Superclass static method name from subclass

Is it possible to access the name of a superclass static method, when defining a subclass attribute, without specifically naming the super- class? Contrived example: class SuperClass(object): @staticmethod def foo(): pass class SubClass(SuperClass): bar = SuperCl

Dealing with non-callable classmethod objects

I am trying to figure out a way to gracefully deal with uncallable classmethod objects. The class hierarchy below illustrates the issue. (Unfortunately, I haven't been able to come up with a shorter example.) import datetime class DUID(object): _subclasses = {} def __init_subclass__

Re: Superclass static method name from subclass

On 11/11/22 11:29, Dieter Maurer wrote: Ian Pilcher wrote at 2022-11-11 10:21 -0600: class SuperClass(object): @staticmethod def foo(): pass class SubClass(SuperClass): bar = SuperClass.foo ^^ Is there a way to do this without

Re: Superclass static method name from subclass

On 11/11/22 11:02, Thomas Passin wrote: You can define a classmethod in SubClass that seems to do the job: class SuperClass(object):   @staticmethod   def spam():  # "spam" and "eggs" are a Python tradition   print('spam from SuperClass') class SubClass(SuperClass):     @cla

Re: Dealing with non-callable classmethod objects

On 11/11/22 16:47, Cameron Simpson wrote: On 11Nov2022 15:29, Ian Pilcher wrote: * Can I improve the 'if callable(factory):' test above?  This treats  all non-callable objects as classmethods, which is obviously not  correct.  Ideally, I would check specifically for a classmethod,

Re: Dealing with non-callable classmethod objects

On 11/12/22 14:57, Cameron Simpson wrote: You shouldn't need a throwaway class, just use the name "classmethod" directly - it's the type!     if not callable(factory):     if type(factory) is classmethod:     # replace fctory with a function calling factory.__func__    

Calling pselect/ppoll/epoll_pwait

Does Python provide any way to call the "p" variants of the I/O multiplexing functions? Looking at the documentation of the select[1] and selectors[2] modules, it appears that they expose only the "non-p" variants. [1] https://docs.python.org/3/library/select.html [2] https://docs.python.org/3/l

Re: Calling pselect/ppoll/epoll_pwait

On 12/2/22 14:00, Ian Pilcher wrote: Does Python provide any way to call the "p" variants of the I/O multiplexing functions? Just to close this out ... As others suggested, there's no easy way to call the "p" variants of the I/O multiplexing functions, but thi

set.add() doesn't replace equal element

I just discovered this behavior, which is problematic for my particular use. Is there a different set API (or operator) that can be used to add an element to a set, and replace any equal element? If not, am I correct that I should call set.discard() before calling set.add() to achieve the behavi

Re: set.add() doesn't replace equal element

On 12/30/22 15:47, Paul Bryan wrote: What kind of elements are being added to the set? Can you show reproducible sample code? The objects in question are DHCP leases. I consider them "equal" if the lease address (or IPv6 prefix) is equal, even if the timestamps have changed. That code is not

Re: set.add() doesn't replace equal element

On 12/30/22 17:00, Paul Bryan wrote: It seems to me like you have to ideas of what "equal" means. You want to update a "non-equal/equal" value in the set (because of a different time stamp). If you truly considered them equal, the time stamp would be irrelevant and updating the value in the set

Tool that can document private inner class?

I've been banging my head on Sphinx for a couple of days now, trying to get it to include the docstrings of a private (name starts with two underscores) inner class. All I've managed to do is convince myself that it really can't do it. See https://github.com/sphinx-doc/sphinx/issues/11181. Is t

Re: Tool that can document private inner class?

On 2/7/23 14:53, Weatherby,Gerard wrote: Yes. Inspect module import inspect class Mine: def __init__(self): self.__value = 7 def __getvalue(self): /"""Gets seven""" /return self.__value mine = Mine() data = inspect.getdoc(mine) for m in inspect.getmembers(mine): if '__getvalue' in m[0]:

Re: Tool that can document private inner class?

On 2/8/23 08:25, Weatherby,Gerard wrote: No. I interpreted your query as “is there something that can read docstrings of dunder methods?” Have you tried the Sphinx specific support forums? https://www.sphinx-doc.org/en/master/support.html Yes. I've posted to both the -user and -dev group

Which more Pythonic - self.__class__ or type(self)?

Seems like an FAQ, and I've found a few things on StackOverflow that discuss the technical differences in edge cases, but I haven't found anything that talks about which form is considered to be more Pythonic in those situations where there's no functional difference. Is there any consensus? --

Spot the invalid syntax

le "/tmp/test.py", line 32 return ips ^ SyntaxError: invalid syntax I've checked for tabs and mismatched parentheses. Aargh! -- Ian Pilcher arequip...@gmail.com "I grew up before Mark Zuckerberg invented friendship" -- https://mail.python.org/mailman/listinfo/python-list

Re: Spot the invalid syntax

On 03/08/2018 05:26 PM, Chris Angelico wrote: On Fri, Mar 9, 2018 at 10:23 AM, Ian Pilcher wrote: (Because I certainly can't.) ips.update(_san_dnsname_ips(cname, True) return ips I've checked for tabs and mismatched parentheses. Check the immediately prec

Re: Spot the invalid syntax

bone-headed to use properly, apparently. -- ==== Ian Pilcher arequip...@gmail.com "I grew up before Mark Zuckerberg invented

Re: The basics of the logging module mystify me

now that I know that it exists). As far as I can remember, none of the logging tutorials that I read ever mentioned it. -- ======== Ian Pilcher arequip...@gmail.com "I grew

Irritating bytearray behavior

ts of ip.packed into the bytearray without changing its size? TIA -- ==== Ian Pilcher arequip...@gmail.com "I grew up before Mark Zuckerberg invented

Using a logging.Logger in a C extension

, etc.). PyArg_ParseTuple should be able to handle this with an "O!" format unit, but I can't figure out how to retrieve the type object for logging.Logger. Any hints, links, etc. appreciated. Thanks! -- ========

Get __name__ in C extension module

On 10/4/19 4:30 PM, Ian Pilcher wrote: Ideally, I would pass my existing Logging.logger object into my C function and use PyObject_CallMethod to call the appropriate method on it (info, debug, etc.). As I've researched this further, I've realized that this isn't the correc

Re: Get __name__ in C extension module

On 10/5/19 12:55 PM, Ian Pilcher wrote: This is straightforward, except that I cannot figure out how to retrieve the __name__. Making progress. I can get a __name__ value with: PyDict_GetItemString(PyEval_GetGlobals(), "__name__") I say "a __name__ value" because t

Re: Get __name__ in C extension module

do I access that later in one of my extension functions? The only thing I can think of would be to save it in a static variable, but static variables seem to be a no-no in extensions. -- ======== Ian Pilcher

Re: Get __name__ in C extension module

ts wrong and you get memory leaks of worse crash python. Well, I like driving cars with manual transmissions, so ... -- ======== Ian Pilcher arequip...@gmail.com "I grew up before

Re: Get __name__ in C extension module

bject actually is a logger. Doing that validation (by using an "O!" unit in the PyArg_ParseTuple format string) requires access to the logging.Logger type object, and I was unable to find a way to access that object by name. -- =====

Distutils - bdist_rpm - specify python interpretter location

--record=INSTALLED_FILES Is there a way to tell Distutils to use 'python2'? Thanks! -- ======== Ian Pilcher arequip...@gmail.com --

Re: Any socket library to communicate with kernel via netlink?

always found library called netlinkg but it actually does something like modify network address or check network card... Any idea is welcome https://pypi.org/project/pyroute2/ -- Ian Pilcher

Re: accessing elements of a tuple

Matthew Sacks wrote: > How can I access "DB" from the list directly using an index? list[0][1] ... or did I misunderstand your question? -- ======== Ian Pilcher arequip

Noob confused by ConfigParser defaults

How do a set a default for option-1 *only* in section-1? -- Ian Pilcher arequip...@gmail.com "I grew up before Mark Zuckerberg invented frien

Re: Noob confused by ConfigParser defaults

you! -- ==== Ian Pilcher arequip...@gmail.com "I grew up before Mark Zuckerberg invented friendship" -- https://mail.python.org/mailman/listinfo/python-list

Re: Noob confused by ConfigParser defaults

e") Perfect. Thank you! -- ============ Ian Pilcher arequip...@gmail.com "I grew up before Mark Zuckerberg invented friendship" -- https:/

python-daemon and PID files

creating my PID file manually in the child process, but systemd complains, because it wants the PID file to exist before the parent exits. -- ============ Ian Pilcher arequip...@gmail.com &q

Re: python-daemon and PID files

grandpappy, and it ought to be good enough you young whippersnappers today. In other words ... facepalm. Thanks! -- Ian Pilcher arequip...@gmail.com "I grew up before Mark Zucke

cryptography default_backend is "hazmat"?

? -- Ian Pilcher arequip...@gmail.com "I grew up before Mark Zuckerberg invented friendship" -- https://mail.python.org/mailman/listinfo/python-list

Re: cryptography default_backend is "hazmat"?

ing a certificate) without a backend, and all of the backends are "hazmat". So what's the point of marking something as hazmat, if a large portion of the rest of the module can't be used without it? -- =======

Re: cryptography default_backend is "hazmat"?

end one of them? -- ============ Ian Pilcher arequip...@gmail.com "I grew up before Mark Zuckerberg invented friendship" =

Why does Python want to read /proc/meminfo

tinue on and exit cleanly, so it doesn't seem to strictly require the access. Does anyone know why Python is trying to access this file, or what functionality I might be missing if I don't allow the access? -- ==========

Re: Why does Python want to read /proc/meminfo

n the system. Delightful. -- ======== Ian Pilcher arequip...@gmail.com "I grew up before Mark Zuckerberg invented friendship" -- https://mail

Get list of attributes from list of objects?

namelist = [] for foo in foolist: namelist.append(foo.name) Is there a way to avoid the for loop and create 'namelist' with a single expression? -- ======== Ian Pilcher arequip

Re: Get list of attributes from list of objects?

On 08/02/2017 12:49 PM, Chris Angelico wrote: On Thu, Aug 3, 2017 at 3:21 AM, Ian Pilcher wrote: You can't eliminate the loop, but you can compact it into a single logical operation: namelist = [foo.name for foo in foolist] That's a "list comprehension", and is an eleg

Subclassing dict to modify values

__? (I.e. will any other methods/operators that add values to the dictionary call my __setitem__ method?) -- ============ Ian Pilcher arequip...@gmail.com "I grew up before Mark

__new__ and __init__ - why does this work?

the call to __new__ actually initializes the set (since my __init__ never calls the superclass __init__). Is this a particular behavior of frozenset, or am I missing something about the way that __new__ and __init__ interact? -- ========

Re: __new__ and __init__ - why does this work?

mainly me being unfamiliar with the frozenset API (and not overly concerned about the size of the _registry, since I expect that there will be a very small number of entries). Your version is much more elegant. Thank you! -- ======== Ian Pil

Re: __new__ and __init__ - why does this work?

On 08/09/2017 07:54 AM, Steve D'Aprano wrote: On Wed, 9 Aug 2017 10:08 am, Ian Pilcher wrote: I have created a class to provide a "hash consing"[1] set. Your footnote for [1] appears to be missing. What's a hash consing set? It appears to be nothing more than frozen set

Getty fully qualified class name from class object

How can I programmatically get the fully qualified name of a class from its class object? (I'm referring to the name that is shown when str() or repr() is called on the class object.) Neither the __name__ or __qualname__ class attributes include the module. For example: >>> import logging

Re: Getty fully qualified class name from class object

On 8/22/23 11:13, Greg Ewing via Python-list wrote: Classes have a __module__ attribute: >>> logging.Handler.__module__ 'logging' Not sure why I didn't think to look for such a thing. Looks like it's as simple as f'{cls.__module__}.{cls.__qualname__}'. Thanks! -- ==

Re: Struggling to understand Callable type hinting

(Note: I have mail delivery disabled for this list and read it through GMane, so I am unable to respond with correct threading if I'm not cc'ed directly.) On 1/17/25 7:26 PM, dn via Python-list wrote: On 18/01/25 12:33, Ian Pilcher via Python-list wrote: I am making my first atte

[SOLVED] Struggling to understand Callable type hinting

(Note: I have mail delivery disabled for this list and read it through GMane, so I am unable to respond with correct threading if I'm not cc'ed directly.) On 1/18/25 8:52 AM, Ian Pilcher wrote: (And even that wouldn't really be correct, if it worked, because it doesn't e

Struggling to understand Callable type hinting

I am making my first attempt to use type hinting in a new project, and I'm quickly hitting areas that I'm having trouble understanding. One of them is how to write type hints for a method decorator. Here is an example that illustrates my confusion. (Sorry for the length.) import collections.a

Any way to "subclass" typing.Annotated?

(Note: I have mail delivery disabled for this list and read it through GMane. Please copy me on any responses, so that I can respond with proper threading.) From the things that I probably shouldn't spend my free time on department ... As background, I'm working on a project that is going to i

Runtime detection of PEP 563

Given a class object (C), is it possible to *reliably* determine whether the class was compiled with PEP 563 (from __future__ import annotations) enabled? Note that simply looking for the presence of C.__module__.annotations is not really reliable. It will fail in the presence of any of these co