Mailman 3 June 2015 - Python-Dev

Summary of Python tracker Issues
by Python tracker 19 Jun '15

19 Jun '15

ACTIVITY SUMMARY (2015-06-12 - 2015-06-19) Python tracker at http://bugs.python.org/ To view or respond to any of the issues listed below, click on the issue. Do NOT respond to this message. Issues counts and deltas: open 4892 ( +8) closed 31342 (+25) total 36234 (+33) Open issues with patches: 2244 Issues opened (21) ================== #24444: In argparse empty choices cannot be printed in the help http://bugs.python.org/issue24444 opened by py.user #24447: tab indentation breaks in tokenize.untokenize http://bugs.python.org/issue24447 opened by gumblex #24448: Syntax highlighting marks multiline comments as strings http://bugs.python.org/issue24448 opened by irdb #24450: Add gi_yieldfrom calculated property to generator object http://bugs.python.org/issue24450 opened by bennoleslie #24451: Add metrics to future objects (concurrent or asyncio?) http://bugs.python.org/issue24451 opened by Joshua.Harlow #24452: Make webbrowser support Chrome on Mac OS X http://bugs.python.org/issue24452 opened by nedbat #24454: Improve the usability of the match object named group API http://bugs.python.org/issue24454 opened by rhettinger #24455: IDLE debugger causes crash if not quitted properly before next http://bugs.python.org/issue24455 opened by irdb #24456: audioop.adpcm2lin Buffer Over-read http://bugs.python.org/issue24456 opened by JohnLeitch #24457: audioop.lin2adpcm Buffer Over-read http://bugs.python.org/issue24457 opened by JohnLeitch #24458: Documentation for PEP 489 http://bugs.python.org/issue24458 opened by encukou #24459: Mention PYTHONFAULTHANDLER in the man page http://bugs.python.org/issue24459 opened by Antony.Lee #24460: urlencode() of dictionary not as expected http://bugs.python.org/issue24460 opened by drueter(a)assyst.com #24462: bytearray.find Buffer Over-read http://bugs.python.org/issue24462 opened by JohnLeitch #24464: Got warning when compiling sqlite3 module on Mac OSX http://bugs.python.org/issue24464 opened by vajrasky #24465: Make tarfile have deterministic sorting http://bugs.python.org/issue24465 opened by samthursfield #24466: extend_path explanation in documentation is ambiguous http://bugs.python.org/issue24466 opened by alanf #24467: bytearray pop and remove Buffer Over-read http://bugs.python.org/issue24467 opened by JohnLeitch #24468: Expose compiler flag constants as code object attributes http://bugs.python.org/issue24468 opened by ncoghlan #24469: Py2.x int free list can grow without bounds http://bugs.python.org/issue24469 opened by scoder #24470: ctypes incorrect handling of long int on 64bits Linux http://bugs.python.org/issue24470 opened by Marco Clemencic Most recent 15 issues with no replies (15) ========================================== #24467: bytearray pop and remove Buffer Over-read http://bugs.python.org/issue24467 #24466: extend_path explanation in documentation is ambiguous http://bugs.python.org/issue24466 #24464: Got warning when compiling sqlite3 module on Mac OSX http://bugs.python.org/issue24464 #24458: Documentation for PEP 489 http://bugs.python.org/issue24458 #24457: audioop.lin2adpcm Buffer Over-read http://bugs.python.org/issue24457 #24456: audioop.adpcm2lin Buffer Over-read http://bugs.python.org/issue24456 #24455: IDLE debugger causes crash if not quitted properly before next http://bugs.python.org/issue24455 #24447: tab indentation breaks in tokenize.untokenize http://bugs.python.org/issue24447 #24424: xml.dom.minidom: performance issue with Node.insertBefore() http://bugs.python.org/issue24424 #24417: Type-specific documentation for __format__ methods http://bugs.python.org/issue24417 #24415: SIGINT always reset to SIG_DFL by Py_Finalize() http://bugs.python.org/issue24415 #24414: MACOSX_DEPLOYMENT_TARGET set incorrectly by configure http://bugs.python.org/issue24414 #24407: Use after free in PyDict_merge http://bugs.python.org/issue24407 #24381: Got warning when compiling ffi.c on Mac http://bugs.python.org/issue24381 #24370: OrderedDict behavior is unclear with misbehaving keys. http://bugs.python.org/issue24370 Most recent 15 issues waiting for review (15) ============================================= #24465: Make tarfile have deterministic sorting http://bugs.python.org/issue24465 #24464: Got warning when compiling sqlite3 module on Mac OSX http://bugs.python.org/issue24464 #24458: Documentation for PEP 489 http://bugs.python.org/issue24458 #24452: Make webbrowser support Chrome on Mac OS X http://bugs.python.org/issue24452 #24451: Add metrics to future objects (concurrent or asyncio?) http://bugs.python.org/issue24451 #24450: Add gi_yieldfrom calculated property to generator object http://bugs.python.org/issue24450 #24440: Move the buildslave setup information from the wiki to the dev http://bugs.python.org/issue24440 #24439: Feedback for awaitable coroutine documentation http://bugs.python.org/issue24439 #24436: _PyTraceback_Add has no const qualifier for its char * argumen http://bugs.python.org/issue24436 #24434: ItemsView.__contains__ does not mimic dict_items http://bugs.python.org/issue24434 #24426: re.split performance degraded significantly by capturing group http://bugs.python.org/issue24426 #24424: xml.dom.minidom: performance issue with Node.insertBefore() http://bugs.python.org/issue24424 #24421: Race condition compiling Modules/_math.c http://bugs.python.org/issue24421 #24420: Documentation regressions from adding subprocess.run() http://bugs.python.org/issue24420 #24416: Return a namedtuple from date.isocalendar() http://bugs.python.org/issue24416 Top 10 most discussed issues (10) ================================= #24429: msvcrt error when embedded http://bugs.python.org/issue24429 11 msgs #24400: Awaitable ABC incompatible with functools.singledispatch http://bugs.python.org/issue24400 7 msgs #24419: In argparse action append_const doesn't work for positional ar http://bugs.python.org/issue24419 7 msgs #24450: Add gi_yieldfrom calculated property to generator object http://bugs.python.org/issue24450 7 msgs #24465: Make tarfile have deterministic sorting http://bugs.python.org/issue24465 7 msgs #24412: setUpClass equivalent for addCleanup http://bugs.python.org/issue24412 6 msgs #24454: Improve the usability of the match object named group API http://bugs.python.org/issue24454 6 msgs #13501: Make libedit support more generic; port readline / libedit to http://bugs.python.org/issue13501 4 msgs #19235: Add a dedicated subclass for recursion errors http://bugs.python.org/issue19235 4 msgs #23255: SimpleHTTPRequestHandler refactor for more extensible usage. http://bugs.python.org/issue23255 4 msgs Issues closed (24) ================== #5209: nntplib needs updating to RFC 3977 http://bugs.python.org/issue5209 closed by vadmium #8232: webbrowser.open incomplete on Windows http://bugs.python.org/issue8232 closed by steve.dower #14780: urllib.request could use the default CA store http://bugs.python.org/issue14780 closed by vadmium #15745: Numerous utime ns tests fail on FreeBSD w/ ZFS (update: and Ne http://bugs.python.org/issue15745 closed by haypo #22086: Tab indent no longer works in interpreter http://bugs.python.org/issue22086 closed by r.david.murray #24175: Consistent test_utime() failures on FreeBSD http://bugs.python.org/issue24175 closed by zach.ware #24405: Missing code markup in "Expressions" documentation http://bugs.python.org/issue24405 closed by berker.peksag #24406: "Built-in Types" doc doesn't explain dict comparison. http://bugs.python.org/issue24406 closed by terry.reedy #24431: StreamWriter.drain is not callable concurrently http://bugs.python.org/issue24431 closed by gvanrossum #24435: Grammar/Grammar points to outdated guide http://bugs.python.org/issue24435 closed by berker.peksag #24437: Add information about the buildbot console view and irc notice http://bugs.python.org/issue24437 closed by r.david.murray #24438: Strange behaviour when multiplying imaginary inf by 1 http://bugs.python.org/issue24438 closed by mark.dickinson #24441: In argparse add_argument() allows the empty choices argument http://bugs.python.org/issue24441 closed by r.david.murray #24442: Readline Bindings Don't Report Any Error On Completer Function http://bugs.python.org/issue24442 closed by Perry Randall #24443: Link for clear and wait missing in EventObjects http://bugs.python.org/issue24443 closed by berker.peksag #24445: rstrip strips what it doesn't have to http://bugs.python.org/issue24445 closed by o1da #24446: imap and map inconsistent behaviour http://bugs.python.org/issue24446 closed by ned.deily #24449: Please add async write method to asyncio.StreamWriter http://bugs.python.org/issue24449 closed by gvanrossum #24453: A typo of doubled "the" words in the doc (easy fix) http://bugs.python.org/issue24453 closed by rhettinger #24461: os.environ.get treats Environt variant with double quotation m http://bugs.python.org/issue24461 closed by r.david.murray #24463: Python 3.4 bugs http://bugs.python.org/issue24463 closed by skip.montanaro #24471: Spam http://bugs.python.org/issue24471 closed by haypo #24472: Spam http://bugs.python.org/issue24472 closed by skrah #24473: Spam http://bugs.python.org/issue24473 closed by skrah

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About Python Developer Testsuites
by Arsalan Javeed (Student) 19 Jun '15

19 Jun '15

Dear Concerned, I am using python v.2.7.1 for my research work in software testing. I have already downloaded the source codes and found the built-in testsuites for running on the build. However, i was wondering if by any chance are there any testsuites which exist that are primarily meant for* developers* of the source code which can be used before releasing a build, for instance smoke testsuite/regression testsuites, besides the one already distributed with source code. If such developer testsuite exist i would request to share them. Thanking in advance for the information. -- Regards, Arsalan Javeed MS Computer Science and Engineering

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Re: [Python-Dev] cpython (merge 3.4 -> default): null merge with 3.4
by Ned Deily 16 Jun '15

16 Jun '15

In article <20150615003717.2599.82804(a)psf.io>, senthil.kumaran <python-checkins(a)python.org> wrote: > https://hg.python.org/cpython/rev/9a0c5ffe7420 > changeset: 96605:9a0c5ffe7420 > parent: 96603:47a566d6ee2a > parent: 96604:3ded282f9615 > user: Senthil Kumaran <senthil(a)uthcode.com> > date: Sun Jun 14 17:37:09 2015 -0700 > summary: > null merge with 3.4 > > Back porting changeset db302b88fdb6 to 3.4 branch, which fixed multiple > documentation typos. > > Related Issues: > #issue21528 > #issue24453 > > files: Senthil, There is now an active 3.5 branch, so the correct current order of merging is: 3.4 -> 3.5 3.5 -> default I've checked in a couple of null merges to try to fix things. -- Ned Deily, nad(a)acm.org

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Obtaining stack-frames from co-routine objects
by Ben Leslie 14 Jun '15

14 Jun '15

Hi all, Apologies in advance; I'm not a regular, and this may have been handled already (but I couldn't find it when searching). I've been using the new async/await functionality (congrats again to Yury on getting that through!), and I'd like to get a stack trace between the place at which blocking occurs and the outer co-routine. For example, consider this code: """ async def a(): await b() async def b(): await switch() @types.coroutine def switch(): yield coro_a = a() coro_a.send(None) """ At this point I'd really like to be able to somehow get a stack trace similar to: test.py:2 test.py:4 test.py:9 Using the gi_frame attribute of coro_a, I can get the line number of the outer frame (e.g.: line 2), but from there there is no way to descend the stack to reach the actual yield point. I thought that perhaps the switch() co-routine could yield the frame object returned from inspect.currentframe(), however once that function yields that frame object has f_back changed to None. A hypothetical approach would be to work the way down form the outer-frame, but that requires getting access to the co-routine object that the outer-frame is currently await-ing. Some hypothetical code could be: """ def show(coro): print("{}:{}".format(coro.gi_frame.f_code.co_filename, coro.gi_frame.f_lineno)) if dis.opname[coro.gi_code.co_code[coro.gi_frame.f_lasti + 1]] == 'YIELD_FROM': show(coro.gi_frame.f_stack[0]) """ This relies on the fact that an await-ing co-routine will be executing a YIELD_FROM instruction. The above code uses a completely hypothetical 'f_stack' property of frame objects to pull the co-routine object which a co-routine is currently await-ing from the stack. I've implemented a proof-of-concept f_stack property in the frameobject.c just to test out the above code, and it seems to work. With all that, some questions: 1) Does anyone else see value in trying to get the stack-trace down to the actual yield point? 2) Is there a different way of doing it that doesn't require changes to Python internals? 3) Assuming no to #2 is there a better way of getting the information compared to the pretty hacking byte-code/stack inspection? Thanks, Ben

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Summary of Python tracker Issues
by Python tracker 12 Jun '15

12 Jun '15

ACTIVITY SUMMARY (2015-06-05 - 2015-06-12) Python tracker at http://bugs.python.org/ To view or respond to any of the issues listed below, click on the issue. Do NOT respond to this message. Issues counts and deltas: open 4884 (+31) closed 31317 (+22) total 36201 (+53) Open issues with patches: 2239 Issues opened (40) ================== #24390: Python 3.4.3 64 bits is not "high dpi aware" http://bugs.python.org/issue24390 opened by ivb #24391: Better repr for threading objects http://bugs.python.org/issue24391 opened by serhiy.storchaka #24393: Test urllib2_localnet fails depending on host proxy configurat http://bugs.python.org/issue24393 opened by eacb #24395: webbrowser.py update to use argparse.py http://bugs.python.org/issue24395 opened by Hasan Diwan #24396: Provide convenience function for paths relative to the current http://bugs.python.org/issue24396 opened by madison.may #24397: Test asynchat makes wrong assumptions http://bugs.python.org/issue24397 opened by eacb #24398: Update test_capi to use test.support.script_helper http://bugs.python.org/issue24398 opened by bobcatfish #24400: Awaitable ABC incompatible with functools.singledispatch http://bugs.python.org/issue24400 opened by Ben.Darnell #24401: Windows 8.1 install gives DLL required to complete could not r http://bugs.python.org/issue24401 opened by lac #24402: input() uses sys.__stdout__ instead of sys.stdout for prompt http://bugs.python.org/issue24402 opened by Keita Kita #24403: Missing fixer for changed round() behavior http://bugs.python.org/issue24403 opened by priska #24405: Missing code markup in "Expressions" documentation http://bugs.python.org/issue24405 opened by Gareth.Rees #24406: "Built-in Types" documentation doesn't explain how dictionarie http://bugs.python.org/issue24406 opened by Gareth.Rees #24407: Use after free in PyDict_merge http://bugs.python.org/issue24407 opened by pkt #24408: tkinter.font.Font.measure() broken in 3.5 http://bugs.python.org/issue24408 opened by vadmium #24412: setUpClass equivalent for addCleanup http://bugs.python.org/issue24412 opened by r.david.murray #24413: Inconsistent behavior between set and dict_keys/dict_items: fo http://bugs.python.org/issue24413 opened by canjo #24414: MACOSX_DEPLOYMENT_TARGET set incorrectly by configure http://bugs.python.org/issue24414 opened by debohman #24415: SIGINT always reset to SIG_DFL by Py_Finalize() http://bugs.python.org/issue24415 opened by ABalmosan #24416: Return a namedtuple from date.isocalendar() http://bugs.python.org/issue24416 opened by bmispelon #24417: Type-specific documentation for __format__ methods http://bugs.python.org/issue24417 opened by skip.montanaro #24418: "make install" will not install pip if already present in user http://bugs.python.org/issue24418 opened by pitrou #24419: In argparse action append_const doesn't work for positional ar http://bugs.python.org/issue24419 opened by py.user #24420: Documentation regressions from adding subprocess.run() http://bugs.python.org/issue24420 opened by vadmium #24421: Race condition compiling Modules/_math.c http://bugs.python.org/issue24421 opened by vadmium #24424: xml.dom.minidom: performance issue with Node.insertBefore() http://bugs.python.org/issue24424 opened by Robert Haschke #24425: Installer Vender Issue http://bugs.python.org/issue24425 opened by Hayden Young #24426: re.split performance degraded significantly by capturing group http://bugs.python.org/issue24426 opened by Patrick Maupin #24427: subclass of multiprocessing Connection segfault upon attribute http://bugs.python.org/issue24427 opened by neologix #24429: msvcrt error when embedded http://bugs.python.org/issue24429 opened by erik flister #24430: ZipFile.read() cannot decrypt multiple members from Windows 7z http://bugs.python.org/issue24430 opened by era #24431: StreamWriter.drain is not callable concurrently http://bugs.python.org/issue24431 opened by Martin.Teichmann #24432: Upgrade windows builds to use OpenSSL 1.0.2b http://bugs.python.org/issue24432 opened by alex #24434: ItemsView.__contains__ does not mimic dict_items http://bugs.python.org/issue24434 opened by clevy #24435: Grammar/Grammar points to outdated guide http://bugs.python.org/issue24435 opened by Rosuav #24436: _PyTraceback_Add has no const qualifier for its char * argumen http://bugs.python.org/issue24436 opened by mic-e #24437: Add information about the buildbot console view and irc notice http://bugs.python.org/issue24437 opened by r.david.murray #24438: Strange behaviour when multiplying imaginary inf by 1 http://bugs.python.org/issue24438 opened by Alex Monk #24439: Feedback for awaitable coroutine documentation http://bugs.python.org/issue24439 opened by vadmium #24440: Move the buildslave setup information from the wiki to the dev http://bugs.python.org/issue24440 opened by r.david.murray Most recent 15 issues with no replies (15) ========================================== #24440: Move the buildslave setup information from the wiki to the dev http://bugs.python.org/issue24440 #24439: Feedback for awaitable coroutine documentation http://bugs.python.org/issue24439 #24435: Grammar/Grammar points to outdated guide http://bugs.python.org/issue24435 #24427: subclass of multiprocessing Connection segfault upon attribute http://bugs.python.org/issue24427 #24424: xml.dom.minidom: performance issue with Node.insertBefore() http://bugs.python.org/issue24424 #24421: Race condition compiling Modules/_math.c http://bugs.python.org/issue24421 #24419: In argparse action append_const doesn't work for positional ar http://bugs.python.org/issue24419 #24417: Type-specific documentation for __format__ methods http://bugs.python.org/issue24417 #24415: SIGINT always reset to SIG_DFL by Py_Finalize() http://bugs.python.org/issue24415 #24414: MACOSX_DEPLOYMENT_TARGET set incorrectly by configure http://bugs.python.org/issue24414 #24412: setUpClass equivalent for addCleanup http://bugs.python.org/issue24412 #24407: Use after free in PyDict_merge http://bugs.python.org/issue24407 #24406: "Built-in Types" documentation doesn't explain how dictionarie http://bugs.python.org/issue24406 #24405: Missing code markup in "Expressions" documentation http://bugs.python.org/issue24405 #24381: Got warning when compiling ffi.c on Mac http://bugs.python.org/issue24381 Most recent 15 issues waiting for review (15) ============================================= #24440: Move the buildslave setup information from the wiki to the dev http://bugs.python.org/issue24440 #24437: Add information about the buildbot console view and irc notice http://bugs.python.org/issue24437 #24436: _PyTraceback_Add has no const qualifier for its char * argumen http://bugs.python.org/issue24436 #24434: ItemsView.__contains__ does not mimic dict_items http://bugs.python.org/issue24434 #24426: re.split performance degraded significantly by capturing group http://bugs.python.org/issue24426 #24424: xml.dom.minidom: performance issue with Node.insertBefore() http://bugs.python.org/issue24424 #24420: Documentation regressions from adding subprocess.run() http://bugs.python.org/issue24420 #24416: Return a namedtuple from date.isocalendar() http://bugs.python.org/issue24416 #24408: tkinter.font.Font.measure() broken in 3.5 http://bugs.python.org/issue24408 #24406: "Built-in Types" documentation doesn't explain how dictionarie http://bugs.python.org/issue24406 #24405: Missing code markup in "Expressions" documentation http://bugs.python.org/issue24405 #24400: Awaitable ABC incompatible with functools.singledispatch http://bugs.python.org/issue24400 #24397: Test asynchat makes wrong assumptions http://bugs.python.org/issue24397 #24393: Test urllib2_localnet fails depending on host proxy configurat http://bugs.python.org/issue24393 #24391: Better repr for threading objects http://bugs.python.org/issue24391 Top 10 most discussed issues (10) ================================= #24400: Awaitable ABC incompatible with functools.singledispatch http://bugs.python.org/issue24400 26 msgs #24385: libpython27.a in python-2.7.10 i386 (windows msi release) cont http://bugs.python.org/issue24385 15 msgs #15745: Numerous utime ns tests fail on FreeBSD w/ ZFS (update: and Ne http://bugs.python.org/issue15745 13 msgs #24416: Return a namedtuple from date.isocalendar() http://bugs.python.org/issue24416 11 msgs #18003: lzma module very slow with line-oriented reading. http://bugs.python.org/issue18003 10 msgs #24391: Better repr for threading objects http://bugs.python.org/issue24391 10 msgs #20186: Derby #18: Convert 31 sites to Argument Clinic across 23 files http://bugs.python.org/issue20186 9 msgs #24429: msvcrt error when embedded http://bugs.python.org/issue24429 9 msgs #11245: Implementation of IMAP IDLE in imaplib? http://bugs.python.org/issue11245 6 msgs #13566: Increase pickle compatibility http://bugs.python.org/issue13566 6 msgs Issues closed (22) ================== #10666: OS X installer variants have confusing readline differences http://bugs.python.org/issue10666 closed by ned.deily #14287: sys.stdin.readline and KeyboardInterrupt on windows http://bugs.python.org/issue14287 closed by vadmium #18885: handle EINTR in the stdlib http://bugs.python.org/issue18885 closed by haypo #20346: Argument Clinic: missing entry in table mapping legacy convert http://bugs.python.org/issue20346 closed by taleinat #23653: Make inspect._empty test to False http://bugs.python.org/issue23653 closed by yselivanov #23891: Tutorial doesn't mention either pip or virtualenv http://bugs.python.org/issue23891 closed by akuchling #24299: 2.7.10 test__locale.py change breaks on Solaris http://bugs.python.org/issue24299 closed by serhiy.storchaka #24351: string.Template documentation incorrectly references "identifi http://bugs.python.org/issue24351 closed by barry #24362: Simplify the fast nodes resize logic in C OrderedDict. http://bugs.python.org/issue24362 closed by Arfrever #24388: Python readline module crashes in history_get on FreeBSD with http://bugs.python.org/issue24388 closed by ned.deily #24389: idle launches in cmd but not from any other method. http://bugs.python.org/issue24389 closed by zach.ware #24392: pop functioning http://bugs.python.org/issue24392 closed by steven.daprano #24394: TypeError: popitem() takes no keyword arguments http://bugs.python.org/issue24394 closed by eric.snow #24399: Backports Arch Linux support for platform.linux_distribution() http://bugs.python.org/issue24399 closed by berker.peksag #24404: Python 2.7.0's BZ2File does not support with-statements http://bugs.python.org/issue24404 closed by ned.deily #24409: PythonPROD abrt http://bugs.python.org/issue24409 closed by eric.smith #24410: set.__eq__ returns False when it should return NotImplemented http://bugs.python.org/issue24410 closed by serhiy.storchaka #24411: Drop redundant lock in queue.Queue methods qsize(), empty() an http://bugs.python.org/issue24411 closed by rhettinger #24422: base64 not encode correctly http://bugs.python.org/issue24422 closed by ezio.melotti #24423: Fix wrong indentation in Doc/whatsnew/3.5.rst http://bugs.python.org/issue24423 closed by ned.deily #24428: Import sys,getopt is having issue while taking inputs http://bugs.python.org/issue24428 closed by eric.smith #24433: There is no asyncio.ensure_future in Python 3.4.3 http://bugs.python.org/issue24433 closed by zach.ware

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What were the complaints of binary code programmers that not accept Assembly?
by françai s 12 Jun '15

12 Jun '15

Quote from: http://worrydream.com/dbx/ <http://www.google.com/url?q=http%3A%2F%2Fworrydream.com%2Fdbx%2F&sa=D&sntz=…> Reactions to SOAP and Fortran Richard Hamming -- The Art of Doing Science and Engineering, p25 (pdf book) In the beginning we programmed in absolute binary... Finally, a Symbolic Assembly Program was devised -- after more years than you are apt to believe during which most programmers continued their heroic absolute binary programming. At the time [the assembler] first appeared I would guess about 1% of the older programmers were interested in it -- using [assembly] was "sissy stuff", and a real programmer would not stoop to wasting machine capacity to do the assembly. Yes! Programmers wanted no part of it, though when pressed they had to admit their old methods used more machine time in locating and fixing up errors than the [assembler] ever used. One of the main complaints was when using a symbolic system you do not know where anything was in storage -- though in the early days we supplied a mapping of symbolic to actual storage, and believe it or not they later lovingly pored over such sheets rather than realize they did not need to know that information if they stuck to operating within the system -- no! When correcting errors they preferred to do it in absolute binary. FORTRAN was proposed by Backus and friends, and again was opposed by almost all programmers. First, it was said it could not be done. Second, if it could be done, it would be too wasteful of machine time and capacity. Third, even if it did work, no respectable programmer would use it -- it was only for sissies! John von Neumann's reaction to assembly language and Fortran John A.N. Lee, Virginia Polytechnical Institute John von Neumann, when he first heard about FORTRAN in 1954, was unimpressed and asked "why would you want more than machine language?" One of von Neumann's students at Princeton recalled that graduate students were being used to hand assemble programs into binary for their early machine. This student took time out to build an assembler, but when von Neumann found out about it he was very angry, saying that it was a waste of a valuable scientific computing instrument to use it to do clerical work. Because 1% of the older programmers that did not accept to use Assembly changed their minds about the Assembly? Because the older programmers think that using [assembly] was "sissy stuff", and a real programmer would not stoop to wasting machine capacity to do the assembly? What were all the complaints of binary code programmers that did not accept to use Assembly? John Von Neumann changed his mind about the Assembly and Fortran?

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Checklist for changing Python's grammar
by Chris Angelico 11 Jun '15

11 Jun '15

As part of a bit of hacking on CPython, I'm looking at playing with the grammar. In the source tree, Grammar/Grammar, there's a note advising me to follow the steps in PEP 306, but PEP 306 says it's been moved to the dev guide. Should the source comment be changed to point to https://docs.python.org/devguide/grammar.html ? Or is there a better canonical location for the dev guide? ChrisA

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Tracker reviews look like spam
by Terry Reedy 10 Jun '15

10 Jun '15

Gmail dumps patch review email in my junk box. The problem seems to be the spoofed From: header. Received: from psf.upfronthosting.co.za ([2a01:4f8:131:2480::3]) by mx.google.com with ESMTP id m1si26039166wjy.52.2015.05.12.00.20.38 for <tjreedy(a)udel.edu>; Tue, 12 May 2015 00:20:38 -0700 (PDT) Received-SPF: softfail (google.com: domain of transitioning storchaka(a)gmail.com does not designate 2a01:4f8:131:2480::3 as permitted sender) client-ip=2a01:4f8:131:2480::3; Tracker reviews are the only false positives in my junk list. Otherwise, I might stop reviewing. Verizon does not even deliver mail that fails its junk test, so I would not be surprised if there are people who simply do not get emailed reviews. Tracker posts are sent from Person Name <report(a)bugs.python.org> Perhaps reviews could come 'from' Person Name <review(a)bugs.python.org> Even direct tracker posts just get a neutral score. Received-SPF: neutral (google.com: 2a01:4f8:131:2480::3 is neither permitted nor denied by best guess record for domain of roundup-admin(a)psf.upfronthosting.co.za) client-ip=2a01:4f8:131:2480::3; SPF is Sender Policy Framework https://en.wikipedia.org/wiki/Sender_Policy_Framework Checkins mail, for instance, gets an SPF 'pass' because python.org designates mail.python.org as a permitted sender. -- Terry Jan Reedy

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Re: [Python-Dev] cpython (3.4): #23891: add a section to the Tutorial describing virtual environments and pip
by Antoine Pitrou 09 Jun '15

09 Jun '15

On Mon, 08 Jun 2015 21:39:17 +0000 andrew.kuchling <python-checkins(a)python.org> wrote: > https://hg.python.org/cpython/rev/15ee0e7078e3 > changeset: 96555:15ee0e7078e3 > branch: 3.4 > parent: 96552:2b78227974fa > user: Andrew Kuchling <amk(a)amk.ca> > date: Mon Jun 08 17:35:45 2015 -0400 > summary: > #23891: add a section to the Tutorial describing virtual environments and pip This is very cool, thank you! Regards Antoine.

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Fix or remove XMLParser.doctype()
by Serhiy Storchaka 08 Jun '15

08 Jun '15

There are issues with the doctype() method of XMLParser. 1. Using subclass of XMLParser emits a deprecation warning [1]. 2. There is behavior difference between Python and C implementations if implement doctype() [2]. This method was deprecated for long time, and the simplest solution is to completely remove it. The questions are: 1. Can doctype() be removed or there is significant risk to break someone's code? 2. If fix doctype() instead of removing it (in any case should be done in maintained releases), what behavior should be preserved? Should target's doctype() be called instead of XMLParser.doctype() (Python implementation) or be called in addition to XMLParser.doctype() (C implementation)? Eli suggested to ask on Python-Dev. [1] http://bugs.python.org/issue19176 [2] http://bugs.python.org/issue19176#msg238783

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