Re: Dataclasses, immutability(?), and ChatGPT

Op 12/04/2023 om 6:58 schreef dn via Python-list: Are dataclasses (or instances thereof) mutable or immutable? - and in what sense? Instances of dataclasses are mutable, just like normal classes. Dataclasses *are* normal classes, with some extra special methods. They are totally different from

Re: Christoph Gohlke and compiled packages

Well thank you Christoph Gohlke and thank you Ian Bicking and colleagues. I just used pip to nakedly install psycopg2 and Pillow without a hitch. My distrust of Windows has kept me going back to Christoff's well for years. Maybe it is time to assume innocence unless proven guilty ;-) Thanks

Re: Dataclasses, immutability(?), and ChatGPT

On 2023-04-12, Roel Schroeven wrote: >> Huh? If we'd been discussing namedtuples over (say) dictionaries, I'd >> perhaps have accepted the reply. > > ChatGPT is wrong. > >> Anything I've 'missed'? >> - or a salutary tale of not depending upon ChatGPT etc? > You didn't miss anything, ChatGPT is

Re: Dataclasses, immutability(?), and ChatGPT

On 4/12/2023 12:58 AM, dn via Python-list wrote: Are dataclasses (or instances thereof) mutable or immutable? - and in what sense? Have been experimenting with ChatGPT. In particular: its possibilities as a trainer, good ideas for methods of introducing new topics, its capability for drawing-

Re: Christoph Gohlke and compiled packages

Sadly Windows is still in the dock. The jury is still out. Turns out the "without a hitch" was based on cached wheels. I'm going to start from scratch with new projects using Pythons 3.8, 3.10 and 3.11 and report back. Cheers Mike On 12/04/2023 6:13 pm, Mike Dewhirst wrote: Well thank you

Re: Christoph Gohlke and compiled packages

On 4/12/2023 8:59 AM, Mike Dewhirst wrote: Sadly Windows is still in the dock. The jury is still out. Turns out the "without a hitch" was based on cached wheels. I'm going to start from scratch with new projects using Pythons 3.8, 3.10 and 3.11 and report back. Sorry for the length to come,

Weak Type Ability for Python

Hi all, Please make this command for Python (if possible): >>> x=1 >>> y='a' >>> wprint (x+y) >>> 1a In fact make a new type of print command which can print and show strings and integers together. Sincerely yours, Ali. -- https://mail.python.org/mailman/listinfo/python-list

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for a 'good python'

Hi everyone, some time ago I wrote a class to determine if an ipv4 address belonged to a subnet. Seldom using python I'm pretty sure it's not written in 'good python' nor too portable. Could you give me some advice to make it better? class calcip: def __init__(self, psubnet: str): ssu

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Re: for a 'good python'

Stefan Ram ha scritto: jak writes: @property def subnet(self): return self.__to_str(self.__tsubnet) Maybe each of those attributes should be an object of a special class where your "__to_str" is "__str__"? E.g., # code in "calcip.__init__" self.tsubnet = ip_address_class.from_int(

Re: Weak Type Ability for Python

On Thu, 13 Apr 2023 at 03:05, Ali Mohseni Roodbari wrote: > > Hi all, > Please make this command for Python (if possible): > > >>> x=1 > >>> y='a' > >>> wprint (x+y) > >>> 1a > > In fact make a new type of print command which can print and show strings > and integers together. > Try: print(x, y)

Re: Weak Type Ability for Python

On 4/12/23 11:11, Chris Angelico wrote: On Thu, 13 Apr 2023 at 03:05, Ali Mohseni Roodbari wrote: Hi all, Please make this command for Python (if possible): x=1 y='a' wprint (x+y) 1a In fact make a new type of print command which can print and show strings and integers together. Try: p

Re: Weak Type Ability for Python

On 4/12/2023 1:11 PM, Chris Angelico wrote: On Thu, 13 Apr 2023 at 03:05, Ali Mohseni Roodbari wrote: Hi all, Please make this command for Python (if possible): x=1 y='a' wprint (x+y) 1a In fact make a new type of print command which can print and show strings and integers together. Try

Re: Weak Type Ability for Python

On 2023-04-12 19:57, Mats Wichmann wrote: On 4/12/23 11:11, Chris Angelico wrote: On Thu, 13 Apr 2023 at 03:05, Ali Mohseni Roodbari wrote: Hi all, Please make this command for Python (if possible): x=1 y='a' wprint (x+y) 1a In fact make a new type of print command which can print and sho

Re: Weak Type Ability for Python

On 2023-04-12, Ali Mohseni Roodbari wrote: > Hi all, > Please make this command for Python (if possible): > x=1 y='a' wprint (x+y) 1a If that's what you want, use PHP or some other language. Don't try to ruin Python. > In fact make a new type of print command which can print

Re: Weak Type Ability for Python

On 2023-04-12 at 14:51:44 -0400, Thomas Passin wrote: > On 4/12/2023 1:11 PM, Chris Angelico wrote: > > On Thu, 13 Apr 2023 at 03:05, Ali Mohseni Roodbari > > wrote: > > > > > > Hi all, > > > Please make this command for Python (if possible): > > > > > > > > > x=1 > > > > > > y='a' > > > > > >

Re: for a 'good python'

 > On 12 Apr 2023, at 18:10, jak wrote: > Hi everyone, > some time ago I wrote a class to determine if an ipv4 address belonged > to a subnet. Seldom using python I'm pretty sure it's not written in > 'good python' nor too portable. Could you give me some advice to make it > better? > > class

Re: for a 'good python'

Barry ha scritto:  On 12 Apr 2023, at 18:10, jak wrote: Hi everyone, some time ago I wrote a class to determine if an ipv4 address belonged to a subnet. Seldom using python I'm pretty sure it's not written in 'good python' nor too portable. Could you give me some advice to make it better?

Re: Christoph Gohlke and compiled packages

On 12/04/2023 10:59 pm, Mike Dewhirst wrote: Sadly Windows is still in the dock. The jury is still out. Turns out the "without a hitch" was based on cached wheels. I'm going to start from scratch with new projects using Pythons 3.8, 3.10 and 3.11 and report back. Report summary: pip install

Re: Christoph Gohlke and compiled packages

On 2023-04-13 02:27, Mike Dewhirst wrote: On 12/04/2023 10:59 pm, Mike Dewhirst wrote: Sadly Windows is still in the dock. The jury is still out. Turns out the "without a hitch" was based on cached wheels. I'm going to start from scratch with new projects using Pythons 3.8, 3.10 and 3.11 and

Re: Christoph Gohlke and compiled packages

On 4/12/23, Mike Dewhirst wrote: > > Collecting psycopg2==2.9.3 x86 and x64 wheels are available for Python 3.11 if you can use Psycopg 2 version 2.9.5 or 2.9.6 instead of 2.9.3: https://pypi.org/project/psycopg2/2.9.5/#files https://pypi.org/project/psycopg2/2.9.6/#files -- https://mail.python

RE: Weak Type Ability for Python

As originally written, the question posed has way too many possible answers but the subject line may give a hint. Forget printing. The Python statement 1 + "a" SHOULD fail. The first is an integer and the second is string. These two are native Python objects that neither define what to do if the

Re: Christoph Gohlke and compiled packages

On 13/04/2023 12:00 pm, Eryk Sun wrote: On 4/12/23, Mike Dewhirst wrote: Collecting psycopg2==2.9.3 x86 and x64 wheels are available for Python 3.11 if you can use Psycopg 2 version 2.9.5 or 2.9.6 instead of 2.9.3: https://pypi.org/project/psycopg2/2.9.5/#files https://pypi.org/project/psycop

Re: Weak Type Ability for Python

On 12Apr2023 22:12, avi.e.gr...@gmail.com wrote: I suspect the OP is thinking of languages like PERL or JAVA which guess for you and make such conversions when it seems to make sense. JavaScript guesses. What a nightmare. Java acts like Python and will forbid it on type grounds (at compile t

Re: Weak Type Ability for Python

On 2023-04-13 03:12, avi.e.gr...@gmail.com wrote: As originally written, the question posed has way too many possible answers but the subject line may give a hint. Forget printing. The Python statement 1 + "a" SHOULD fail. The first is an integer and the second is string. These two are native

Re: Weak Type Ability for Python

On 2023-04-13 03:21, Cameron Simpson wrote: On 12Apr2023 22:12, avi.e.gr...@gmail.com wrote: I suspect the OP is thinking of languages like PERL or JAVA which guess for you and make such conversions when it seems to make sense. JavaScript guesses. What a nightmare. Java acts like Python and

RE: Weak Type Ability for Python

On closer reading, the OP may be asking how to make a function doing what they want, albeit without a plus. Here is a python function as a one-liner that takes exactly two arguments of any kind (including string and integer) and concatenates them into one string without anything between and prints

Re: Weak Type Ability for Python

On 13Apr2023 03:36, MRAB wrote: I thought that in Java you can, in fact, concatenate a string and an int, so I did a quick search online and it appears that you can. I stand corrected. I could have sworn it didn't, but it has been a long time. - Cameron Simpson -- https://mail.python.org/ma

RE: Weak Type Ability for Python

Given the significant number of languages other than Python that have some version of a feature that allows implicit conversion of unlike operands to concatenate something like a "number" and a string into a string, the question may not be silly as to how or why Python chose as it chose. As I see