Dictionaries with variable default.
Is it possible to have a default dictionary where the default is dependant on the key? I was hoping something like this might work: m = defaultdict(lambda key: key+1) But it obviously doesn't: m[3] Traceback (most recent call last): File stdin, line 1, in module TypeError: lambda() takes exactly 1 argument (0 given) -- Antoon Pardon -- https://mail.python.org/mailman/listinfo/python-list
Re: Dictionaries with variable default.
On Mon, Nov 3, 2014 at 10:04 PM, Antoon Pardon antoon.par...@rece.vub.ac.be wrote: Is it possible to have a default dictionary where the default is dependant on the key? I was hoping something like this might work: m = defaultdict(lambda key: key+1) But it obviously doesn't: m[3] Traceback (most recent call last): File stdin, line 1, in module TypeError: lambda() takes exactly 1 argument (0 given) Yes, but not with the defaultdict. Instead, just implement __missing__: class KeyPlusOne(dict): def __missing__(self, key): return key+1 ChrisA -- https://mail.python.org/mailman/listinfo/python-list
Re: Classes
- Original Message - From: Gregory Ewing greg.ew...@canterbury.ac.nz Steven D'Aprano wrote: Like all good Pythonistas[1], we hate Java and think that getter/setter methods are pointless. But come on, they're not *wrong*, What's wrong is the statement that getters and setters are necessary to allow the implementation to change without changing the interface. That's factually incorrect in regard to Python. -- Greg I'm not sure that is what the course was stating: The advantage of following this practice is that the implementer of the class definition (often someone other than the user of the class) may restructure the organization of the data fields associated with the object while avoiding the need to rewrite code that uses the class. I agree with Steven on that one, while getters/setters are not the preferred way, they are not utterly wrong. Python uses the descriptor protocol which is basically getters and setters. It's is just hidden by a strange decorator syntax. JM -- IMPORTANT NOTICE: The contents of this email and any attachments are confidential and may also be privileged. If you are not the intended recipient, please notify the sender immediately and do not disclose the contents to any other person, use it for any purpose, or store or copy the information in any medium. Thank you. -- https://mail.python.org/mailman/listinfo/python-list
support for boost::python for build double object
In the boost::python library there is a function boost::python::long_ and this function return a boost::python::object variable I'm trying to wrap a double variale but I can't find something just like boost::python::double_ can someone help me to build a double object PS. I know there are some functions in pure python c api like PyFloat_FromDouble and after create the object I can wrap it in boost::python::object but all I want is same api from boost::python library I can't find what I want tanks. -- https://mail.python.org/mailman/listinfo/python-list
Re: support for boost::python for build double object
On Mon, Nov 3, 2014 at 7:53 AM, Joseph Shen joseph.sm...@gmail.com wrote: In the boost::python library there is a function boost::python::long_ and this function return a boost::python::object variable I'm trying to wrap a double variable but I can't find something just like boost::python::double_ can someone help me to build a double object Is there a boost::python::float_ function? If so, does it produce a 32-bit (C float) or 64-bit (C double) number? Skip -- https://mail.python.org/mailman/listinfo/python-list
Re: support for boost::python for build double object
On Monday, November 3, 2014 10:11:01 PM UTC+8, Skip Montanaro wrote: On Mon, Nov 3, 2014 at 7:53 AM, Joseph Shen joseph...@gmail.com wrote: In the boost::python library there is a function boost::python::long_ and this function return a boost::python::object variable I'm trying to wrap a double variable but I can't find something just like boost::python::double_ can someone help me to build a double object Is there a boost::python::float_ function? If so, does it produce a 32-bit (C float) or 64-bit (C double) number? Skip thanks for reply, no there is no such function like float_ or double_ or float32_ etc. I'm reading the boost source code right now to find something wish me good luck -- https://mail.python.org/mailman/listinfo/python-list
Re: Classes
On Nov 2, 2014 5:31 AM, Denis McMahon denismfmcma...@gmail.com wrote: And perhaps that also addresses the square - rectangle (or circle - ellipse) issue - square, rectangle and rhombus are all forms of quadrilateral, and perhaps should all inherit a base class Quadrilateral, rather than trying (and partially failing) to inherit each other. No, it doesn't matter whether you have square inheriting from rectangle, rhombus or quadrilateral. If the base class has mutator methods, you're still going to have this problem when they allow the object to be mutated in ways that violate the restrictions of the subclass. -- https://mail.python.org/mailman/listinfo/python-list
Re: support for boost::python for build double object
On 03/11/2014 13:53, Joseph Shen wrote: In the boost::python library there is a function boost::python::long_ and this function return a boost::python::object variable I'm trying to wrap a double variale but I can't find something just like boost::python::double_ can someone help me to build a double object PS. I know there are some functions in pure python c api like PyFloat_FromDouble and after create the object I can wrap it in boost::python::object but all I want is same api from boost::python library I can't find what I want tanks. I'm sorry that I can't help directly but try here https://mail.python.org/mailman/listinfo/cplusplus-sig which is also available as gmane.comp.python.c++ -- My fellow Pythonistas, ask not what our language can do for you, ask what you can do for our language. Mark Lawrence -- https://mail.python.org/mailman/listinfo/python-list
Re: Classes
On Tue, Nov 4, 2014 at 12:50 AM, Dennis Lee Bieber wlfr...@ix.netcom.com wrote: On Mon, 3 Nov 2014 03:12:32 + (UTC), Denis McMahon denismfmcma...@gmail.com declaimed the following: So: Quadrilateral Parallelogram Square Rectangle Rhombus Diamond (4 sides eq) Trapezoid Arrowhead Is an arrowhead a trapezoid? I'd probably indent square under rectangle, and indent diamond where it is -- both being restrictions on rectangle/rhombus But we may need another category, convex and concave; the arrowhead would fall into the concave grouping. That's fine if you're creating a taxonomical hierarchy of immutables, but neither works if you're creating a mutable class hierarchy that follows LSP. The only way you can make any of this work (as someone suggested earlier, I believe) is by having __new__ potentially return a subclass, so if you ask Parallelogram to give you one with all sides equal and all angles equal, it gives you back a Square. But since a square is a special form of rhombus as well as a special form of rectangle, you'd have to use multiple inheritance or an AST-style subclass hook to verify. Of course, if you're going down that route, you probably want to take this up a level and have a Shape class, and have the subclass hook simply check if it's four-sided as well. ChrisA -- https://mail.python.org/mailman/listinfo/python-list
Re: Installing Parsers/Tree Builders to, and accessing these packages from Python2.7
I input 'pip install html5lib' to the Python 2.7 console and got : pip install html5lib File stdin, line 1 pip install html5lib ^ SyntaxError: invalid syntax I am not sure what you mean about 'single line paragraphs'. I put my text into double line spacing in my last missive, I left the code input/ output in single line spacing as that is how it reads from the console, after all who am I to alter it? Regarding 'context' if you are referring to the text I am using, it is from 'Getting Started in Beautiful Soup' by Vineeth G. Nair. For what its worth some of the subsequent code in the book runs, but not all, and I think this may be due to the parser installation factor, and I wanted to work through the book (112 pages) without any errors being returned. -- https://mail.python.org/mailman/listinfo/python-list
Re: Installing Parsers/Tree Builders to, and accessing these packages from Python2.7
On Tue, Nov 4, 2014 at 3:27 AM, Simon Evans musicalhack...@yahoo.co.uk wrote: I input 'pip install html5lib' to the Python 2.7 console and got : pip install html5lib File stdin, line 1 pip install html5lib ^ SyntaxError: invalid syntax This should be run from your command interpreter - cmd.exe, bash, or whatever you normally run programs from. I am not sure what you mean about 'single line paragraphs'. I put my text into double line spacing in my last missive, I left the code input/ output in single line spacing as that is how it reads from the console, after all who am I to alter it? Regarding 'context' if you are referring to the text I am using, it is from 'Getting Started in Beautiful Soup' by Vineeth G. Nair. Why the double line spacing? I don't get that... and I think that's what was meant. Context in this context means quoted text from previous posts. http://en.wikipedia.org/wiki/Posting_style#Interleaved_style The parts with the angle brackets at the beginning are quoted text, providing context for what you're saying. ChrisA -- https://mail.python.org/mailman/listinfo/python-list
Re: Parsing Python dictionary with multiple objects
json_split = {}
value = {Status: Submitted, m_Controller: Python}
a = range(31)
del a[0]
for i in a:
json_split[i] = value
keys = json_split.keys()
order = list(keys)
q1 = int(round(len(keys)*0.2))
q2 = int(round(len(keys)*0.3))
q3 = int(round(len(keys)*0.5))
b = [q1,q2,q3]
n=0
threedicts = []
for i in b:
queues = order[n:n+i]
n = n+i
lists = [(queues[j], json_split.get(queues[j])) for j in range(len(queues))]
onedict = {}
for q in queues:
onedict[q] = json_split[q]
threedicts.append (onedict)
queue1, queue2, queue3 = threedicts
keys1 = queue1.keys()
for i in keys1:
queue1[i]['Priority'] = ['1']
keys2 = queue2.keys()
for j in keys2:
queue2[j]['Priority'] = ['2']
keys3 = queue3.keys()
for z in keys3:
queue3[z]['Priority'] = ['3']
I am trying to add a key value pair of (Priority:1) to queue1,
(Priority:2) to queue2, and (Priority:3) to queue3.
When I just add (Priority:1) to queue1, it works.
But when I run the above code, (Priority:3) is being added to all the
queues.
This looks trivial and I don't understand why this is happening. Is there
something wrong with what I am doing?
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Re: Installing Parsers/Tree Builders to, and accessing these packages from Python2.7
I input to the cmd console 'pip install html5lib' but again got an error return. I thought one of the participants was unhappy about single line spacing (re: single line paragraphs') Okay I will go back to single line spacing, I don't think it is all that important, really. Anyway this is my console's response:- Microsoft Windows [Version 6.1.7601] Copyright (c) 2009 Microsoft Corporation. All rights reserved. C:\Users\Intel Atompip install html5lib 'pip' is not recognized as an internal or external command, operable program or batch file. C:\Users\Intel Atom -- https://mail.python.org/mailman/listinfo/python-list
Re: Installing Parsers/Tree Builders to, and accessing these packages from Python2.7
On 03/11/2014 21:28, Simon Evans wrote: I input to the cmd console 'pip install html5lib' but again got an error return. I thought one of the participants was unhappy about single line spacing (re: single line paragraphs') Okay I will go back to single line spacing, I don't think it is all that important, really. Thank you for being so inconsiderate. Yet another single line paragraph that stretches out well over the horizon. Add that to the potential for double line spacing and all we end up with is a right mess. You've also replied without any context again. Anyway this is my console's response:- Microsoft Windows [Version 6.1.7601] Copyright (c) 2009 Microsoft Corporation. All rights reserved. C:\Users\Intel Atompip install html5lib 'pip' is not recognized as an internal or external command, operable program or batch file. C:\Users\Intel Atom Either you haven't installed pip (it comes with the Python 3.4 installer) or it's not on your path. In my installation I've pip.exe, pip3.4.exe and pip3.exe in C:\Python34\Scripts so what have you in your equivalent and what is your path set to? -- My fellow Pythonistas, ask not what our language can do for you, ask what you can do for our language. Mark Lawrence -- https://mail.python.org/mailman/listinfo/python-list
Re: Classes
Jean-Michel Pichavant wrote: I agree with Steven on that one, while getters/setters are not the preferred way, they are not utterly wrong. I'm not saying that they're wrong in general, only that they're wrong for *Python*. This matters, because the course in question is purportedly teaching Python. To make a blanket statement like that in a Python course, without pointing out that it applies *only* to some languages *other* than Python, is grossly misleading. Now it may be that the quotation is taken out of context, and the instructor did in fact point this out, but the way the paragraph is worded, it sounds like it's just been blindly lifted from some Java or C++ book. -- Greg -- https://mail.python.org/mailman/listinfo/python-list
Re: (-1)**1000
In article mailman.15076.1413990100.18130.python-l...@python.org, Ned Batchelder n...@nedbatchelder.com wrote: On 10/22/14 5:27 AM, ast wrote: Chris Angelico ros...@gmail.com a écrit dans le message de news:mailman.15058.1413968065.18130.python-l...@python.org... On Wed, Oct 22, 2014 at 7:27 PM, ast nom...@invalid.com wrote: If i am writing (-1)**1000 on a python program, will the interpreter do (-1)*(-1)*...*(-1) or something clever ? In fact i have (-1)**N with N an integer potentially big. Exponentiation is far more efficient than the naive implementation of iterated multiplication. In the very particular case of (-1)**N, I belive that Python check the odd or even parity of N and provides the result accordingly. I tried: (-1)**10 1 (-1)**11 -1 and it is instantaneous Keep in mind that actually calculating the exponentiation wouldn't do 10 multiplications anyway: the clever way to do integer powers is by squaring based on the binary representation of the exponent. It's explained here: http://stackoverflow.com/a/101613/14343 So even if Python is actually calculating the value, it's only doing 75 multiplications or so. I'm pretty sure that if we replace -1 by 2 , it never gets at its 75-th multiplication. -- Ned Batchelder, http://nedbatchelder.com Groetjes Albert -- Albert van der Horst, UTRECHT,THE NETHERLANDS Economic growth -- being exponential -- ultimately falters. albert@spearc.xs4all.nl =n http://home.hccnet.nl/a.w.m.van.der.horst -- https://mail.python.org/mailman/listinfo/python-list
Re: Classes
On Mon, 03 Nov 2014 06:29:39 +, Dan Sommers wrote: On Mon, 03 Nov 2014 03:12:32 +, Denis McMahon wrote: Quadrilateral Parallelogram Square Rectangle Rhombus Diamond (4 sides eq) Trapezoid Arrowhead What's the difference between a Diamond and a Rhombus? Oops, I was thinking a rhombus was a general parallelogram, my mistake. -- Denis McMahon, denismfmcma...@gmail.com -- https://mail.python.org/mailman/listinfo/python-list
Re: Classes
Denis McMahon wrote: On Mon, 03 Nov 2014 06:29:39 +, Dan Sommers wrote: What's the difference between a Diamond and a Rhombus? Oops, I was thinking a rhombus was a general parallelogram, my mistake. Some diamonds are neither rhombuses nor parallelograms: http://minecraft.gamepedia.com/Diamond More a sort of irregular hexagon... -- Greg -- https://mail.python.org/mailman/listinfo/python-list
Re: Classes
Jean-Michel Pichavant wrote: Python uses the descriptor protocol which is basically getters and setters. It's is just hidden by a strange decorator syntax. This is about the interface, not the implementation. Getters and setters in this context means designing the API of your class to have things like getFoo() and setFoo() in it. That's not just totally unnecessary in Python, it's counterproductive. It makes the API tedious to use for no benefit. -- Greg -- https://mail.python.org/mailman/listinfo/python-list
[issue22457] load_tests not invoked in root __init__.py when start=package root
Changes by Robert Collins robe...@robertcollins.net: Added file: http://bugs.python.org/file37118/issue22457.patch ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue22457 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue22784] test_asyncio fails without the ssl module
Antoine Pitrou added the comment: The problem is the default value for `purpose` in the function declaration (the signature mocks the ssl.create_default_context() function, so I don't think it's ok to change the default parameter value here). -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue22784 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue22650] set up and use VM for net access in the test suite
Georg Brandl added the comment: Nice! How do you plan to organize its setup? -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue22650 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue8350] Document lack of support for keyword arguments in C functions
Changes by Yongzhi Pan panyong...@gmail.com: -- nosy: +fossilet ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue8350 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue21650] add json.tool option to avoid alphabetic sort of fields
Changes by Berker Peksag berker.pek...@gmail.com: Added file: http://bugs.python.org/file37119/issue21650_v4.diff ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue21650 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue22766] collections.Counter's in-place operators should return NotImplemented for unsupported types
Ethan Furman added the comment:
I don't want to change the kind of exception being raised (an API change from
AttributeError to TypeError) without a really good reason.
Subclasses cannot work with the current implementation.
In general, in-place methods are not required to return NotImplemented (for
example, (3).__iadd__(4.5) raises an AttributeError).
AttributeError is being raised because int does not have an __iadd__ method,
not because of a problem with the float operand.
Also, I prefer the current AttributeError with its clear indication that an
items()
method is needed for duck-typing. These kind of error messages are very
helpful
when you're trying to figure-out how to duck-type on-purpose
That's what the docs are for.
(for example, {}.update(1) and {}.update([[]]) both provide the information
about
what you would need to do to get update() to work).
update is not a binary operation, so has more leeway in how it handles problems.
The current duck-typeable behavior was an intended part of the design and is
no
different from a number of other methods that update in-place.
The only problem with the design is that it does not play well with others.
For duck-typeable just do a check on 'other' to see if it has an .items()
method, and return NotImplemented if it does not. Oh, and check that 'self' is
Counter, and also return NotImplemented if that fails.
At any rate, I want to avoid unnecessary API churn (and avoid contributing to
what Guido has called a death by a thousand cuts for the growing list of
tiny
semantic differences between Python 2 and Python 3).
Not an issue in this case, as the 2.7 Counter does not have the in-place
methods.
Here's proof of subclass trouble -- the idea is to make an immutable Counter:
-
from collections import Counter
class FrozenCounter(Counter):
immutable after definition
def __add__(self, other):
new_counter = self.__class__()
for elem, count in self.items():
new_counter[elem] = count
for elem, count in other.items():
new_counter[elem] += count
return new_counter._keep_positive()
fc = FrozenCounter(abbc)
sc = FrozenCounter(bubba)
original = fc
fc += sc
assert fc == FrozenCounter(aabcu)
assert fc is not original
-
and the results:
-
Traceback (most recent call last):
File blah.py, line 20, in module
assert fc is not original
AssertionError
-
For subclassing to work, the fix is:
if not hasattr(other, 'items') or type(self) is not Counter:
return NotImplemented
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[issue6721] Locks in the standard library should be sanitized on fork
Changes by Nir Soffer nir...@gmail.com: -- nosy: +nirs ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue6721 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue22753] urllib2 localnet Changed test to lookup IP-address of localhost
Håkan Lövdahl added the comment: Yes, I can confirm that changing 'URL' to be 'http://127.0.0.1' works. I think that would be a solution to this. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue22753 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue22650] set up and use VM for net access in the test suite
R. David Murray added the comment: Why a separate domain rather than a subdomain? I'm not objecting, but I am curious. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue22650 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue22766] collections.Counter's in-place operators should return NotImplemented for unsupported types
R. David Murray added the comment:
On Mon, 03 Nov 2014 10:53:09 +, Ethan Furman rep...@bugs.python.org wrote:
Ethan Furman added the comment:
I don't want to change the kind of exception being raised (an API change
from
AttributeError to TypeError) without a really good reason.
Subclasses cannot work with the current implementation.
I don't understand this statement.
Also, I prefer the current AttributeError with its clear indication that an
items()
method is needed for duck-typing. These kind of error messages are very
helpful
when you're trying to figure-out how to duck-type on-purpose
That's what the docs are for.
That's not the way it works in real life. You implement something, it
doesn't work, and if the solution isn't obvious from the error message
*then* you look at the docs or google. But if the error message says
you can't do this, then like as not you don't even look at the docs.
(for example, {}.update(1) and {}.update([[]]) both provide the information
about
what you would need to do to get update() to work).
update is not a binary operation, so has more leeway in how it handles
problems.
As Raymond pointed out, the augmented assignment operator is a
*shortcut* for update.
The current duck-typeable behavior was an intended part of the design and
is no
different from a number of other methods that update in-place.
The only problem with the design is that it does not play well with others.
For duck-typeable just do a check on 'other' to see if it has an .items()
method, and return NotImplemented if it does not. Oh, and check that 'self'
is Counter, and also return NotImplemented if that fails.
No, that doesn't support duck typing. Duck typing is not putting
arbitrary restrictions on what objects you accept, but only essential
restrictions. And as noted above, if you return NotImplemented, then
you get an error message that essentially says this is impossible
instead of this is what didn't work.
Here's proof of subclass trouble -- the idea is to make an immutable Counter:
Your subclass doesn't override __iadd__ or any of the other mutation
methods. Why would you expect it to be immutable if it doesn't?
For subclassing to work, the fix is:
if not hasattr(other, 'items') or type(self) is not Counter:
return NotImplemented
I've never seen a type check like that in a Python class, and I hope
I never do. *That* breaks subclassing.
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[issue2504] Add gettext.pgettext() and variants support
Wichert Akkerman added the comment: Bump. Python 3 is still not on my radar, but I'll happily do a backport for Py2 and drop that on PyPI once this gets resolved. -- versions: +Python 3.3, Python 3.4, Python 3.5, Python 3.6 ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue2504 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue2504] Add gettext.pgettext() and variants support
Changes by Éric Araujo mer...@netwok.org: -- stage: patch review - needs patch versions: -Python 3.2, Python 3.3, Python 3.4, Python 3.6 ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue2504 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue22650] set up and use VM for net access in the test suite
Donald Stufft added the comment: It is configured using salt, see https://github.com/python/psf-salt/blob/master/salt/pythontest/init.sls. A separate domain just makes it easier to do whatever we need with it without needing to worry about getting confused between live sites and test sites. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue22650 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue22787] ssl.SSLContext.load_cert_chain() backport regression with None as keyfile
New submission from Till Maas: https://github.com/python/cpython/commit/71a4ee3ea2c6847b9fc4b33cbc8d565a7bf2424a introduces a regression in ssl.SSLContext.load_cert_chain() https://github.com/python/cpython/blob/2.7/Modules/_ssl.c#L2462 With this change it is not possible to specify None as keyfile which can be triggered on Debian Testing? (there the change is backported) in requests.get(https://example.com;, cerf=keycert.pem). It can also be triggered with the sample code in the attached file. It is fixed in recent python 3. -- components: Library (Lib) files: poc.txt messages: 230539 nosy: till priority: normal severity: normal status: open title: ssl.SSLContext.load_cert_chain() backport regression with None as keyfile type: behavior versions: Python 2.7 Added file: http://bugs.python.org/file37120/poc.txt ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue22787 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue22787] ssl.SSLContext.load_cert_chain() backport regression with None as keyfile
Till Maas added the comment: sorry, it should be: requests.get(https://example.com;, cert=keycert.pem) -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue22787 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue22787] ssl.SSLContext.load_cert_chain() backport regression with None as keyfile
Changes by Alex Gaynor alex.gay...@gmail.com: -- nosy: +alex, christian.heimes, dstufft, giampaolo.rodola, janssen, pitrou ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue22787 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue22417] PEP 476: verify HTTPS certificates by default
Benjamin Peterson added the comment: % ./python Lib/test/regrtest.py -v test_urllib2_localnet == CPython 3.4.2+ (3.4:7be6ef737aaf+, Nov 3 2014, 10:03:11) [GCC 4.8.3] == Linux-3.16.5-gentoo-x86_64-Intel-R-_Core-TM-_i7-2860QM_CPU_@_2.50GHz-with-gentoo-2.2 little-endian == hash algorithm: siphash24 64bit == /home/benjamin/dev/python/3.4/build/test_python_28724 Testing with flags: sys.flags(debug=0, inspect=0, interactive=0, optimize=0, dont_write_bytecode=0, no_user_site=0, no_site=0, ignore_environment=0, verbose=0, bytes_warning=0, quiet=0, hash_randomization=1, isolated=0) [1/1] test_urllib2_localnet test_basic_auth_httperror (test.test_urllib2_localnet.BasicAuthTests) ... ok test_basic_auth_success (test.test_urllib2_localnet.BasicAuthTests) ... ok test_proxy_qop_auth_int_works_or_throws_urlerror (test.test_urllib2_localnet.ProxyAuthTests) ... ok test_proxy_qop_auth_works (test.test_urllib2_localnet.ProxyAuthTests) ... ok test_proxy_with_bad_password_raises_httperror (test.test_urllib2_localnet.ProxyAuthTests) ... ok test_proxy_with_no_password_raises_httperror (test.test_urllib2_localnet.ProxyAuthTests) ... ok test_200 (test.test_urllib2_localnet.TestUrlopen) ... ok test_200_with_parameters (test.test_urllib2_localnet.TestUrlopen) ... ok test_404 (test.test_urllib2_localnet.TestUrlopen) ... ok test_bad_address (test.test_urllib2_localnet.TestUrlopen) ... skipped Use of the 'network' resource not enabled test_basic (test.test_urllib2_localnet.TestUrlopen) ... ok test_chunked (test.test_urllib2_localnet.TestUrlopen) ... ok test_geturl (test.test_urllib2_localnet.TestUrlopen) ... ok test_https (test.test_urllib2_localnet.TestUrlopen) ... Got an error: [SSL: TLSV1_ALERT_UNKNOWN_CA] tlsv1 alert unknown ca (_ssl.c:600) stopping HTTPS server joining HTTPS thread ERROR test_https_sni (test.test_urllib2_localnet.TestUrlopen) ... Got an error: [SSL: TLSV1_ALERT_UNKNOWN_CA] tlsv1 alert unknown ca (_ssl.c:600) stopping HTTPS server joining HTTPS thread ERROR test_https_with_cadefault (test.test_urllib2_localnet.TestUrlopen) ... stopping HTTPS server Got an error: [SSL: TLSV1_ALERT_UNKNOWN_CA] tlsv1 alert unknown ca (_ssl.c:600) joining HTTPS thread ok test_https_with_cafile (test.test_urllib2_localnet.TestUrlopen) ... Got an error: [SSL: TLSV1_ALERT_UNKNOWN_CA] tlsv1 alert unknown ca (_ssl.c:600) stopping HTTPS server joining HTTPS thread stopping HTTPS server joining HTTPS thread ok test_info (test.test_urllib2_localnet.TestUrlopen) ... ok test_iteration (test.test_urllib2_localnet.TestUrlopen) ... ok test_line_iteration (test.test_urllib2_localnet.TestUrlopen) ... ok test_redirection (test.test_urllib2_localnet.TestUrlopen) ... ok test_sending_headers (test.test_urllib2_localnet.TestUrlopen) ... ok == ERROR: test_https (test.test_urllib2_localnet.TestUrlopen) -- Traceback (most recent call last): File /home/benjamin/dev/python/3.4/Lib/urllib/request.py, line 1182, in do_open h.request(req.get_method(), req.selector, req.data, headers) File /home/benjamin/dev/python/3.4/Lib/http/client.py, line 1090, in request self._send_request(method, url, body, headers) File /home/benjamin/dev/python/3.4/Lib/http/client.py, line 1128, in _send_request self.endheaders(body) File /home/benjamin/dev/python/3.4/Lib/http/client.py, line 1086, in endheaders self._send_output(message_body) File /home/benjamin/dev/python/3.4/Lib/http/client.py, line 924, in _send_output self.send(msg) File /home/benjamin/dev/python/3.4/Lib/http/client.py, line 859, in send self.connect() File /home/benjamin/dev/python/3.4/Lib/http/client.py, line 1230, in connect server_hostname=sni_hostname) File /home/benjamin/dev/python/3.4/Lib/ssl.py, line 364, in wrap_socket _context=self) File /home/benjamin/dev/python/3.4/Lib/ssl.py, line 584, in __init__ self.do_handshake() File /home/benjamin/dev/python/3.4/Lib/ssl.py, line 811, in do_handshake self._sslobj.do_handshake() ssl.SSLError: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:600) During handling of the above exception, another exception occurred: Traceback (most recent call last): File /home/benjamin/dev/python/3.4/Lib/test/test_urllib2_localnet.py, line 548, in test_https data = self.urlopen(https://localhost:%s/bizarre; % handler.port) File /home/benjamin/dev/python/3.4/Lib/test/test_urllib2_localnet.py, line 455, in urlopen f = urllib.request.urlopen(url, data, **kwargs) File /home/benjamin/dev/python/3.4/Lib/urllib/request.py, line 161, in urlopen return opener.open(url, data, timeout) File /home/benjamin/dev/python/3.4/Lib/urllib/request.py, line 463, in open response = self._open(req, data) File /home/benjamin/dev/python/3.4/Lib/urllib/request.py, line 481, in _open '_open', req) File
[issue22787] ssl.SSLContext.load_cert_chain() backport regression with None as keyfile
Changes by Alex Gaynor alex.gay...@gmail.com: -- keywords: +patch Added file: http://bugs.python.org/file37121/issue22787.diff ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue22787 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue22417] PEP 476: verify HTTPS certificates by default
Alex Gaynor added the comment: Latest patch fixes the urllib2_localnet tests. -- Added file: http://bugs.python.org/file37122/issue22417.diff ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue22417 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue22787] ssl.SSLContext.load_cert_chain() backport regression with None as keyfile
Changes by Alex Gaynor alex.gay...@gmail.com: -- keywords: +needs review ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue22787 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue22784] test_asyncio fails without the ssl module
Guido van Rossum added the comment: OK, them LGTM. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue22784 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue22766] collections.Counter's in-place operators should return NotImplemented for unsupported types
Jim Jewett added the comment: If I know that a Counter (or any class X) can be updated in place, I will be surprised to find out that I'm using a different instance after a successful in-place operation. I would even consider that (replacement of the original instance) a security risk, though it is mitigated by the fact that I don't see how to exploit it without already being able to create arbitrary subclasses. For subclassing to work, the fix is: if not hasattr(other, 'items') or type(self) is not Counter: return NotImplemented That breaks for Counter subclasses on the left hand side -- even a trivial subclass to change the repr would fail unless the _i* methods were all re-implemented, either by the otherwise-trivial Counter subclass or by the right-hand objects. If you start making it work for the obvious cases, you just make the failure conditions more obscure. -- nosy: +Jim.Jewett ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue22766 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue22676] _pickle's whichmodule() is slow
Steve Dower added the comment: The fix for this now uses module without initializing it, which could lead to a crash if get_dotted_path() tries to raise an exception (it puts module into the error string with %R). See Modules/_pickle.c#l1656 and Modules/_pickle.c#l1538. I think the fix is to initialize module with Py_None and currently there's no need to bump the refcount (though I'm always wary of doing that in case things change in the future). If that sounds right I'm happy to put the fix in, else Antoine can do it :) -- nosy: +steve.dower ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue22676 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue22676] _pickle's whichmodule() is slow
Steve Dower added the comment: (Looks like I was outsmarted by the tracker when trying to put line numbers in my links... is there a way to do that?) -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue22676 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue22766] collections.Counter's in-place operators should return NotImplemented for unsupported types
Ethan Furman added the comment: Ethan stated: The only problem with the design is that it does not play well with others. For duck-typeable just do a check on 'other' to see if it has an .items() method, and return NotImplemented if it does not. Oh, and check that 'self' is Counter, and also return NotImplemented if that fails. R. David Murray replied: No, that doesn't support duck typing. Duck typing is not putting arbitrary restrictions on what objects you accept, but only essential restrictions. __iadd__ will raise an AttributeError if 'other' doesn't have an 'items' method -- how is that an arbitrary restriction? If 'other' doesn't have an 'items' but does know how to add itself to Counter, it won't matter because Counter is raising an exception instead of returning NotImplemented. What other types return NotImplemented when 'other' is not the expected (sub)type? bytes, bytearray, int, float, string, dict, list, tuple, Enum, deque, defaultdict, OrderedDict, Decimal, Fraction, and Counter itself for every binary method /except/ the four inplace ops it supplies itself. And as noted above, if you return NotImplemented, then you get an error message that essentially says this is impossible instead of this is what didn't work. Correct implementation should not be sacrificed for a nicer error message. Here's proof of subclass trouble -- the idea is to make an immutable Counter: [snip example] Your subclass doesn't override __iadd__ or any of the other mutation methods. Why would you expect it to be immutable if it doesn't? You're right, that was a bad example. A subclass would need to override any method whose behavior it wants to change. What does not seem correct to me is raising an exception because the type of 'other' is not correct, instead of returning NotImplemented, and in 14 other core datatypes it does work that way, and even in Counter it works that way for any in-place method that Counter itself doesn't override, and it does work that way /in/ Counter for the normal binary ops that it /does/ override. For subclassing to work, the fix is: if not hasattr(other, 'items') or type(self) is not Counter: return NotImplemented I've never seen a type check like that in a Python class, and I hope I never do. *That* breaks subclassing. Explanations and examples go a lot further than bare statements. [Jim Jewitt posts an explanation.] Ah, I see. Thank you, Jim. Okay, I agree that the check against the base class is ill-advised (and I modified some of the above reply to match that understanding). However, I am still unconvinced that 'other' should not be checked. Hopefully the python-dev thread will shed more light on this. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue22766 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue22417] PEP 476: verify HTTPS certificates by default
Alex Gaynor added the comment: Fix for the failing test_ssl testes. -- Added file: http://bugs.python.org/file37123/issue22417.diff ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue22417 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue22788] allow HTTPHandler to take an SSLContext
New submission from Benjamin Peterson: It would be nice if HTTPHandler could take an SSLContext as a parameter, which would be passed to HTTPSConnection to configure the security of the connection. -- components: Library (Lib) messages: 230549 nosy: benjamin.peterson, vinay.sajip priority: normal severity: normal stage: needs patch status: open title: allow HTTPHandler to take an SSLContext type: enhancement versions: Python 3.5 ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue22788 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue1539381] Add readinto method to StringIO and cStringIO
Silvio Ricardo Cordeiro added the comment: BufferedReader assumes that readinto is defined, but that's not the case for StringIO's. In the end, this cripples StringIO objects, because their data can never be peek()'ed as with all other file objects. -- components: +IO -Library (Lib) nosy: +silvioricardoc type: - behavior versions: +Python 2.7, Python 3.2 -Python 2.6 ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue1539381 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue22788] allow HTTPHandler to take an SSLContext
Alex Gaynor added the comment: I'm not sure I follow, where does HTTPHandler ever construct an HTTPSConnection? -- nosy: +alex ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue22788 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue22788] allow HTTPHandler to take an SSLContext
Benjamin Peterson added the comment: emit() On Mon, Nov 3, 2014, at 15:33, Alex Gaynor wrote: Alex Gaynor added the comment: I'm not sure I follow, where does HTTPHandler ever construct an HTTPSConnection? -- nosy: +alex ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue22788 ___ -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue22788 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue22788] allow HTTPHandler to take an SSLContext
Alex Gaynor added the comment: Hah! I didn't realize you meant *logging.handlers.HTTPHandler*, I thought you meant *urllib.request.HTTPHandler*. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue22788 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue22788] allow logging.handlers.HTTPHandler to take an SSLContext
Benjamin Peterson added the comment: Right then... -- title: allow HTTPHandler to take an SSLContext - allow logging.handlers.HTTPHandler to take an SSLContext ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue22788 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue22417] PEP 476: verify HTTPS certificates by default
Roundup Robot added the comment: New changeset 2afe5413d7af by Benjamin Peterson in branch '3.4': PEP 476: enable HTTPS certificate verification by default (#22417) https://hg.python.org/cpython/rev/2afe5413d7af New changeset 731375f83406 by Benjamin Peterson in branch 'default': merge 3.4 (#22417) https://hg.python.org/cpython/rev/731375f83406 -- nosy: +python-dev ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue22417 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue22417] PEP 476: verify HTTPS certificates by default
Benjamin Peterson added the comment: Okay, 3.4/3.5 have been dealt with. I had to hack up test_logging a bit. (#22788 would make that better). 2.7 now needs a backport. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue22417 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue7559] TestLoader.loadTestsFromName swallows import errors
Domen Kožar added the comment: Could we backport this one to 3.x and 2.7? It's leads to really bad UX. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue7559 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue22788] allow logging.handlers.HTTPHandler to take an SSLContext
Alex Gaynor added the comment: Quick pass at a patch. No docs, and it should proabbly be an error to pass context with secure=False. -- keywords: +needs review, patch Added file: http://bugs.python.org/file37124/issue22788.diff ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue22788 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue22766] collections.Counter's in-place operators should return NotImplemented for unsupported types
Ethan Furman added the comment: Okay, the python-dev ruling is in, and raising an exception in the __ixxx__ methods is allowed, and even a good idea in the cases of mutable containers. However, doing the check on 'other' and raising a TypeError with an appropriate message would still be better for a couple reasons: - all the non-inplace operations raise TypeError when 'other' is not a correct type - __iand__ is currently buggy because it does not do the check If backwards compatibility is a concern in this case, a custom TypeError that was a subclass of both TypeError and AttributeError could address that. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue22766 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue22735] Fix various crashes exposed through mro() customization
Benjamin Peterson added the comment: Thank you for the patchset. I wonder if we should just forbid most reentrancy i.e. set a flag on the type when it's being constructed and not let type_set_bases be called then. Setting __bases__ from within mro() doesn't seem very useful outside of producing pathologies. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue22735 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue22780] NotImplemented doc section needs update
Ethan Furman added the comment: + Special value which should be returned by the special methods + (:meth:`__eq__`, :meth:`__lt__`, :meth:`__add__`, etc.) to indicate + that the operation is not implemented with respect to the other type. After a discussion on python-dev, I think this wording could be even clearer. How about: Special value which should be returned by the binary special methods (e.g. :meth:`__eq__`, :meth:`__lt__`, :meth:`__add__`, :meth:`__rsub__`, etc.) to indicate that the operation is not implemented with respect to the other type; may be returned by the in-place binary special methods (e.g. :meth:`__imul__`, :meth:`__iand__`, etc.) for the same purpose. -- status: closed - open ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue22780 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue22366] urllib.request.urlopen should take a context (SSLContext) argument
Arfrever Frehtes Taifersar Arahesis added the comment: Please update versionchanged to 3.4.3 on default branch. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue22366 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue21650] add json.tool option to avoid alphabetic sort of fields
Serhiy Storchaka added the comment: LGTM. -- stage: patch review - commit review ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue21650 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue22780] NotImplemented doc section needs update
R. David Murray added the comment: Sounds OK to me. There should already be a discussion of the consequences of returning it (I don't remember where, though), and it would be nice to link to that discussion. Note that any doc change should be applied to 3.4 first, and then merged to 3.5. -- versions: +Python 3.4 ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue22780 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue7559] TestLoader.loadTestsFromName swallows import errors
R. David Murray added the comment: I would love that, but I think the fix depends on a feature. Robert will know for sure. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue7559 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue22780] NotImplemented doc section needs update
Ethan Furman added the comment: I found these items: Doc/c-api/object.rst .. c:var:: PyObject* Py_NotImplemented The ``NotImplemented`` singleton, used to signal that an operation is not implemented for the given type combination. Doc/extending/newtypes.rst --- where the operator is one of ``Py_EQ``, ``Py_NE``, ``Py_LE``, ``Py_GT``, ``Py_LT`` or ``Py_GT``. It should compare the two objects with respect to the specified operator and return ``Py_True`` or ``Py_False`` if the comparison is successful, ``Py_NotImplemented`` to indicate that comparison is not implemented and the other object's comparison method should be tried, or *NULL* if an exception was set. Doc/Library/numbers.rst --- Implementing the arithmetic operations ~~ We want to implement the arithmetic operations so that mixed-mode operations either call an implementation whose author knew about the types of both arguments, or convert both to the nearest built in type and do the operation there. For subtypes of :class:`Integral`, this means that :meth:`__add__` and :meth:`__radd__` should be defined as:: class MyIntegral(Integral): def __add__(self, other): if isinstance(other, MyIntegral): return do_my_adding_stuff(self, other) elif isinstance(other, OtherTypeIKnowAbout): return do_my_other_adding_stuff(self, other) else: return NotImplemented def __radd__(self, other): if isinstance(other, MyIntegral): return do_my_adding_stuff(other, self) elif isinstance(other, OtherTypeIKnowAbout): return do_my_other_adding_stuff(other, self) elif isinstance(other, Integral): return int(other) + int(self) elif isinstance(other, Real): return float(other) + float(self) elif isinstance(other, Complex): return complex(other) + complex(self) else: return NotImplemented There are 5 different cases for a mixed-type operation on subclasses of :class:`Complex`. I'll refer to all of the above code that doesn't refer to ``MyIntegral`` and ``OtherTypeIKnowAbout`` as boilerplate. ``a`` will be an instance of ``A``, which is a subtype of :class:`Complex` (``a : A : Complex``), and ``b : B : Complex``. I'll consider ``a + b``: 1. If ``A`` defines an :meth:`__add__` which accepts ``b``, all is well. 2. If ``A`` falls back to the boilerplate code, and it were to return a value from :meth:`__add__`, we'd miss the possibility that ``B`` defines a more intelligent :meth:`__radd__`, so the boilerplate should return :const:`NotImplemented` from :meth:`__add__`. (Or ``A`` may not implement :meth:`__add__` at all.) 3. Then ``B``'s :meth:`__radd__` gets a chance. If it accepts ``a``, all is well. 4. If it falls back to the boilerplate, there are no more possible methods to try, so this is where the default implementation should live. 5. If ``B : A``, Python tries ``B.__radd__`` before ``A.__add__``. This is ok, because it was implemented with knowledge of ``A``, so it can handle those instances before delegating to :class:`Complex`. Doc/library/datetime.rst In other words, ``date1 date2`` if and only if ``date1.toordinal() date2.toordinal()``. In order to stop comparison from falling back to the default scheme of comparing object addresses, date comparison normally raises :exc:`TypeError` if the other comparand isn't also a :class:`date` object. However, ``NotImplemented`` is returned instead if the other comparand has a :meth:`timetuple` attribute. This hook gives other kinds of date objects a chance at implementing mixed-type comparison. If not, when a :class:`date` object is compared to an object of a different type, :exc:`TypeError` is raised unless the comparison is ``==`` or ``!=``. The latter cases return :const:`False` or :const:`True`, respectively. Doc/reference/expressions.rst - Comparisions ... Comparison of objects of differing types depends on whether either of the types provide explicit support for the comparison. Most numeric types can be compared with one another. When cross-type comparison is not supported, the comparison method returns ``NotImplemented``. Ahha! I think I found it (nearly at the end, of course): Doc/reference/datamodel.rst --- The standard type hierarchy === ... NotImplemented .. index:: object: NotImplemented This type has a single value. There is a single object with this value. This object is accessed through the built-in name ``NotImplemented``. Numeric methods and rich comparison
[issue22780] NotImplemented doc section needs update
R. David Murray added the comment: I was actually thinking of the Implementing the arithmetic operations section. Maybe we should copy the parenthetical from the datamodel description into the text you are modifying, and then link to the implementing section. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue22780 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue22417] PEP 476: verify HTTPS certificates by default
Benjamin Peterson added the comment: Somehow the Windows bots are failing to verify python.org http://buildbot.python.org/all/builders/x86%20XP-4%203.x/builds/11179/steps/test/logs/stdio -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue22417 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue22788] allow logging.handlers.HTTPHandler to take an SSLContext
Changes by Arfrever Frehtes Taifersar Arahesis arfrever@gmail.com: -- nosy: +Arfrever ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue22788 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue22650] set up and use VM for net access in the test suite
Antoine Pitrou added the comment: Not to mention possible cookie tests, I suppose. (I would personally have preferred something like comfychair.net, but I guess pythontest.net is ok too :-)) -- nosy: +pitrou ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue22650 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue826897] Proto 2 pickle vs dict subclass
Tim Graham added the comment: Cookie pickling issue should be fixed in #22775. -- nosy: +Tim.Graham ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue826897 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue22787] ssl.SSLContext.load_cert_chain() backport regression with None as keyfile
Roundup Robot added the comment: New changeset e54d0b197c82 by Benjamin Peterson in branch '2.7': allow keyfile argument to be None (closes #22787) https://hg.python.org/cpython/rev/e54d0b197c82 -- nosy: +python-dev resolution: - fixed stage: - resolved status: open - closed ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue22787 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue22758] Regression in Python 3.2 cookie parsing
Tim Graham added the comment: Georg, how do want to proceed with this issue? Should we backport #16611 (support for parsing secure/httponly flag) to 3.2 to fix this regression and then create a separate issue to fix the lax parsing issue on all versions? -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue22758 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue20160] broken ctypes calling convention on MSVC / 64-bit Windows (large structs)
Steve Dower added the comment: Patch looks good to me, but given this issue, #11835, #22733, and probably more, should we be integrating from libffi (which apparently has fixes for some of these) more often? I know nothing about how we move code between that and ctypes. -- nosy: +steve.dower ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue20160 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17896] Move Windows external libs from src\..\ to src\externals
Zachary Ware added the comment: Good point, David. Jeremy, Trent, you're the only other Windows buildbot operators as far as I know; feel free to clean up the old externals locations as you like. Also, sorry to make it a bit hairier to operate, but I think this is a big enough improvement for day-to-day development that I definitely don't want to change back. For the record, it is fairly easy to just move out the externals folder, do whatever you need to with the repository, and move it back in without having to rebuild OpenSSL or Tcl/Tk/Tix. -- nosy: +jeremy.kloth ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17896 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue22725] improve documentation for enumerate() (built-in function)
Tshepang Lekhonkhobe added the comment: @raymond Why do you say that 'sequence' is a keyword? enumerate() Traceback (most recent call last): File stdin, line 1, in module TypeError: Required argument 'sequence' (pos 1) not found That means that 'sequence' can be changed to 'iterable' without worrying about backwards compatibility. -- nosy: +tshepang ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue22725 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue22789] Compress the marshalled data in PYC files
New submission from Raymond Hettinger: Save space and reduce I/O time (reading and writing) by compressing the marshaled code in files. In my code tree for Python 3, there was a nice space savings 19M to 7M. Here's some of the output from my test: 8792 - 4629 ./Tools/scripts/__pycache__/reindent.cpython-35.pyc 1660 - 1063 ./Tools/scripts/__pycache__/rgrep.cpython-35.pyc 1995 - 1129 ./Tools/scripts/__pycache__/run_tests.cpython-35.pyc 1439 - 973 ./Tools/scripts/__pycache__/serve.cpython-35.pyc 727 - 498 ./Tools/scripts/__pycache__/suff.cpython-35.pyc 3240 - 1808 ./Tools/scripts/__pycache__/svneol.cpython-35.pyc 74866 -23611 ./Tools/scripts/__pycache__/texi2html.cpython-35.pyc 5562 - 2870 ./Tools/scripts/__pycache__/treesync.cpython-35.pyc 1492 - 970 ./Tools/scripts/__pycache__/untabify.cpython-35.pyc 1414 - 891 ./Tools/scripts/__pycache__/which.cpython-35.pyc 19627963 - 6976410 Total I haven't measured it yet, but I believe this will improve Python's start-up time (because fewer bytes get transferred from disk). -- files: compress_pyc.py messages: 230576 nosy: rhettinger priority: normal severity: normal stage: needs patch status: open title: Compress the marshalled data in PYC files type: enhancement versions: Python 3.5 Added file: http://bugs.python.org/file37125/compress_pyc.py ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue22789 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue22719] os.path.isfile os.path.exists bug in while loop
Zachary Ware added the comment: Aaron, what version of Python are you using on what version of Windows? Also, 32 or 64 bit on both? I can't reproduce this with any Python 3.3.6 or newer on 64-bit Windows 8.1. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue22719 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue22725] improve documentation for enumerate() (built-in function)
Raymond Hettinger added the comment:
static PyObject *
Why do you say that 'sequence' is a keyword?
It is a keyword argument to enumerate(). Here's the relevant section of code:
enum_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
{
enumobject *en;
PyObject *seq = NULL;
PyObject *start = NULL;
static char *kwlist[] = {sequence, start, 0};
if (!PyArg_ParseTupleAndKeywords(args, kwds, O|O:enumerate, kwlist,
seq, start))
return NULL
--
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[issue22780] NotImplemented doc section needs update
Raymond Hettinger added the comment: FWIW, I think doc changes like this need to be made by the people most familiar with the implementation details and with the original design intent (i.e. the authors of PEP 207). The knowledge here is fragile and it would be easy to accidentally make-up new normative rules that aren't actually true or necessary, or to subtly misrepresent what was trying to be accomplished originally. The risk is greatest when the OP is just now learning the ins and outs of NotImplemented (i.e. whether in-place operations can or should return NotImplemeted or whether those operations can be duck typed). Changing can be returned to should be returned is normative (making-up a new rule without sufficient discussion). This doesn't add explanation; instead, instead, it make a rule change about how a feature should be used. https://hg.python.org/cpython/rev/26d0a17affb5 -- nosy: +gvanrossum, rhettinger, tim.peters ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue22780 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue22780] NotImplemented doc section needs update
Changes by Raymond Hettinger raymond.hettin...@gmail.com: -- Removed message: http://bugs.python.org/msg230579 ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue22780 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue22789] Compress the marshalled data in PYC files
Raymond Hettinger added the comment: Looking into this further, I suspect that the cleanest way to implement this would be to add a marshal version 4 that compresses and decompresses using zlib. -- components: +Interpreter Core nosy: +brett.cannon, pitrou ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue22789 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue22789] Compress the marshalled data in PYC files
Raymond Hettinger added the comment: Looking into this further, I suspect that the cleanest way to implement this would be to add a zlib compression and decompression using to the marshal.c (bumping the version number to 5). -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue22789 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue22789] Compress the marshalled data in PYC files
Changes by Raymond Hettinger raymond.hettin...@gmail.com: -- Removed message: http://bugs.python.org/msg230580 ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue22789 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue22780] NotImplemented doc section needs update
Ethan Furman added the comment: Thank you, Raymond, both for your concern and your discretion. My interest in changing the can or may to should is that, whatever the original intent of the PEP, the way Python works /now/ is that any class that doesn't return NotImplemented when it /should/ is not going to interoperate well with other compatible classes. At the heart of the issue is what happens when def bin_op(self, other): ... is called, but the left-hand operand doesn't know how to work with the right-hand operand? We have three choices: - do nothing, letting any exceptions boil up or errors propagate - do a check on 'other' to determine if it's usable, and raise an exception if it is not - do a check on 'other' to determine if it's usable, and return NotImplemented if it is not Only the last choice allows 'other' to also try the operation. Except for the special-case of in-place bin-ops, why would we not want choice three? -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue22780 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue21931] Nonsense errors reported by msilib.FCICreate for bad argument
Martin v. Löwis added the comment: I haven't had any time to work on Python in the last year, so it may take some more time for me to look into this. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue21931 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue22780] NotImplemented doc section needs update
Ethan Furman added the comment: How about: Special value which should be returned by the binary special methods (e.g. :meth:`__eq__`, :meth:`__lt__`, :meth:`__add__`, :meth:`__rsub__`, etc.) to indicate that the operation is not implemented with respect to the other type; may be returned by the in-place binary special methods (e.g. :meth:`__imul__`, :meth:`__iand__`, etc.) for the same purpose. Its truth value is true. Note:: When NotImplemented is returned, the interpreter will then try the reflected operation on the other type, or some other fallback, depending on the operator. If all attempted operations return NotImplemented, the interpreter will raise an appropriate exception. I have no idea how to create a link to the 'Implementing the arithmetic operations' section. Any clues? -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue22780 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue22780] NotImplemented doc section needs update
Georg Brandl added the comment: You add a label before that section and then reference it with :ref:. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue22780 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue22775] SimpleCookie not unpicklable with protocol 2+
Georg Brandl added the comment: Thanks! -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue22775 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue22758] Regression in Python 3.2 cookie parsing
Georg Brandl added the comment: That seems like the best course of action. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue22758 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue22695] open() declared deprecated in python 3 docs
Georg Brandl added the comment: LGTM. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue22695 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
