtins # use __builtin__ in Python 2 py sorted(vars(builtins).keys()) ['ArithmeticError', 'AssertionError', ... 'type', 'vars', 'zip'] There's 147 of the built-ins in Python 3.3, although a few of those aren't truly built-in, merely added at interpreter startup. The ability to shadow built-ins is not a bug, it is a feature. It's an amazingly powerful feature, and not particularly newbie-friendly, but *many* things are not easy for newbies to master or avoid abusing. - Code can override, or overload, built-ins, either at the level of an entire module, or inside a particular function. - Modules can offer functions which clash with a built-in name. E.g. reprlib.repr, math.pow. - More importantly, modules can offer stable APIs with no fear that the introduction of a new built-in function will require them to change their function's name. - Which is a special case of a more general benefit, the introduction of a new built-in name does *not* break existing code that already uses that name. Newbies misuse this feature because they still have a wishful-thinking approach to programming. One example of wishful-thinking is the common newbie mistake of wondering why their loop variable never changes: # Toss a coin until you get Tails. x = random.random() while x 0.5: print Heads print Tails Isn't it obvious that I want x to get a new random number every time through the loop? I wish the computer understood me so I didn't need to write all the steps out. Likewise: int = 23 n = int(42) Isn't it obvious that the second use of int has to be the built-in function? I wish that the computer would understand from context which one I mean. Other newbie stylistic mistakes which can increase the chance of shadowing errors include: * Too many overly generic variable names like int and str. * Insufficient use of functions and too much top-level code. When they shadow a built-in, they shadow it everywhere. * Excessively large functions that do too much. By the time they reach the end of their 300 line function, they have forgotten that they have already used list for a variable name. However, even experienced developers can make this mistake too. Generally speaking, it's trivially easy to recover from. Although if you're doing it *regularly* that might be a hint of deeper problems, e.g. poor variable naming skills, too much top-level code. There's no harm in calling a local variable id, if you don't use the built-in id() inside that function. That's one of the reasons why functions exist, so that the names you use inside a function are distinct from those outside. * Design your syntax so that you can't disambiguate them contextually between bind and reference Do you have an example of where Python cannot distinguish between a binding operation and a reference? * Be sure to use it in a late bound language where no warnings will be provided about the mistake you're making at authorship time, deferring the educational experience to sundry run times Python raises a SyntaxError at compile time, not run time, if you try to bind to a keyword: py global = 23 File stdin, line 1 global = 23 ^ SyntaxError: invalid syntax -- Steven Very well-said! Just because a feature (In this case, shadowing built-in functions) can be abused or cause problems doesn't mean it's a bad feature. It reminds me of the people that rip on C++'s operator overloading because some people write bad code and
[issue22853] Multiprocessing.Queue._feed deadlocks on import
Davin Potts added the comment: Attaching a patch for 2.7 that applies Florian's fix and provides a test for it as well. Although the issue is not triggered on 3.4 or default (3.5), there is the potential for regression there -- attaching a single patch that works for both 3.4 and 3.5 to provide a regression test (only a test, nothing to fix). These patches have been tested on OS X 10.10 and Ubuntu 12.04.5 64-bit for each of 2.7, 3.4, and default (3.5). -- keywords: +patch stage: - patch review Added file: http://bugs.python.org/file38272/issue_22853_fix_and_test_import_lock_in_queue_py27.patch ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue22853 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue22853] Multiprocessing.Queue._feed deadlocks on import
Changes by Davin Potts pyt...@discontinuity.net: Added file: http://bugs.python.org/file38273/issue_22853_only_test_import_lock_in_queue_py34_and_py35.patch ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue22853 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
Re: Python Worst Practices
Dan Sommers wrote: On Sat, 28 Feb 2015 12:09:31 +1100, Steven D'Aprano wrote: There's no harm in calling a local variable id, if you don't use the built-in id() inside that function. That's one of the reasons why functions exist, so that the names you use inside a function are distinct from those outside. And thank goodness for that! I've been writing Python code since 1997 and version 1.5.something,¹ and I still do a double take when emacs colors all my ids that faint blue that means builtin. Although it is not helpful for people using screen-readers, and may be of limited use to the colour-blind, I am in favour of colourising built-ins so they stand out. On the other hand, I recall seeing an editor which rejected the idea of colour-coding built-ins, keywords etc., instead it coloured your own variables. So given: spam = 23 eggs += cheese*len(sausage) spam, eggs, cheese and sausage would be different colours. The idea being, when scanning a large code base, all the places that use a specific variable would stand out (just look for the dark green word). I don't think I've ever used the builtin function id in a program. Ever. Not even once. Honestly, what is a valid use case? Here's one. I think it's the only time I have seen id() used apart from interactive experimentation: https://code.activestate.com/recipes/577504 That said, I do have boatloads of parameters and objects locally named id because it's idiomatic (at least to me) and mnemonic (at least to me) and just as meaningful. ¹ No, not continuously. I have eaten and slept since then. Slacker! -- Steven -- https://mail.python.org/mailman/listinfo/python-list
Re: Python Worst Practices
On Sat, 28 Feb 2015 17:36:44 +1100, Steven D'Aprano wrote: Dan Sommers wrote: And thank goodness for that! I've been writing Python code since 1997 and version 1.5.something,¹ and I still do a double take when emacs colors all my ids that faint blue that means builtin. Although it is not helpful for people using screen-readers, and may be of limited use to the colour-blind, I am in favour of colourising built-ins so they stand out. Now if only emacs were clever enough *not* to colorize id when it's one of my names and not the builtin... ;-) On the other hand, I recall seeing an editor which rejected the idea of colour-coding built-ins, keywords etc., instead it coloured your own variables. So given: spam = 23 eggs += cheese*len(sausage) spam, eggs, cheese and sausage would be different colours. The idea being, when scanning a large code base, all the places that use a specific variable would stand out (just look for the dark green word). As a mostly visual person, I can see (pun intented) the logic and the value in that. I wonder how many variables could be easily distinguished, though, before running out of easily distinguishable colors. Then again, a clever underlying algorithm might choose colors based on *dissimilarity* of the identifiers, so that i and j would be very diffent colors, but spam and throat_warbler_mangrove could be the same color because they look so different anyway. I don't think I've ever used the builtin function id in a program. Ever. Not even once. Honestly, what is a valid use case? Here's one. I think it's the only time I have seen id() used apart from interactive experimentation: https://code.activestate.com/recipes/577504 Hah. Very nice. That sort of thing is probably useful for detecting self-referential objects, too (e.g., to prevent infinite output for a circular list). ¹ No, not continuously. I have eaten and slept since then. Slacker! Sorry. I'll make up the hours later, I promise! -- https://mail.python.org/mailman/listinfo/python-list
[issue23525] isbuiltin, isroutine, etc.
Changes by Berker Peksag berker.pek...@gmail.com: -- nosy: +yselivanov ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue23525 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue23544] IDLE hangs when selecting Stack View with debug active
Andrew Harrington added the comment: I was using this without looking at documentation, as a newbies would. Graying and disabling until after an exception makes sense, but even the menu item name is misleading: any time the program is running there is a stack that you might want to view. Better labels in the menu than Stack Viewer would be stack trace or stack after exception (maybe too long) or stack after crash. On Fri, Feb 27, 2015 at 4:49 PM, Terry J. Reedy rep...@bugs.python.org wrote: Terry J. Reedy added the comment: Verified on Windows whenever the debugger is active, meaning that a program is running. (Debug On just means that it will become active when code is run.) No stepping is needed; debugger can be pointing to the inital docstring line. For me also, Idle stops and has to be externally closed, as opposed to totally disappearing by itself. The doc for Stack Viewer says Show the stack traceback of the last exception. Example: 1/0 Traceback (most recent call last): File pyshell#0, line 1, in module 1/0 ZeroDivisionError: division by zero Selecting Stack Viewer pops up a viewer box. This still works after [DEBUG ON] turns the debugger on but inactive. Entering anything at the prompt disables viewing the 'last' exception, contrary to my understanding of the short doc. So I might add '(if no other code has been run)' to the doc. Selecting Stack Viewer while a program is running (sleeping in this next example) import time; time.sleep(10); 1/0 brings up a box after the exception is printed. So 'last exception' can actually be 'next exception'. But in this case, the user process is left 'running' and no ' ' prompt appears, and one must Shell - Restart to do anything further. This is not good behavior. When one selects Debug - Debugger while user code is running, Idle brings up a message box Don't debug now: You can only toggle the debugger when idle. I think Debug - Stack Viewer should be similarly disabled, though perhaps graying out the menu entry might be better. It could also be grayed out when there the 'last exception' cannot be viewed because other code has been run. Stack Viewer should definitely be ignored when the debugger is active, and I see no need to let people select it *before* an exception occurs and the prompt is displayed. The next menu entry, Auto-open Stack Viewer, takes care of opening upon future exceptions. -- stage: - needs patch title: IDLE hangs with debug on and stack viewer - IDLE hangs when selecting Stack View with debug active ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue23544 ___ -- Dr. Andrew N. Harrington Computer Science Department Graduate Program Director g...@cs.luc.edu Loyola University Chicago 529 Lewis Tower, 111 E. Pearson St. (Downtown) 104 Loyola Hall, 1032 W. Sheridan Road (Rogers Park) http://www.cs.luc.edu/~anh Phone: 312-915-7982 Fax:312-915-7998 ahar...@luc.edu (as professor, not gpd role) -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue23544 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue23530] os and multiprocessing.cpu_count do not respect cpuset/affinity
eryksun added the comment:
Well, we already expose CPU affinity:
import os
os.sched_getaffinity(0)
{0}
os.sched_getaffinity only exists on some POSIX systems, such as Linux. For
Windows, here's a ctypes version of sched_getaffinity and sched_setaffinity:
import sys
from ctypes import *
from ctypes.wintypes import *
__all__ = ['sched_getaffinity', 'sched_setaffinity']
kernel32 = WinDLL('kernel32')
DWORD_PTR = WPARAM
PDWORD_PTR = POINTER(DWORD_PTR)
GetCurrentProcess = kernel32.GetCurrentProcess
GetCurrentProcess.restype = HANDLE
OpenProcess = kernel32.OpenProcess
OpenProcess.restype = HANDLE
OpenProcess.argtypes = (DWORD, # dwDesiredAccess,_In_
BOOL, # bInheritHandle,_In_
DWORD) # dwProcessId, _In_
GetProcessAffinityMask = kernel32.GetProcessAffinityMask
GetProcessAffinityMask.argtypes = (
HANDLE, # hProcess, _In_
PDWORD_PTR, # lpProcessAffinityMask, _Out_
PDWORD_PTR) # lpSystemAffinityMask, _Out_
SetProcessAffinityMask = kernel32.SetProcessAffinityMask
SetProcessAffinityMask.argtypes = (
HANDLE,# hProcess, _In_
DWORD_PTR) # dwProcessAffinityMask, _In_
PROCESS_SET_INFORMATION = 0x0200
PROCESS_QUERY_INFORMATION = 0x0400
PROCESS_QUERY_LIMITED_INFORMATION = 0x1000
if sys.getwindowsversion().major 6:
PROCESS_QUERY_LIMITED_INFORMATION = PROCESS_QUERY_INFORMATION
def sched_getaffinity(pid):
if pid == 0:
hProcess = GetCurrentProcess()
else:
hProcess = OpenProcess(PROCESS_QUERY_LIMITED_INFORMATION,
False, pid)
if not hProcess:
raise WinError()
lpProcessAffinityMask = DWORD_PTR()
lpSystemAffinityMask = DWORD_PTR()
if not GetProcessAffinityMask(hProcess,
byref(lpProcessAffinityMask),
byref(lpSystemAffinityMask)):
raise WinError()
mask = lpProcessAffinityMask.value
return {c for c in range(sizeof(DWORD_PTR) * 8) if (1 c) mask}
def sched_setaffinity(pid, mask):
if pid == 0:
hProcess = GetCurrentProcess()
else:
hProcess = OpenProcess(PROCESS_SET_INFORMATION,
False, pid)
if not hProcess:
raise WinError()
bitmask = 0
for cpu in mask:
if not isinstance(cpu, int):
raise TypeError('expected an iterator of ints, but '
'iterator yielded %r' % type(cpu))
if cpu 0:
raise ValueError('negative CPU number')
if cpu = sizeof(DWORD_PTR) * 8:
raise ValueError('CPU number too large')
bitmask |= 1 cpu
if not SetProcessAffinityMask(hProcess, bitmask):
raise WinError()
--
nosy: +eryksun
___
Python tracker rep...@bugs.python.org
http://bugs.python.org/issue23530
___
___
Python-bugs-list mailing list
Unsubscribe:
https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue23535] os.path.join() wrong concatenation of C: on Windows
Ben Hoyt added the comment: Sorry, but this is operating as designed and documented. See the docs here: https://docs.python.org/3.4/library/os.path.html#os.path.join On Windows ... since there is a current directory for each drive, os.path.join(c:, foo) represents a path relative to the current directory on drive C: (c:foo), not c:\foo. So I think this issue should be closed as not a bug. -- nosy: +benhoyt ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue23535 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue23332] datetime.isoformat() - explicitly mark UTC string as such
mirabilos added the comment: Hm, RFCs are just RFCs and not standards, they can recommend whatever they want, and they can (and do) contradict each other. I’ve seen things (mostly related to eMail and PIM synchronisation) that require ‘Z’ for UTC proper. Additionally, +00:00 can be UTC, but it can also be British Winter Time, or DST of UTC-1. ‘Z’ is clear. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue23332 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
Re: Newbie question about text encoding
On 02/27/2015 06:54 AM, Steven D'Aprano wrote: Dave Angel wrote: On 02/27/2015 12:58 AM, Steven D'Aprano wrote: Dave Angel wrote: (Although I believe Seymour Cray was quoted as saying that virtual memory is a crock, because you can't fake what you ain't got.) If I recall correctly, disk access is about 1 times slower than RAM, so virtual memory is *at least* that much slower than real memory. It's so much more complicated than that, that I hardly know where to start. [snip technical details] As interesting as they were, none of those details will make swap faster, hence my comment that virtual memory is *at least* 1 times slower than RAM. The term virtual memory is used for many aspects of the modern memory architecture. But I presume you're using it in the sense of running in a swapfile as opposed to running in physical RAM. Yes, a page fault takes on the order of 10,000 times as long as an access to a location in L1 cache. I suspect it's a lot smaller though if the swapfile is on an SSD drive. The first byte is that slow. But once the fault is resolved, the nearby bytes are in physical memory, and some of them are in L3, L2, and L1. So you're not running in the swapfile any more. And even when you run off the end of the page, fetching the sequentially adjacent page from a hard disk is much faster. And if the disk has well designed buffering, faster yet. The OS tries pretty hard to keep the swapfile unfragmented. The trick is to minimize the number of page faults, especially to random locations. If you're getting lots of them, it's called thrashing. There are tools to help with that. To minimize page faults on code, linking with a good working-set-tuner can help, though I don't hear of people bothering these days. To minimize page faults on data, choosing one's algorithm carefully can help. For example, in scanning through a typical matrix, row order might be adjacent locations, while column order might be scattered. Not really much different than reading a text file. If you can arrange to process it a line at a time, rather than reading the whole file into memory, you generally minimize your round-trips to disk. And if you need to randomly access it, it's quite likely more efficient to memory map it, in which case it temporarily becomes part of the swapfile system. -- DaveA -- https://mail.python.org/mailman/listinfo/python-list
[issue23332] datetime.isoformat() - explicitly mark UTC string as such
Mark Lawrence added the comment: I'm a British citizen and I've never once heard the term British Winter Time, so where does it come from? -- nosy: +BreamoreBoy ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue23332 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue23471] 404 Not Found when downloading Python 3.4.3rc1 Documentation
Larry Hastings added the comment: This is part of the release process. 3.4.3 was fine last I checked, so perhaps some wonderful automated process broke it for me. 3.5, I think I simply didn't upload the docs properly. Anyway, this is my responsibility as RM for 3.4 and 3.5, so in the future if I slip up again please assign the bug to me. -- assignee: docs@python - larry ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue23471 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue23332] datetime.isoformat() - explicitly mark UTC string as such
R. David Murray added the comment:
mirabilos was referring to Alexander's reference to RFCs that advise against
using 'Z'. RFC are standards once they become formally accepted as such, and
often they become de-facto standards before formal acceptance.
Given that the method is supposedly conforming to a specific standard, it ought
to do so...but in addition to the ISO standard there are other de-jure and
de-facto standards and deviations to contend with. Concrete examples are
required for decision, I think, if the base standard is ambiguous. It may be
that a new method or a flag controlling the behavior needs to be introduced in
order to satisfy specific wide-spread use cases, but those use cases need to be
enough motivation to support such an enhancement. By my reading, so far there
have been no such concrete wide spread use cases brought forward to motivate
any change other than deprecating utcnow. ('now' must return naive datetimes
to preserve backward compatibility. If you don't want to use naive datetimes,
make sure you don't...the datetime module was originally directly supported
only naive datetimes (timezone is recent), so some care is needed.)
--
___
Python tracker rep...@bugs.python.org
http://bugs.python.org/issue23332
___
___
Python-bugs-list mailing list
Unsubscribe:
https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue23496] Steps for Android Native Build of Python 3.4.2
Stefan Krah added the comment: c) constantly working at making the latest and greatest Android-friendly But that is precisely what Android support, should it be added, means: It does take constant work (and build slaves) to support a platform. Unrelatedly, regarding the localeconv changes: I cannot find any bugreport for localeconv at https://code.google.com/p/android/issues/list . Before we add workarounds to Python, it would be nice to have at least a record that the Android developers actually *did* refuse to add a simple struct lconv (trivial for en_US!). How about opening an Android issue? -- nosy: +skrah ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue23496 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue21944] Allow copying of CodecInfo objects
Mark Lawrence added the comment: The change to codecs.py seems simple enough but would we usually use plain asserts in test code? -- nosy: +BreamoreBoy ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue21944 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue23524] Use _set_thread_local_invalid_parameter_handler in posixmodule
Larry Hastings added the comment: I turned in my Windows developer badge in 2007. Can I recuse myself, pretty-please? How about Tim Golden or Zach Ware? Who I notice are conveniently already added to the nosy list! -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue23524 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue23524] Use _set_thread_local_invalid_parameter_handler in posixmodule
STINNER Victor added the comment: I considered that, but then we'll be disabling the handler for calls into external modules (assuming whatever pyd layer exists is doing its job correctly), which is exactly where the error is most relevant. Hum ok. So I try to rephrase the issue. When Python is compiled in debug mode, the Windows C runtime (CRT) kills the process when a fault is detected. A fault can be an invalid memory access, a C assertion (assert(...);) which failed, etc. The problem is that the Python test suite explicitly call functions with invalid parameters to check that Python handles correctly errors. The problem is that unit tests expect that Python raises an exception, while the CRT kills the process by default. You propose to modify the behaviour of the CRT of the current thread in the os module to raise a regular exception, instead of killing the process. I agree with your suggestion :-) We already use _PyVerify_fd() to raises an OSError(EBADF) exception, instead of killing the process when functions like os.close() are called with an invalid file descriptor. We cannot disable globally CRT checks because users want them (#3545 and #4804) to validate their own C libraries. So CRT checks should only be disabled temporary when a Python function of the stdlib is called. We expect that calling a third party function kills the process if it is called with an invalid parameter. It's the purpose of the debug build. (I didn't review the patch yet.) Note: kill the process probably means that Windows opens a popup to ask to debug the application when a debugger is installed, instead of killing silently the application. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue23524 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue23526] Silence resource warnings in test_httplib
STINNER Victor added the comment: I applied your patch. Thanks Alex Shkop! (FYI I also added your name to Misc/ACKS.) -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue23526 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
Re: Newbie question about text encoding
On Sat, 28 Feb 2015 03:12:16 +1100, Chris Angelico wrote: On Sat, Feb 28, 2015 at 3:00 AM, alister alister.nospam.w...@ntlworld.com wrote: I think there is a case for bringing back the overlay file, or at least loading larger programs in sections only loading the routines as they are required could speed up the start time of many large applications. examples libre office, I rarely need the mail merge function, the word count and may other features that could be added into the running application on demand rather than all at once. Downside of that is twofold: firstly the complexity that I already mentioned, and secondly you pay the startup cost on first usage. So you might get into the program a bit faster, but as soon as you go to any feature you didn't already hit this session, the program pauses for a bit and loads it. Sometimes startup cost is the best time to do this sort of thing. If the modules are small enough this may not be noticeable but yes I do accept there may be delays on first usage. As to the complexity it has been my observation that as the memory footprint available to programmers has increase they have become less less skilled at writing code. of course my time as a professional programmer was over 20 years ago on 8 bit micro controllers with 8k of ROM (eventually, original I only had 2k to play with) 128 Bytes (yes bytes!) of RAM so I am very out of date. I now play with python because it is so much less demanding of me which probably makes me just a guilty :-) Of course, there is an easy way to implement exactly what you're asking for: use separate programs for everything, instead of expecting a megantic office suite[1] to do everything for you. Just get yourself a nice simple text editor, then invoke other programs - maybe from a terminal, or maybe from within the editor - to do the rest of the work. A simple disk cache will mean that previously-used programs start up quickly. Libre office was sighted as just one example Video editing suites are another that could be used as an example (perhaps more so, does the rendering engine need to be loaded until you start generating the output? a small delay here would be insignificant) ChrisA [1] It's slightly less bloated than the gigantic office suite sold by a top-end software company. -- You don't sew with a fork, so I see no reason to eat with knitting needles. -- Miss Piggy, on eating Chinese Food -- https://mail.python.org/mailman/listinfo/python-list
[issue23537] BaseSubprocessTransport includes two unused methods
STINNER Victor added the comment: Yeah, they are completly useless. Thanks for the report Martin. -- resolution: - fixed status: open - closed ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue23537 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue22853] Multiprocessing.Queue._feed deadlocks on import
Mark Lawrence added the comment: @Davin I believe that you're interested in multiprocessing issues. -- nosy: +BreamoreBoy, davin ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue22853 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue22834] Unexpected FileNotFoundError when current directory is removed
Roundup Robot added the comment: New changeset 38c503c2c066 by Brett Cannon in branch 'default': Issue #22834: Drop a redundant comment and use errno instead of an https://hg.python.org/cpython/rev/38c503c2c066 -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue22834 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue23496] Steps for Android Native Build of Python 3.4.2
Ryan Gonzalez added the comment: I'll try to do as much as I can to get this through. Once I reinstall the NDK (I accidently wiped my hard drive with a bad dd command recently), I'll test this on my old Android phone that still runs 2.3 and would be very happy if someone else can test it something newer (my laptop doesn't seem to like the Android emulator). I'll also try to do this against the development branch or tip or head or whatever it's called. I'd be very happy if someone could contribute a build slave, because I can't. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue23496 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
Re: Newbie question about text encoding
On Sat, Feb 28, 2015 at 3:45 AM, alister alister.nospam.w...@ntlworld.com wrote: On Sat, 28 Feb 2015 03:12:16 +1100, Chris Angelico wrote: On Sat, Feb 28, 2015 at 3:00 AM, alister alister.nospam.w...@ntlworld.com wrote: I think there is a case for bringing back the overlay file, or at least loading larger programs in sections only loading the routines as they are required could speed up the start time of many large applications. examples libre office, I rarely need the mail merge function, the word count and may other features that could be added into the running application on demand rather than all at once. Downside of that is twofold: firstly the complexity that I already mentioned, and secondly you pay the startup cost on first usage. So you might get into the program a bit faster, but as soon as you go to any feature you didn't already hit this session, the program pauses for a bit and loads it. Sometimes startup cost is the best time to do this sort of thing. If the modules are small enough this may not be noticeable but yes I do accept there may be delays on first usage. As to the complexity it has been my observation that as the memory footprint available to programmers has increase they have become less less skilled at writing code. Perhaps, but on the other hand, the skill of squeezing code into less memory is being replaced by other skills. We can write code that takes the simple/dumb approach, let it use an entire megabyte of memory, and not care about the cost... and we can write that in an hour, instead of spending a week fiddling with it. Reducing the development cycle time means we can add all sorts of cool features to a program, all while the original end user is still excited about it. (Of course, a comparison between today's World Wide Web and that of the 1990s suggests that these cool features aren't necessarily beneficial, but still, we have the option of foregoing austerity.) Video editing suites are another that could be used as an example (perhaps more so, does the rendering engine need to be loaded until you start generating the output? a small delay here would be insignificant) Hmm, I'm not sure that's actually a big deal, because your *data* will dwarf the code. I can fire up sox and avconv, both fairly large programs, and their code will all sit comfortably in memory; but then they get to work on my data, and suddenly my hard disk is chewing through 91GB of content. Breaking up avconv into a dozen pieces wouldn't make a dent in 91GB. ChrisA -- https://mail.python.org/mailman/listinfo/python-list
[issue23138] cookiejar parses cookie value as int with empty name-value pair and Expires
Demian Brecht added the comment: Attached is a fix that ignores the entire invalid cookie as defined in RFC 6265, Section 5.2. I'm also attaching patches for maintenance branches as it's a valid bug (NAME=VALUE pairs are required across all RFCs), although it would break backwards compatibility if the user was expecting invalid behaviour. -- keywords: +easy, patch stage: - patch review Added file: http://bugs.python.org/file38260/issue23138_tip.patch ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue23138 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue23138] cookiejar parses cookie value as int with empty name-value pair and Expires
Changes by Demian Brecht demianbre...@gmail.com: Added file: http://bugs.python.org/file38262/issue23138_27.patch ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue23138 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue23524] Use _set_thread_local_invalid_parameter_handler in posixmodule
Steve Dower added the comment: That's a pretty good summation, though it misses two points. 1. _PyVerify_fd no longer compiles. 2. The process will terminate in both release builds and debug builds. (In debug builds you also get a dialog letting you attach a debugger, unless those are suppressed as in #23314 and the test suite.) -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue23524 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue23526] Silence resource warnings in test_httplib
Alex Shkop added the comment: Thanks, great to hear. I'm glad to help) -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue23526 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue23138] cookiejar parses cookie value as int with empty name-value pair and Expires
Changes by Demian Brecht demianbre...@gmail.com: Added file: http://bugs.python.org/file38261/issue23138_34.patch ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue23138 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue23537] BaseSubprocessTransport includes two unused methods
Roundup Robot added the comment: New changeset 0b390b5a6729 by Victor Stinner in branch '3.4': Issue #23537: Remove 2 unused private methods of asyncio.BaseSubprocessTransport https://hg.python.org/cpython/rev/0b390b5a6729 -- nosy: +python-dev ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue23537 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue22834] Unexpected FileNotFoundError when current directory is removed
Brett Cannon added the comment: Thanks for catches the mistakes, guys! -- status: open - closed ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue22834 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue1322] Deprecate platform.dist() and platform.linux_distribution() functions
Andy Maier added the comment: Do we really think that a package on pypi solves the problem better? The discussion only shows that it is more likely we end up with multiple different packages on pypi, instead of one that is commonly agreed. I agree it is tough to get to an agreed upon approach, but having this in the Python base at least ensures that it is the one approach everybody uses. The /etc/os-release format seems to be used more often now, so I'm wondering why we cannot come up with a reasonable approach that is backwards compatible, supports /etc/os-release, and (if still needed), also /etc/lsb-release and the lsb_release script. Again: If we ever want to end up with just one package on pypi, that very discussion needs to happen. It seems to me that if the approach should be compatible, then we cannot use the new generic files (lsb* and os-release) first. The currently implemented approach needs to be used first. Then the new generic files. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue1322 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue22890] StringIO.StringIO pickled in 2.7 is not unpickleable on 3.x
Serhiy Storchaka added the comment: The issue is about StringIO.StringIO, not io.StringIO. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue22890 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue23496] Steps for Android Native Build of Python 3.4.2
Ethan Furman added the comment: I will work on the build slave (note: it will definitely be /work/ so if anyone has the resource and know-how to just do it, I will not be offended ;) . -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue23496 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
Re: Newbie question about text encoding
On 2015-02-27, Steven D'Aprano steve+comp.lang.pyt...@pearwood.info wrote: Dave Angel wrote: On 02/27/2015 12:58 AM, Steven D'Aprano wrote: Dave Angel wrote: (Although I believe Seymour Cray was quoted as saying that virtual memory is a crock, because you can't fake what you ain't got.) If I recall correctly, disk access is about 1 times slower than RAM, so virtual memory is *at least* that much slower than real memory. It's so much more complicated than that, that I hardly know where to start. [snip technical details] As interesting as they were, none of those details will make swap faster, hence my comment that virtual memory is *at least* 1 times slower than RAM. Nonsense. On all of my machines, virtual memory _is_ RAM almost all of the time. I don't do the type of things that force the usage of swap. -- Grant Edwards grant.b.edwardsYow! ... I want FORTY-TWO at TRYNEL FLOATATION SYSTEMS gmail.cominstalled within SIX AND A HALF HOURS!!! -- https://mail.python.org/mailman/listinfo/python-list
[issue23524] Use _set_thread_local_invalid_parameter_handler in posixmodule
Steve Dower added the comment: I considered that, but then we'll be disabling the handler for calls into external modules (assuming whatever pyd layer exists is doing its job correctly), which is exactly where the error is most relevant. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue23524 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue23496] Steps for Android Native Build of Python 3.4.2
Ethan Furman added the comment: Cyd, if you want to be a CPython/Android resource that's great. If you don't have time for it, I completely understand. What I'm hoping for is to take your initial efforts and build from there, as there are others who can take what you've started and run with it. Make no mistake, your taking the time to share what you've done is greatly appreciated. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue23496 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue23530] os and multiprocessing.cpu_count do not respect cpuset/affinity
Davin Potts added the comment: Adding an option does sound like a better possibility. Still, when I start looking through the examples that psutil provides, it reminds me how this is but one small piece of a much larger picture which psutil has done a nice, focused job of working to address. If the patch you create were to depend upon gnu coreutils, I do not think it can be accepted for licensing reasons. Interestingly psutil does not appear to depend upon that library. Regarding the docs, what text would you propose instead of what's currently there for describing cpu_count? -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue23530 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue23531] SSL operations cause entire process to hang
johnkw added the comment: Not sure what you mean. That is a standalone example. It creates the local HTTP server, which is merely a dummy listen socket. The whole point is just to have something that does a slow I/O operation, and simply not responding is sufficient for that to reproduce the bug. Also, I would add that on further investigation this occurs on cygwin, but not on Linux. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue23531 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue23471] 404 Not Found when downloading Python 3.4.3rc1 Documentation
Larry Hastings added the comment: I think I've got them all working now. Please reopen if you discover new breakage. (Or old breakage I guess if I didn't actually fix it...!) -- resolution: - fixed stage: - resolved status: open - closed ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue23471 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue23531] SSL operations cause entire process to hang
Antoine Pitrou added the comment: It creates the local HTTP server, which is merely a dummy listen socket Sorry, I hadn't noticed. Still, the example shouldn't rely on the third party requests library. Also, I would add that on further investigation this occurs on cygwin, but not on Linux. Cygwin is not a supported platform at all. Can you reproduce with an official Windows build? -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue23531 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue23496] Steps for Android Native Build of Python 3.4.2
Cyd Haselton added the comment: Stefan, I wouldn't know if they're reported to the same bug tracker...it's possible they aren't. Additionally it's possible that the lack of locale support in libc isn't considered a bug. Ethan, Given Victor's recommendation of using the dev branch and the fact that my mods were made to a stable download (3.4.2), what would be the recommended way to go about getting my efforts into github so that they can be built upon? Should I start working with the fork I've already made of cpython (with 3.4.2 as the default branch) or is there a different method I should use? -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue23496 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue23538] New Windows installer in 3.5.0a1 breaks compatibility with Wine
New submission from Link Mauve: The previous msi installer was working fine with `wine msiexec /i python*.msi`, but the new exe-based one fails with an unreadable error in latest wine. -- components: Windows messages: 236802 nosy: Link Mauve, steve.dower, tim.golden, zach.ware priority: normal severity: normal status: open title: New Windows installer in 3.5.0a1 breaks compatibility with Wine type: behavior versions: Python 3.5 ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue23538 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue23539] Content-length not set for HTTP methods expecting body when body is None
New submission from Demian Brecht:
#14721 solved setting the Content-Length header for 0-length bodies. However,
it doesn't account for cases where body is None (reported by James Rutherford
here: http://bugs.python.org/issue14721#msg236600).
One method of solving this might be something like this:
_METHODS_EXPECTING_BODIES = {'OPTIONS', 'POST', 'PUT', 'PATCH'}
if method.upper() in _METHODS_EXPECTING_BODIES and \
'content-length' not in header_names:
self._set_content_length(body)
(_set_content_length would have to be updated in order to allow for None)
This ensures that Content-Length will not be set for methods not expecting a
body.
RFC 7230, Section 3.3.2:
A user agent SHOULD NOT send a Content-Length header field when the
request message does not contain a payload body and the method
semantics do not anticipate such a body.
--
components: Library (Lib)
messages: 236803
nosy: demian.brecht
priority: normal
severity: normal
stage: needs patch
status: open
title: Content-length not set for HTTP methods expecting body when body is None
type: behavior
versions: Python 3.5
___
Python tracker rep...@bugs.python.org
http://bugs.python.org/issue23539
___
___
Python-bugs-list mailing list
Unsubscribe:
https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue23530] os and multiprocessing.cpu_count do not respect cpuset/affinity
Julian Taylor added the comment: certainly for anything that needs good control over affinity psutils is the best choice, but I'm not arguing to implement full process control in python. I only want python to provide the number of cores one can work on to make best use of the available resources. If you code search python files for cpu_count you find on github 18000 uses, randomly sampling a few every single one was to determine the number of cpus to start worker jobs to get best performance. Every one of these will oversubscribe a host that restricts the cpus a process can use. This is an issue especially for the increasingly popular use of containers instead of full virtual machines. as a documentation update I would like to have a note saying that this number is the number of (online) cpus in the system may not be the number of of cpus the process can actually use. Maybe with a link to len(psutils.Process.get_affinity()) as a reference on how to obtain that number. there would be no dependence on coreutils, I just mentioned it as you can look up the OS api you need to use to get the number there (e.g. sched_getaffinity). It is trivial API use and should not be a licensing issue, one could also look at the code from psutil which most likely looks very similar. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue23530 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue22890] StringIO.StringIO pickled in 2.7 is not unpickleable on 3.x
Mark Lawrence added the comment:
Seems fine on Windows 8.1
c:\Users\Mark\Documents\MyPythonc:\cpython\PCbuild\amd64\python.exe
Python 3.5.0a1+ (default:344d57c521b9+, Feb 27 2015, 13:39:56) [MSC v.1800 64
bit (AMD64)] on win32
Type help, copyright, credits or license for more information.
import pickle, io
pickle.dumps(io.StringIO('abc'), 2)
b'\x80\x02c_io\nStringIO\nq\x00)\x81q\x01(X\x03\x00\x00\x00abcq\x02X\x01\x00\x00\x00\nq\x03K\x00Ntq\x04b.'
pickle.loads(b'\x80\x02c_io\nStringIO\nq\x00)\x81q\x01(X\x03\x00\x00\x00abcq\x02X\x01\x00\x00\x00\nq\x03K\x00Ntq\x04b.')
_io.StringIO object at 0x004C6E604288
--
nosy: +BreamoreBoy
___
Python tracker rep...@bugs.python.org
http://bugs.python.org/issue22890
___
___
Python-bugs-list mailing list
Unsubscribe:
https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue23526] Silence resource warnings in test_httplib
Roundup Robot added the comment: New changeset 056d71d7bb28 by Victor Stinner in branch '3.4': Issue #23526: Fix ResourceWarning in test_httplib. Patch written by Alex Shkop. https://hg.python.org/cpython/rev/056d71d7bb28 -- nosy: +python-dev ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue23526 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue1322] Deprecate platform.dist() and platform.linux_distribution() functions
Changes by Andy Maier andreas.r.ma...@gmx.de: -- nosy: +andymaier ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue1322 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue14721] httplib doesn't specify content-length header for POST requests without data
Demian Brecht added the comment: Thanks for the heads up Ned. James: I've created #23539 in the event that you'd like to contribute a patch. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue14721 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue23535] os.path.join() wrong concatenation of C: on Windows
New submission from Eugene Bright: Hello! I found strange os.path.join() behavior on Windows. It works fine in common case. os.path.join(C, filename) 'C\\filename' But if first argument is C: there are no backslashes added at all! os.path.join(C:, filename) 'C:filename' But I expect two inserted backslashes... sys.version '3.4.1 |Anaconda 2.1.0 (64-bit)| (default, Sep 24 2014, 18:32:42) [MSC v.1600 64 bit (AMD64)]' Is there a bug? Thanks! -- messages: 236739 nosy: Eugene Bright priority: normal severity: normal status: open title: os.path.join() wrong concatenation of C: on Windows ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue23535 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
Re: Newbie question about text encoding
On Sat, Feb 28, 2015 at 1:02 AM, Dave Angel da...@davea.name wrote: The term virtual memory is used for many aspects of the modern memory architecture. But I presume you're using it in the sense of running in a swapfile as opposed to running in physical RAM. Given that this started with a quote about you can't fake what you ain't got, I would say that, yes, this refers to using hard disk to provide more RAM. If you're trying to use the pagefile/swapfile as if it's more memory (I have 256MB of memory, but 10GB of swap space, so that's 10GB of memory!), then yes, these performance considerations are huge. But suppose you need to run a program that's larger than your available RAM. On MS-DOS, sometimes you'd need to work with program overlays (a concept borrowed from older systems, but ones that I never worked on, so I'm going back no further than DOS here). You get a *massive* complexity hit the instant you start using them, whether your program would have been able to fit into memory on some systems or not. Just making it possible to have only part of your code in memory places demands on your code that you, the programmer, have to think about. With virtual memory, though, you just write your code as if it's all in memory, and some of it may, at some times, be on disk. Less code to debug = less time spent debugging. The performance question is largely immaterial (you'll be using the disk either way), but the savings on complexity are tremendous. And then when you do find yourself running on a system with enough RAM? No code changes needed, and full performance. That's where virtual memory shines. It's funny how the world changes, though. Back in the 90s, virtual memory was the key. No home computer ever had enough RAM. Today? A home-grade PC could easily have 16GB... and chances are you don't need all of that. So we go for the opposite optimization: disk caching. Apart from when I rebuild my Audio-Only Frozen project [1] and the caches get completely blasted through, heaps and heaps of my work can be done inside the disk cache. Hey, Sikorsky, got any files anywhere on the hard disk matching *Pastel*.iso case insensitively? *chug chug chug* Nope. Okay. Sikorsky, got any files matching *Pas5*.iso case insensitively? *zip* Yeah, here it is. I didn't tell the first search to hold all that file system data in memory; the hard drive controller managed it all for me, and I got the performance benefit. Same as the above: the main benefit is that this sort of thing requires zero application code complexity. It's all done in a perfectly generic way at a lower level. ChrisA -- https://mail.python.org/mailman/listinfo/python-list
[issue23491] PEP 441 - Improving Python Zip Application Support
Serhiy Storchaka added the comment: There is not well known old way how to make executable Python files on Windows. Add line @python -x %0 %* at the start of your Python script and rename the script to *.bat. The -x option makes Python to skip first line that is not Python, and @ forbids echoing executed command in bat-file. Could zipapp support this feature? -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue23491 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue23535] os.path.join() wrong concatenation of C: on Windows
Eric V. Smith added the comment: I agree this isn't a bug, due to per-drive current directories on Windows. -- nosy: +eric.smith resolution: - not a bug stage: - resolved status: open - closed ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue23535 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue23496] Steps for Android Native Build of Python 3.4.2
Cyd Haselton added the comment: Ethan, The binary produced runs in the KBOX environment. It can be copied between devices provided the target device has the KBOX environment installed. Victor et al, I read https://docs.python.org/devguide/devcycle.html#indevbranch a couple of times and, unless I;m missing something the dev branch only contains the 3.5 release. This may be an obvious question but if I fork the 3.4 branch would Android-related patches be eligible for that branch? I'm hesitant to clone the dev branch as I;ve worked hard to get the latest stable version (3.4.2?) working on my device; I'm more interested in a) making my efforts available to others and b) learning the Python language than c) constantly working at making the latest and greatest Android-friendly -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue23496 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue23332] datetime.isoformat() - explicitly mark UTC string as such
Mirko Vogt added the comment: The proper response to that comment probably is: It's called ISO8601 and not RFC8601. And unfortunately ISO stands for International Standard. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue23332 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue23536] Add explicit information on config file format not supporting filters
New submission from Piotr Dobrogost: It would be helpful to make it clear in section Configuration file format that it's not possible to configure filters through configuration file as opposed to dictionary passed to dictConfig() method. I found this clearly stated in Pyramid docs at http://docs.pylonsproject.org/docs/pyramid/en/latest/narr/logging.html – For more advanced filtering, the logging module provides a logging.Filter object; however it cannot be used directly from the configuration file. -- assignee: docs@python components: Documentation messages: 236741 nosy: docs@python, piotr.dobrogost, vinay.sajip priority: normal severity: normal status: open title: Add explicit information on config file format not supporting filters type: enhancement versions: Python 2.7, Python 3.6 ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue23536 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue19075] Add sorting algorithm visualization to turtledemo
Larry Hastings added the comment: This can wait for 3.5. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue19075 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue23524] Use _set_thread_local_invalid_parameter_handler in posixmodule
Steve Dower added the comment: Turns out the old code no longer compiles without this change, as the internal variable we were previously using is no longer exported from the CRT. Can I get a review please? -- nosy: +larry, serhiy.storchaka priority: high - critical type: crash - compile error ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue23524 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue23535] os.path.join() wrong concatenation of C: on Windows
Changes by Eugene Bright hex...@gmail.com: -- type: - behavior versions: +Python 3.4 ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue23535 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue23491] PEP 441 - Improving Python Zip Application Support
Paul Moore added the comment: I'm -1 on this. The whole point of having a .pyz extension is so that you don't need to use an extension that's for files containing text to hold binary data. If you want to do this, use zipapp and specify no interpreter line, then add the @python line yourself. Or just use a zip utility. Or build your own command line app. With the ability to supply an open file to create_archive, it's a 3-liner: with open(dest_filename, 'wb') as f: f.write(b'@python -x %0 %*\n') zipapp.create_archive(source_dir, f) -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue23491 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue22832] Tweak parameter names for fcntl module
Brett Cannon added the comment: The patch LGTM. Serhiy, you have anything to add? -- stage: needs patch - commit review ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue22832 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue23529] Limit decompressed data when reading from LZMAFile and BZ2File
Antoine Pitrou added the comment: LZMAFile now uses BufferedReader.peek(). The current implementation seems appropriate, but I am not comfortable with the current specification in the documentation, which says it is allowed to not return any useful data. What do you mean with useful data? peek() should always return at least one byte (except on EOF or on non-blocking streams, of course). -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue23529 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue21919] Changing cls.__bases__ must ensure proper metaclass inheritance
Mark Lawrence added the comment: @Eldar sorry that this issue slipped our net. -- nosy: +BreamoreBoy versions: +Python 3.5 -Python 3.2 ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue21919 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue23540] Proposal for asyncio: SubprocessTransport.detach() to detach a process from a transport
New submission from Martin Richard: I would like to add a detach() method to base_suprocess.BaseSuprocessTransport, which would release the underlying Popen object to the user, pretty much like socket.detach() detaches a socket object and returns the fd. The rationale is the following: the lifetime of a subprocess started using a loop is bound to that loop, or require to clause the loop without terminating the process which leads to resource leaks (the stdin/stdout pipes can't be closed). It may be useful in some cases. For instance, I create a fork of a process running a loop which started one or more subprocesses. In the child processus, I'd like to close the pipes and free the transport objects by calling: proc = transport.detach() transport.close() proc.stdin.close() proc.stdout.close() proc.stderr.close() The process is still running, in the parent process, everything looks like before the fork, the child can forget about the parent loop without fearing resource leaks. It is somewhat related to http://bugs.python.org/issue21998 (Support fork). I propose a patch which adds BaseSubprocessTransport.detach(), a specialized version for _UnixSubprocessTransport taking care of removing the callbacks from the ChildWatcher and a detach method for the pipes transports for unix and proactor. -- components: asyncio files: add-detach-to-subprocess_transport.patch keywords: patch messages: 236808 nosy: gvanrossum, haypo, martius, yselivanov priority: normal severity: normal status: open title: Proposal for asyncio: SubprocessTransport.detach() to detach a process from a transport type: enhancement versions: Python 3.3, Python 3.4, Python 3.5 Added file: http://bugs.python.org/file38263/add-detach-to-subprocess_transport.patch ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue23540 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue23539] Content-length not set for HTTP methods expecting body when body is None
James Rutherford added the comment: Thanks for setting up the new issue, I'll cook up a patch. I'm assuming this affects all Python 3.X versions but I've specifically encountered it on Python 2.7. -- nosy: +jimr versions: +Python 2.7, Python 3.2, Python 3.3, Python 3.4 ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue23539 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue22079] Ensure in PyType_Ready() that base class of static type is static
Matthias Klose added the comment: reopening, this breaks some stuff in several places ... https://bugs.launchpad.net/ubuntu/+source/terminator/+bug/1426294 -- nosy: +doko resolution: fixed - status: closed - open ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue22079 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
Re: Gaussian process regression
On Thu, 26 Feb 2015 09:59:45 -0800 (PST), jaykim.hui...@gmail.com wrote: I am trying to use Gaussian process regression for Near Infrared spectra. I have reference data(spectra), concentrations of reference data and sample data, and I am trying to predict concentrations of sample data. Here is my code. from sklearn.gaussian_process import GaussianProcess gp = GaussianProcess() gp.fit(reference, concentration) concentration_pred = gp.predict(sample) [snip] I'm sorry you're not getting help from this normally very helpful group. I'd guess that's because nobody here uses sklearn. Where did you get sklearn? Is it possible that there's an sklearn forum somewhere? I've seen many of this group's regular participants go to great lengths to help people with specialized problems, but for one of those people to help with your problem, he or she would have to find and install sklearn and learn enough about it to generate data sets on which to exercise the code you've provided. That's a lot to ask. Can you lower the activation barrier? -- To email me, substitute nowhere-runbox, invalid-com. -- https://mail.python.org/mailman/listinfo/python-list
[issue23538] New Windows installer in 3.5.0a1 breaks compatibility with Wine
Link Mauve added the comment: Maybe you could continue to distribute the msi? I’ve also heard it’s used by Windows admins to install something on many computers at once. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue23538 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue23496] Steps for Android Native Build of Python 3.4.2
Ethan Furman added the comment: I'm afraid I know next to nothing about git, so cannot help there. I would think that it wouldn't be too hard for someone (such as Ryan or myself) to forward port a set of 3.4.2 patches to 3.5 -- so whatever is easiest for you. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue23496 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue23539] Content-length not set for HTTP methods expecting body when body is None
Demian Brecht added the comment: I'm assuming this affects all Python 3.X versions but I've specifically encountered it on Python 2.7. Unless there are any core dev objections, I think it's applicable to 2.7, 3.4 and 3.5 as other minor 3.x versions are in security mode (https://docs.python.org/devguide/devcycle.html#security-branches). -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue23539 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
Re: Newbie question about text encoding
On 2015-02-27, Grant Edwards invalid@invalid.invalid wrote: On 2015-02-27, Steven D'Aprano steve+comp.lang.pyt...@pearwood.info wrote: Dave Angel wrote: On 02/27/2015 12:58 AM, Steven D'Aprano wrote: Dave Angel wrote: (Although I believe Seymour Cray was quoted as saying that virtual memory is a crock, because you can't fake what you ain't got.) If I recall correctly, disk access is about 1 times slower than RAM, so virtual memory is *at least* that much slower than real memory. It's so much more complicated than that, that I hardly know where to start. [snip technical details] As interesting as they were, none of those details will make swap faster, hence my comment that virtual memory is *at least* 1 times slower than RAM. Nonsense. On all of my machines, virtual memory _is_ RAM almost all of the time. I don't do the type of things that force the usage of swap. And on some of the embedded systems I work on, _all_ virtual memory is RAM 100.000% of the time. -- Grant Edwards grant.b.edwardsYow! Don't SANFORIZE me!! at gmail.com -- https://mail.python.org/mailman/listinfo/python-list
[issue23538] New Windows installer in 3.5.0a1 breaks compatibility with Wine
Steve Dower added the comment: The latest wine may not be up to date enough, since the new installer (and new Python) depend on MSVC 14.0, which is still only in preview. Of course, there could be other issues, but without any more information it's very difficult to act on them. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue23538 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue23538] New Windows installer in 3.5.0a1 breaks compatibility with Wine
Steve Dower added the comment: The new installer can also be used for that, and it's actually documented now (at least in the CHM - doesn't seem to have made it onto the website yet). I personally install it onto many computers at once fairly often, so I'm going to make sure that works. The old single MSI installer is completely gone though and won't be coming back. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue23538 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue23539] Content-length not set for HTTP methods expecting body when body is None
James Rutherford added the comment: OK, thanks. -- versions: -Python 3.2, Python 3.3 ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue23539 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
Re: Gaussian process regression
On 27.02.2015 18:55, Peter Pearson wrote: On Thu, 26 Feb 2015 09:59:45 -0800 (PST),jaykim.hui...@gmail.com wrote: I am trying to use Gaussian process regression for Near Infrared spectra. I have reference data(spectra), concentrations of reference data and sample data, and I am trying to predict concentrations of sample data. Here is my code. from sklearn.gaussian_process import GaussianProcess gp = GaussianProcess() gp.fit(reference, concentration) concentration_pred = gp.predict(sample) [snip] I'm sorry you're not getting help from this normally very helpful group. I'd guess that's because nobody here uses sklearn. Where did you get sklearn? Is it possible that there's an sklearn forum somewhere? http://blog.gmane.org/gmane.comp.python.scikit-learn Cheers, Fabien -- https://mail.python.org/mailman/listinfo/python-list
Re: Parallelization of Python on GPU?
Am 26.02.15 um 06:53 schrieb John Ladasky: Thanks for the various links, Ethan. I have encountered PyCUDA before, but not the other options. So far, I'm not seeing code examples which appear to do what I would like, which is simply to farm out one Python process to one GPU core. The examples all appear to parallelize array operations. I know, that's the easier way to break up a task. I may have to bite the bullet and learn how to use this: http://mklab.iti.gr/project/GPU-LIBSVM If you can get this to run on your machine, it will surely outperform any efforts what you can do with a python-CUDA bridge on your own. GPU programming is hard, and efficient GPU programming is really hard. To get an impression, this talk shows how some changes to an OpenCL program can improve the speed by 60x compared to a naive implementation: http://web.archive.org/web/20101217181349/http://developer.amd.com/zones/OpenCLZone/Events/assets/Optimizations-ImageConvolution1.pdf Christian -- https://mail.python.org/mailman/listinfo/python-list
[issue23524] Use _set_thread_local_invalid_parameter_handler in posixmodule
Steve Dower added the comment: Builds fine on Ubuntu (sample size = 1, but it's about the best I can manage myself :) ) -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue23524 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue23524] Use _set_thread_local_invalid_parameter_handler in posixmodule
Steve Dower added the comment: New patch, which should cover all the other uses of _PyVerify_fd outside of posixmodule. I've moved _PyVerify_fd into fileutils (but left _PyVerify_fd_dup2 in posixmodule, as it's basically deprecated at this point). _Py_VERIFY_FD is now in fileutils.h, and is used everywhere it makes sense. I also fixed up some error handling for _Py_fstat that was using errno on Windows rather than GetLastError() - I can split this into a separate issue if it's in the way. _Py_BEGIN/END_SUPPRESS_IPH are now in pymacro.h as they need to be after PyAPI_DATA is defined - the silent invalid parameter handler is now defined in PC/invalid_parameter_handler.c but setting and restoring it need to be in macros. Builds are fine on VS 2015 CTP 6 (with this code enabled) and VS 2013 (with the old code enabled), and I'm getting set up to test a Linux build with the patch. -- Added file: http://bugs.python.org/file38264/23524_2.patch ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue23524 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue23538] New Windows installer in 3.5.0a1 breaks compatibility with Wine
Link Mauve added the comment: I just tried it with wine-git, it doesn’t go further either by running the exe directly, or by running msiexec.exe /i on it. Is there anything else required to run it? -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue23538 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue23538] New Windows installer in 3.5.0a1 breaks compatibility with Wine
Steve Dower added the comment: You should just run it directly - it isn't an MSI. As I said, wine is probably not compatible with the new CRT version yet, but without at least an error message, it's impossible to tell. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue23538 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue23496] Steps for Android Native Build of Python 3.4.2
Cyd Haselton added the comment: Given Stephan's comments regarding Android support I'm beginning to think that I may have bitten off more than I can chew. Is there an option between 'constant work' and 'zero contribution'? I am not by any means an Android developer so the following is possibly riddled with miconceptions and errata, but, regarding locale support, I think there's a difference between 'regular' and 'native' development. Native development involves using the NDK to port various bits of C-written utilities and libraries to Android...like python... and it is where the locale is broken, because of Android's limited libc. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue23496 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
Re: Newbie question about text encoding
On Sat, 28 Feb 2015 01:22:15 +1100, Chris Angelico wrote: If you're trying to use the pagefile/swapfile as if it's more memory (I have 256MB of memory, but 10GB of swap space, so that's 10GB of memory!), then yes, these performance considerations are huge. But suppose you need to run a program that's larger than your available RAM. On MS-DOS, sometimes you'd need to work with program overlays (a concept borrowed from older systems, but ones that I never worked on, so I'm going back no further than DOS here). You get a *massive* complexity hit the instant you start using them, whether your program would have been able to fit into memory on some systems or not. Just making it possible to have only part of your code in memory places demands on your code that you, the programmer, have to think about. With virtual memory, though, you just write your code as if it's all in memory, and some of it may, at some times, be on disk. Less code to debug = less time spent debugging. The performance question is largely immaterial (you'll be using the disk either way), but the savings on complexity are tremendous. And then when you do find yourself running on a system with enough RAM? No code changes needed, and full performance. That's where virtual memory shines. ChrisA I think there is a case for bringing back the overlay file, or at least loading larger programs in sections only loading the routines as they are required could speed up the start time of many large applications. examples libre office, I rarely need the mail merge function, the word count and may other features that could be added into the running application on demand rather than all at once. obviously with large memory virtual mem there is no need to un-install them once loaded. -- Ralph's Observation: It is a mistake to let any mechanical object realise that you are in a hurry. -- https://mail.python.org/mailman/listinfo/python-list
[issue22832] Tweak parameter names for fcntl module
Serhiy Storchaka added the comment: I found a lot of not related issues in the documentation. -- nosy: +r.david.murray ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue22832 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue23534] `test_longdouble` fails on Mac when using system libffi (version 3.1)
Ronald Oussoren added the comment: On OSX the internal copy of libffi that's used is based on the one in PyObjC, which in turn is based on the version of libffi on opensource.apple.com (IIRC with some small patches that fix minor issues found by the PyObjC testsuite). -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue23534 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue23524] Use _set_thread_local_invalid_parameter_handler in posixmodule
STINNER Victor added the comment: I don't understand the issue, can you please elaborate? Can you please give an example of code which raise the bug, explain the behaviour on VS 2015 and the behaviour on VS 2015? I don't understand why changes are restricted to posixmodule.c. Much more code manipulates file descriptors. If Microsoft chose to kill a process when you pass an invalid file descriptor, why should Python behave differently? Is it only for Python unit test? If the problem only occurs with unit tests, why not only changing the behaviour with test.support.SuppressCrashReporter? -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue23524 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue23496] Steps for Android Native Build of Python 3.4.2
Stefan Krah added the comment: BTW, PEP 11 now demands a stable buildbot for official platform support (IMO a very sane policy). -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue23496 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue23524] Use _set_thread_local_invalid_parameter_handler in posixmodule
Serhiy Storchaka added the comment: May be include this in Py_BEGIN_ALLOW_THREADS / Py_END_ALLOW_THREADS? -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue23524 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue23496] Steps for Android Native Build of Python 3.4.2
R. David Murray added the comment: Most of us fall toward the lower end of constant work and zero contribution, honestly, since the majority of us are doing it in spare time and not getting paid for it. What is needed is a long-term commitment to fix bugs if they show up when new changes are made to CPython. Which is where a buildbot is fairly critical...and I have no idea how complicated it will be to set up a buildbot for your environment. I think it should be possible, though, since buildbot and twisted are written in python. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue23496 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue23524] Use _set_thread_local_invalid_parameter_handler in posixmodule
Steve Dower added the comment: Larry - this may hold up the next release, so just keeping you in the loop. You don't have to review (though there are many changes in shared code, so you may not be useless :) ) -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue23524 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue18382] multiprocessing's overlapped PipeConnection issues on Windows 8
Davin Potts added the comment: Steve: FWIW, it looks like a good solution to me. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue18382 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue23537] BaseSubprocessTransport includes two unused methods
New submission from Martin Richard: base_subprocess.BaseSuprocessTransport implements _make_write_subprocess_pipe_proto and _make_read_subprocess_pipe_proto. Both are private and both raise NotImplementedError. However, when I grep in tulip sources for those methods, they are never called nor overridden by subclasses of BaseSuprocessTransport. Shouldn't they be removed? -- components: asyncio messages: 236777 nosy: gvanrossum, haypo, martius, yselivanov priority: normal severity: normal status: open title: BaseSubprocessTransport includes two unused methods ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue23537 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
