Mailman 3 October 2019 - docs

A suggestion for improving the documentation of chapter 10.9. Data Compression
by Guy Goldner May 22, 2024

May 22, 2024

Hello dear Python gods :) I'm new at Python and was going over the documentation . This useful paragraph : https://docs.python.org/3.7/tutorial/stdlib.html#data-compression provides info for compressing text but IMHO some important additional info is needed, without which I expect nearly all users would get stuck just as I have. Moreover, while looking for a solution I noticed a lot of articles with outdated examples which no longer work - this confused me even more to the point I started suspecting something was amiss on my end... Anyhow, adding this info would do the trick : zlib works only with bytes and in Python 3.x strings are no longer bytes. Example : *>>> zlib.compress('this is a sample string which does not work in zlib because it requires bytes and not unicode')Traceback (most recent call last): File "<stdin>", line 1, in <module>TypeError: a bytes-like object is required, not 'str'>>>* Luckily Python has a very simple solution for this : encode to utf-8, compress, decode back to unicode like so : *>>> text = 'this is a sample string which does not work in zlib because it requires bytes and not unicode with chars like this »שלום '>>> encoded = text.encode()>>> text = 'this is a sample with unicode chars »שלום '>>> encoded = text.encode()>>> compressed = zlib.compress(encoded)>>> decompressed = zlib.decompress(compressed)>>> decoded = decompressed.decode()>>> len(text),len(encoded),len(compressed) #notice that compression of short strings can be larger than the original(42, 47, 54)>>> print(text,'\n',encoded,'\n',compressed)this is a sample with unicode chars »שלום b'this is a sample with unicode chars \xc2\xbb\xd7\xa9\xd7\x9c\xd7\x95\xd7\x9d ' b'x\x9c+\xc9\xc8,V\x00\xa2D\x85\xe2\xc4\xdc\x82\x9cT\x85\xf2\xcc\x92\x0c\x85\xd2\xbc\xcc\xe4\xfc\x94T\x85\xe4\x8c\xc4\xa2b\x85C\xbb\xaf\xaf\xbc>\xe7\xfa\xd4\xebs\x15\x00\xb2K\x14|'>>> text == decodedTrue* Thank you ! You are doing a great thing ! B.R., Guy Goldner

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[issue38352] In typing docs, note explicit import needed for IO and Pattern/Match
by Karl Kornel May 4, 2021

May 4, 2021

New submission from Karl Kornel <karl(a)kornel.us>: Hello! In https://github.com/python/cpython/blob/master/Lib/typing.py#L115-L117, there is a note about the io and re classes not being included in typing.__all__. I am a relatively new user of typing, and I did `from typing import *` in my code. I ran the code through mypy first, which reported no problems, but then running Python 3.6 failed with a NameError (name 'IO' is not defined). Reading through the typing source, it's clear that this was an intentional decision. So, instead of reporting a bug, I'd like to request a documentation enhancement! The docs for typing make no mention of typing.io or typing.re. So, my request is: In the sections for the IO/TextIO/BinaryIO and Pattern/Match classes, include text warning the user that these types are not imported when you do `from typing import *`. ---------- assignee: docs@python components: Documentation messages: 353763 nosy: Karl Kornel, docs@python priority: normal severity: normal status: open title: In typing docs, note explicit import needed for IO and Pattern/Match type: behavior versions: Python 3.6 _______________________________________ Python tracker <report(a)bugs.python.org> <https://bugs.python.org/issue38352> _______________________________________

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[issue38291] Unclear status of the typing.io and typing.re pseudo-modules in docs and runtime
by dgelessus May 3, 2021

May 3, 2021

New submission from dgelessus <dgelessus+bugs.python.org(a)me.com>: According to bpo-35089 (and the GitHub issues linked there), the typing.io and typing.re modules should no longer be used. Starting with Python 3.6, the typing documentation no longer mentions the typing.io and typing.re modules, and instead documents their contents as part of the main typing module. However, the typing module at runtime still supports typing.io and typing.re as before. Since these modules are not meant to be used anymore and are no longer documented, I would expect at least a DeprecationWarning when using them at runtime. The documentation on this could also be a bit clearer. As long as the modules are still supported at runtime, I would expect the documentation to mention that they still exist, but shouldn't be used anymore. In its current state, the documentation is confusing when coming from Python 3.5 (where typing.io and typing.re were the only documented way to access IO, Pattern, etc., but accessing typing.IO and typing.Pattern directly also works at runtime). ---------- assignee: docs@python components: Documentation, Library (Lib) messages: 353356 nosy: dgelessus, docs@python priority: normal severity: normal status: open title: Unclear status of the typing.io and typing.re pseudo-modules in docs and runtime type: behavior versions: Python 3.6, Python 3.7, Python 3.8, Python 3.9 _______________________________________ Python tracker <report(a)bugs.python.org> <https://bugs.python.org/issue38291> _______________________________________

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[issue32752] no information about accessing typing.Generic type arguments
by Paul Pinterits May 2, 2021

May 2, 2021

New submission from Paul Pinterits <rawing7(a)gmail.com>: The documentation of the typing module explains how to instantiate generic types, but there is no information about how to extract the type arguments from a generic type. Example: >>> list_of_ints = typing.List[int] >>> >>> # how do we get <class 'int'> out of list_of_ints? >>> list_of_ints.??? <class 'int'> Through trial and error I've discovered list_of_ints.__args__, which *seems* to be what I'm looking for, but since it's never mentioned in the docs, it's unclear whether this __args__ attribute is an implementation detail or not. Please document the official/intended way to extract type arguments from a Generic. ---------- assignee: docs@python components: Documentation messages: 311520 nosy: Paul Pinterits, docs@python priority: normal severity: normal status: open title: no information about accessing typing.Generic type arguments type: enhancement versions: Python 3.5, Python 3.6 _______________________________________ Python tracker <report(a)bugs.python.org> <https://bugs.python.org/issue32752> _______________________________________

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[issue22167] iglob() has misleading documentation (does indeed store names internally)
by Roy Smith May 1, 2021

May 1, 2021

New submission from Roy Smith: For background, see: https://mail.python.org/pipermail/python-list/2014-August/676291.html In a nutshell, the iglob() docs say, "Return an iterator which yields the same values as glob() without actually storing them all simultaneously." The problem is, internally, it calls os.listdir(), which apparently *does* store the entire list internally, defeating the whole purpose of iglob() I recognize that iglob() is not going to get fixed in 2.7, but at least the documentation should be updated to point out that it doesn't really do what it says it does. Or rather, it doesn't really not do what it says it doesn't :-) ---------- assignee: docs@python components: Documentation messages: 225048 nosy: docs@python, roysmith priority: normal severity: normal status: open title: iglob() has misleading documentation (does indeed store names internally) type: enhancement versions: Python 2.7 _______________________________________ Python tracker <report(a)bugs.python.org> <http://bugs.python.org/issue22167> _______________________________________

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[issue32824] Docs: Using Python on a Macintosh has bad info per Apple site
by Frank Griswold April 29, 2021

April 29, 2021

New submission from Frank Griswold <py.griswolf(a)spamgourmet.com>: This chunk of docs has bad info in both Python2 and Python3 docs: 4.1.3. Configuration Python on OS X honors all standard Unix environment variables such as PYTHONPATH, but setting these variables for programs started from the Finder is non-standard as the Finder does not read your .profile or .cshrc at startup. You need to create a file ~/.MacOSX/environment.plist. See Apple’s Technical Document QA1067 for details. If you search for QA1067, you are informed that the document is legacy and unsupported, with a suggestion for where to look now. That suggested link leads to a 404. Searching the apple site, I find that at least some thoughtful developers think that configuring the environment isn't even possible, generally; and isn't considered good form even if so. Here: https://forums.developer.apple.com/message/217422 I have no problem setting things for my terminal, as a longtime (unix) user, but for others, this section probably needs a complete examination with an eye toward making it current. quite possibly by reorganizing it. ---------- assignee: docs@python components: Documentation messages: 312023 nosy: docs@python, griswolf priority: normal severity: normal status: open title: Docs: Using Python on a Macintosh has bad info per Apple site type: enhancement _______________________________________ Python tracker <report(a)bugs.python.org> <https://bugs.python.org/issue32824> _______________________________________

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[issue23750] Clarify difference between os.system/subprocess.call in section "Replacing os.system()"
by Andreas Sommer April 28, 2021

April 28, 2021

New submission from Andreas Sommer: Reading over the section "Replacing os.system()" (https://docs.python.org/2/library/subprocess.html#replacing-os-system), one might assume that the return value of os.system and subprocess.call are equivalent. status = os.system("mycmd" + " myarg") # becomes status = subprocess.call("mycmd" + " myarg", shell=True) However, they are not. Example: import sys import os import subprocess print subprocess.call("false") print os.system("false") gives 1 and 256, respectively. Maybe this could be rephrased for clarity, or a hint added. ---------- assignee: docs@python components: Documentation messages: 239028 nosy: Andreas Sommer, docs@python priority: normal severity: normal status: open title: Clarify difference between os.system/subprocess.call in section "Replacing os.system()" type: enhancement _______________________________________ Python tracker <report(a)bugs.python.org> <http://bugs.python.org/issue23750> _______________________________________

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[issue24475] The docs never define what a pool "task" is
by Zahari Dim April 28, 2021

April 28, 2021

New submission from Zahari Dim: See: http://stackoverflow.com/questions/30943161/multiprocessing-pool-with-maxta… The documentation never makes clear what a "task" in the context of Pool.map. At best, it says: "This method chops the iterable into a number of chunks which it submits to the process pool as separate tasks. The (approximate) size of these chunks can be specified by setting chunksize to a positive integer." in the map documentation. However it does not say how this chunks are calculated by default, making the maxtasksperchild argument not very useful. The fact that a function evaluated by map is not a "task" should be much clearer in the documentation. Also, in the examples, such as: with multiprocessing.Pool(PROCESSES) as pool: # # Tests # TASKS = [(mul, (i, 7)) for i in range(10)] + \ [(plus, (i, 8)) for i in range(10)] results = [pool.apply_async(calculate, t) for t in TASKS] imap_it = pool.imap(calculatestar, TASKS) imap_unordered_it = pool.imap_unordered(calculatestar, TASKS) TASKS are not actually "tasks" but rather "task groups". ---------- assignee: docs@python components: Documentation messages: 245509 nosy: Zahari.Dim, docs@python priority: normal severity: normal status: open title: The docs never define what a pool "task" is versions: Python 2.7, Python 3.2, Python 3.3, Python 3.4, Python 3.5, Python 3.6 _______________________________________ Python tracker <report(a)bugs.python.org> <http://bugs.python.org/issue24475> _______________________________________

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[issue11975] Fix intersphinx-ing of built-in types (list, int, ...)
by Jonas H. April 28, 2021

April 28, 2021

New submission from Jonas H. <jonas(a)lophus.org>: Intersphinx-ing of int, list, float, ... should work with ":class:`int`" (list, float, ...). Also, intersphinx-ing list methods, e.g. ":meth:`list.insert`", should work. ---------- assignee: docs@python components: Documentation messages: 134923 nosy: docs@python, jonash priority: normal severity: normal status: open title: Fix intersphinx-ing of built-in types (list, int, ...) _______________________________________ Python tracker <report(a)bugs.python.org> <http://bugs.python.org/issue11975> _______________________________________

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[issue20692] Tutorial section 9.4
by Jon Shemitz April 28, 2021

April 28, 2021

New submission from Jon Shemitz: The tutorial says "Each value is an object, and therefore has a class (also called its type). It is stored as object.__class__." So, I tried >>> 3.__class__ File "<stdin>", line 1 3.__class__ ^ SyntaxError: invalid syntax Yet, "foo".__class__ worked, as did 3j.__class__ and 3.5.__class__. When my son (!) suggested that I try (3).__class__, I did indeed get <type 'int'>, while (3,).__class__ gave <type 'tuple'>. This *looks like* a minor error in the parser, where seeing \d+\. puts it in a state where it expects \d+ and it can't handle \w+ This may be the sort of thing that only a newbie would even think to try, so may not be worth fixing. If so, it may be worth mentioning in the tutorial. ---------- assignee: docs@python components: Documentation, Interpreter Core messages: 211670 nosy: Jon.Shemitz, docs@python priority: normal severity: normal status: open title: Tutorial section 9.4 type: behavior versions: Python 2.7 _______________________________________ Python tracker <report(a)bugs.python.org> <http://bugs.python.org/issue20692> _______________________________________

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[issue26629] Need an ability to build standard DLLs with distutils
by Buraddin Ibn-Karlo April 27, 2021

April 27, 2021

New submission from Buraddin Ibn-Karlo: I want to make a a dynamic library to run its function with ctypes. Also I want to build the library from sources with distutils (the C++ sources are distributed with my Python code). But alas! Our distutils fails, if the library doesn't have initialization function (something like init_<module_name>). Even if the module does not need any initialization. I did a quick and dirty solution: added a dummy function: void init_<module_name>(){} It somehow works, but I don't think that it is a good idea. Cannot you add the possibility to tell distutils, that this extention module is just a simple DLL, that will be used via ctypes (or somehow else) and it does not need any extra init script? Also, cannot you add an extra section to ctypes documentation? With a description how to build such extensions via distutils? ---------- assignee: docs@python components: Build, Documentation, Extension Modules, Windows, ctypes messages: 262308 nosy: Buraddin Ibn-Karlo, docs@python, paul.moore, steve.dower, tim.golden, zach.ware priority: normal severity: normal status: open title: Need an ability to build standard DLLs with distutils type: enhancement versions: Python 2.7 _______________________________________ Python tracker <report(a)bugs.python.org> <http://bugs.python.org/issue26629> _______________________________________

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[issue31055] All Sphinx generated pages could have a new "Edit This Page" link adjacent to the existing "Show Source"
by Paul Hammant April 25, 2021

April 25, 2021

New submission from Paul Hammant: Show Source links to: https://github.com/python/cpython/blob/path/to/resource.rst Edit This Page would link to https://github.com/python/cpython/edit/path/to/resource.rst And yes, GitHub does the right thing if you're not ordinarily permitted to change python/cpython ---------- assignee: docs@python components: Documentation messages: 299306 nosy: Paul Hammant, docs@python priority: normal severity: normal status: open title: All Sphinx generated pages could have a new "Edit This Page" link adjacent to the existing "Show Source" versions: Python 2.7 _______________________________________ Python tracker <report(a)bugs.python.org> <http://bugs.python.org/issue31055> _______________________________________

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[issue27420] Docs for os.link - say what happens if link already exists
by Niall Mansfield April 25, 2021

April 25, 2021

New submission from Niall Mansfield: In os.link(source, link_name) Change Create a hard link pointing to source named link_name. to Create a hard link pointing to source named link_name. If link_name already exists, OSError is raised. ---------- assignee: docs@python components: Documentation messages: 269572 nosy: docs@python, python-bugs-uit priority: normal severity: normal status: open title: Docs for os.link - say what happens if link already exists type: enhancement versions: Python 2.7 _______________________________________ Python tracker <report(a)bugs.python.org> <http://bugs.python.org/issue27420> _______________________________________

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[issue35676] class TestCase: docs are not correct
by אורי רודברג April 25, 2021

April 25, 2021

New submission from אורי רודברג <uri(a)speedy.net>: I think some functions of `class TestCase` are not documented correctly in the docs. For example in https://docs.python.org/3.5/library/unittest.html and also https://docs.python.org/3.6/library/unittest.html and https://docs.python.org/3.7/library/unittest.html. Some of the functions which are not documented correctly: assertListEqual assertSetEqual assertDictEqual assertIsNone And many other functions. You can see some more details on https://github.com/python/typeshed/issues/2716. ---------- assignee: docs@python components: Documentation messages: 333137 nosy: docs@python, אורי רודברג priority: normal severity: normal status: open title: class TestCase: docs are not correct versions: Python 3.5, Python 3.6, Python 3.7 _______________________________________ Python tracker <report(a)bugs.python.org> <https://bugs.python.org/issue35676> _______________________________________

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[issue16386] imp.find_module does not specify registry key it searches on windows
by Jan Duzinkiewicz April 24, 2021

April 24, 2021

New submission from Jan Duzinkiewicz: quote from http://docs.python.org/3/library/imp.html#imp.find_module: "...on some systems some other places are looked in as well (on Windows, it looks in the registry which may point to a specific file)." I actually didn't know the registry key is listed in "using Python on Window" guide until I grepped for PythonCore (which kind of requires to know the key already) - so I'm submitting a patch that cross references find_module docs and using Python on Windows guide. ---------- assignee: docs@python components: Documentation files: import_nt_reg.patch keywords: patch messages: 174508 nosy: dhgmgn, docs@python priority: normal severity: normal status: open title: imp.find_module does not specify registry key it searches on windows versions: Python 2.7, Python 3.3 Added file: http://bugs.python.org/file27843/import_nt_reg.patch _______________________________________ Python tracker <report(a)bugs.python.org> <http://bugs.python.org/issue16386> _______________________________________

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[issue35114] ssl.RAND_status docs describe it as returning True/False; actually returns 1/0
by Josh Rosenberg April 23, 2021

April 23, 2021

New submission from Josh Rosenberg <shadowranger+python(a)gmail.com>: The ssl.RAND_status online docs say (with code format on True/False): "Return True if the SSL pseudo-random number generator has been seeded with ‘enough’ randomness, and False otherwise." This is incorrect; the function actually returns 1 or 0 (and the docstring agrees). Fix can be one of: 1. Update docs to be less specific about the return type (use true/false, not True/False) 2. Update docs to match docstring (which specifically says 1/0, not True/False) 3. Update implementation and docstring to actually return True/False (replacing PyLong_FromLong with PyBool_FromLong and changing docstring to use True/False to match online docs) #3 involves a small amount of code churn, but it also means we're not needlessly replicating a C API's use of int return values when the function is logically bool (there is no error status for the C API AFAICT, so it's not like returning int gains us anything on flexibility). bool would be mathematically equivalent to the original 1/0 return value in the rare cases someone uses it mathematically. ---------- assignee: docs@python components: Documentation, SSL messages: 328917 nosy: docs@python, josh.r priority: low severity: normal status: open title: ssl.RAND_status docs describe it as returning True/False; actually returns 1/0 type: behavior _______________________________________ Python tracker <report(a)bugs.python.org> <https://bugs.python.org/issue35114> _______________________________________

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[issue11977] Document int.conjugate, .denominator, ...
by Jonas H. April 23, 2021

April 23, 2021

New submission from Jonas H. <jonas(a)lophus.org>: Various `int` attributes and methods seem undocumented (at least it does not work to intersphinx them): * .conjugate * .denominator * .imag * .numerator * .real ---------- assignee: docs@python components: Documentation messages: 134926 nosy: docs@python, jonash priority: normal severity: normal status: open title: Document int.conjugate, .denominator, ... versions: Python 2.7 _______________________________________ Python tracker <report(a)bugs.python.org> <http://bugs.python.org/issue11977> _______________________________________

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[issue32133] documentation: numbers module nitpick
by abcdef April 23, 2021

April 23, 2021

New submission from abcdef <x(a)mailinator.com>: Documentation of the numbers module: https://docs.python.org/3/library/numbers.html states "None of the types defined in this module can be instantiated." This is true for Complex, Real, Rational, Integral but not for Number: >>> numbers.Number() <numbers.Number object at 0x7fcccc71f3c0> >>> numbers.Real() Traceback (most recent call last): File "<stdin>", line 1, in <module> TypeError: Can't instantiate abstract class Real... Since Number doesn't have any abstract methods, the correct fix seems to be changing the documentation. I would try to convey something like this: "The types defined in this module can be used for subclassing and checking whether a specific class is in the numeric hierarchy; they are not used directly for instantiation. For this, you can use types such as `complex` or `fractions.Fraction`". ---------- assignee: docs@python components: Documentation messages: 306970 nosy: abcdef, docs@python priority: normal severity: normal status: open title: documentation: numbers module nitpick type: enhancement versions: Python 2.7, Python 3.6 _______________________________________ Python tracker <report(a)bugs.python.org> <https://bugs.python.org/issue32133> _______________________________________

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[issue21352] improve indexing
by bob gailer April 22, 2021

April 22, 2021

New submission from bob gailer: Inconsistencies / confusion with documentation Index Tab. Example (line numbers added for comments that follow): 1 max 2 built-in function 3 max (datetime.date attribute) 4 (datetime.datetime attribute) 5 (datetime.time attribute) 6 max() built-in function 7 (decimal.Context method) 8 (decimal.Decimal method) 9 (in module audioloop) The following all lead to confusion and frustration: Having 3 rows (1, 3, 6)that begin with max. Having an entry (1) that does nothing when double-clicked. double-clicking (2) takes us to a reference rather than a definition. RECOMMENDATION: change to: max() built-in function (sequence operation) (decimal.Context method) (decimal.Decimal method) max (datetime.date attribute) (datetime.datetime attribute) (datetime.time attribute) where double-clicking the first line goes to the max() definition in 2. Built-in Functions These comments apply, with a number of variations, to most built-in functions index entries. ---------- assignee: docs@python components: Documentation messages: 217170 nosy: bgailer, docs@python priority: normal severity: normal status: open title: improve indexing type: enhancement versions: Python 2.7, Python 3.1, Python 3.2, Python 3.3, Python 3.4, Python 3.5 _______________________________________ Python tracker <report(a)bugs.python.org> <http://bugs.python.org/issue21352> _______________________________________

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[issue19023] ctypes docs: Unimplemented and undocumented features
by Sye van der Veen April 20, 2021

April 20, 2021

New submission from Sye van der Veen: In the ctypes documentation, there's mention of a BigEndianUnion/LittleEndianUnion that isn't actually implemented, and the "Arrays and pointers" section just reads "Not yet written". The attached patch adds the (Big|Little)EndianUnion classes (with tests), finishes the Array/_Pointer class docs (and adds missing cases to the tests), and makes some stylistic improvements to docs. The patch was made against default, but it's quite likely it could be back-ported all the way to Python 3.1. ---------- assignee: docs@python components: Documentation, Tests, ctypes hgrepos: 209 messages: 197764 nosy: docs@python, syeberman priority: normal severity: normal status: open title: ctypes docs: Unimplemented and undocumented features type: enhancement _______________________________________ Python tracker <report(a)bugs.python.org> <http://bugs.python.org/issue19023> _______________________________________

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[issue36868] New behavior of OpenSSL hostname verification not exposed, incorrectly documented
by Josh Rosenberg April 17, 2021

April 17, 2021

New submission from Josh Rosenberg <shadowranger+python(a)gmail.com>: The What's New in 3.7 docs mention the change from #31399 to use OpenSSL's built-in hostname verification ( https://docs.python.org/3/whatsnew/3.7.html#ssl ), but aside from that, information about the change is largely undiscoverable and/or wrong. Specific problems: 1. The What's New docs repeatedly mention SSLContext.host_flags as the means of modifying behavior. The actual property is underscore prefixed though, as SSLContext._host_flags. Since SSLContext supports the creation of arbitrary names via __dict__, assigning to context.host_flags silently "works", it just fails to *do* anything (nothing ever reads it). 2. None of the flags are documented anywhere; the only way to discover them is to import _ssl (they're not exposed on ssl itself, just the internal C extension), then scan through the exposed names (they're all prefixed with HOSTFLAG_ AFAICT) 3. All of the flags are raw numeric values, but it seems like they should be IntEnums, like the other flags exposed by SSL (among other things, it would make it much easier to interpret the default _host_flags (currently it's just 4, when it could display as <HostFlags.HOSTFLAG_NO_PARTIAL_WILDCARDS: 4>) 4. Nothing about this change, _host_flags/host_flags, or the values of the flags themselves is mentioned on the ssl docs at all. 5. This unintentionally made a behavioral change (one that bit me, and may bite other folks using docker swarm, NETBIOS hostnames, etc.). Python's match_hostname implementation was fine with host names containing underscores (e.g. if the cert was wildcarded to *.example.com, it would match a_b_c.example.com just fine); they're not technically legal by the strict reading of the specs for host names (they're apparently legal for domain names, but not host names, which differ in ways I don't fully understand), but stuff like docker swarm names their services that way automatically, most (all?) browsers support visiting them, etc. It looks like OpenSSL (at least the 1.1.0g my Python 3.7.2 was built against) treats underscores as unmatchable, so any attempt to connect to such a host name in Python 3.7.2 dies with a SSLCertVerificationError, claiming a "Hostname mismatch, certificate is not valid for 'name_with_underscores.example.com'." I discovered all this because 3.7 broke some scripts I use to connect to docker swarm services. Before I realized the issue was underscores, I was trying to figure out how to tweak the host name checks (assuming maybe something was broken with wildcard matching), and stumbled across all the other issues with the docs, the lack of flag definition exposure, etc. For the record, I think it's reasonable to require legal host names (it was easy enough to fix for my case; I just updated our docker DNS server to provide aliases using only hyphens and changed the script to use the alias host names), but it would be nice if it was explicitly documented, and ideally, that Python itself recognize that underscores won't work and explicitly raise an exception saying why, rather than letting OpenSSL perform the rejection with a (to someone who doesn't know about the underscore issue) confusing error message. ---------- assignee: docs@python components: Documentation, Extension Modules, Library (Lib), SSL keywords: 3.6regression messages: 341990 nosy: christian.heimes, docs@python, josh.r, vstinner priority: normal severity: normal status: open title: New behavior of OpenSSL hostname verification not exposed, incorrectly documented type: behavior versions: Python 3.7, Python 3.8 _______________________________________ Python tracker <report(a)bugs.python.org> <https://bugs.python.org/issue36868> _______________________________________

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[issue34078] Broken CRL functionality in ssl.py
by Joe N April 17, 2021

April 17, 2021

New submission from Joe N <nettijoe(a)gmail.com>: CRLs in ssl.py or at the documentation is broken. Specifically I think the documentation here is wrong: https://docs.python.org/3/library/ssl.html#ssl.SSLContext.load_verify_locat… Here is a stackoverflow post: https://stackoverflow.com/questions/51196492/how-to-use-crls-in-pyopenssl?n… I made a very user friendly test suite of files to show how it is broken. Run the code in here (follow readme instructions) to see the bug. https://github.com/nettijoe96/bugInSSL ---------- assignee: christian.heimes components: SSL messages: 321343 nosy: Joe N, christian.heimes, docs@python priority: normal severity: normal status: open title: Broken CRL functionality in ssl.py type: behavior versions: Python 3.6 _______________________________________ Python tracker <report(a)bugs.python.org> <https://bugs.python.org/issue34078> _______________________________________

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[issue22128] patch: steer people away from codecs.open
by Frank van Dijk April 16, 2021

April 16, 2021

New submission from Frank van Dijk: stackoverflow.com has a zillion answers recommending the use of codecs.open() as a unicode capable drop in replacement for open(). This probably means that there is still a lot of code being written that uses codecs.open(). That's bad thing because of codecs.open()'s lack of newline conversion. A lot of that code will - have compatibility issues when it is moved between unix and windows - silently break text files on windows, leading to issues further downstream (confusing other tools, messing up revision control histories) The problem has been fixed with io.open() in 2.x and open() in 3.x. Unfortunately the 2.7 unicode HOWTO still recommends the use of codecs.open(). The 2.7 and the 3.x documentation of codecs.open() doesn't refer the reader to better alternatives. The attached patches fix that. The only downside I see is that newly written code that uses the better alternatives would be incompatible with 2.5 and older. However croaking on a small minority of systems is better than silently disrupting workflows, causing platform incompatibilities, and inviting flaky workarounds. The 2.7 patch makes the unicode HOWTO recommend io.open() instead of codecs.open(). Both patches change the codecs.open() documentation to refer to io.open() or (on 3.x) open(). Additionally I removed the "data loss" explanation from codecs.open()'s note about its lack of newline conversion. It is not particularly helpful information and it is not entirely correct (data loss could also have been avoided by doing newline conversion before encoding and after decoding) ---------- assignee: docs@python components: Documentation files: codecsopen2.patch keywords: patch messages: 224632 nosy: Frank.van.Dijk, docs@python priority: normal severity: normal status: open title: patch: steer people away from codecs.open type: behavior versions: Python 2.7, Python 3.4, Python 3.5 Added file: http://bugs.python.org/file36234/codecsopen2.patch _______________________________________ Python tracker <report(a)bugs.python.org> <http://bugs.python.org/issue22128> _______________________________________

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[issue37741] importlib.metadata docs not showing up in the module index
by Brett Cannon April 15, 2021

April 15, 2021

New submission from Brett Cannon <brett(a)python.org>: If you look at https://docs.python.org/3.9/py-modindex.html#cap-i you will see that importlib.metadata isn't listed (same goes for the 3.8 docs). Or are you leaving it out due to it being provisional? ---------- assignee: docs@python components: Documentation messages: 348872 nosy: barry, brett.cannon, docs@python, jaraco priority: normal severity: normal status: open title: importlib.metadata docs not showing up in the module index versions: Python 3.8, Python 3.9 _______________________________________ Python tracker <report(a)bugs.python.org> <https://bugs.python.org/issue37741> _______________________________________

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[issue28197] range.index mismatch with documentation
by Vedran Čačić April 14, 2021

April 14, 2021

New submission from Vedran Čačić: Look at this: >>> from collections.abc import Sequence >>> help(Sequence.index) index(self, value, start=0, stop=None) S.index(value, [start, [stop]]) -> integer -- return first index of value. Raises ValueError if the value is not present. >>> issubclass(range, Sequence) True >>> help(range.index) index(...) rangeobject.index(value, [start, [stop]]) -> integer -- return index of value. Raise ValueError if the value is not present. So far, so good. But: >>> range(9).index(2, 1, 5) TypeError: index() takes exactly one argument (3 given) Of course it's not essential, but the docs shouldn't lie. And if range _is_ a Sequence, then it should have the complete interface of a Sequence. Including start and end arguments for .index: they are optional from the point of call, not from the point of implementation. :-) ---------- assignee: docs@python components: Documentation, Library (Lib) messages: 276908 nosy: docs@python, veky priority: normal severity: normal status: open title: range.index mismatch with documentation type: behavior versions: Python 3.5, Python 3.6 _______________________________________ Python tracker <report(a)bugs.python.org> <http://bugs.python.org/issue28197> _______________________________________

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