Re: Division-Bug in decimal and mpmath

On 2024-12-14 at 12:08:29 +, Mark Bourne via Python-list wrote: > Martin Ruppert wrote: > > Hi, > > > > the division 0.4/7 provides a wrong result. It should give a periodic > > decimal fraction with at most six digits, but it doesn't. > > > > Below is the comparison of the result of decima

Re: shutil.rmtree() fails when used in Fedora (rpm) "mock" environment

On 2024-10-24 at 20:54:53 +0100, MRAB via Python-list wrote: > On 2024-10-24 20:21, Left Right wrote: > > > > > The stack is created on line 760 with os.lstat and entries are > > > > > appended > > > > > on lines 677 (os.rmdir), 679 (os.close) and 689 (os.lstat). > > > > > > > > > > 'func' is po

Re: Help with Streaming and Chunk Processing for Large JSON Data (60 GB) from Kenna API

On 2024-10-01 at 23:03:01 +0200, Left Right wrote: > > If I recognize the first digit, then I *can* hand that over to an > > external function to accumulate the digits that follow. > > And what is that external function going to do with this information? > The point is you didn't parse anything

Re: Help with Streaming and Chunk Processing for Large JSON Data (60 GB) from Kenna API

On 2024-09-30 at 21:34:07 +0200, Regarding "Re: Help with Streaming and Chunk Processing for Large JSON Data (60 GB) from Kenna API," Left Right via Python-list wrote: > > What am I missing? Handwavingly, start with the first digit, and as > > long as the next character is a digit, multipliy th

Re: Help with Streaming and Chunk Processing for Large JSON Data (60 GB) from Kenna API

On 2024-09-30 at 18:48:02 -0700, Keith Thompson via Python-list wrote: > 2qdxy4rzwzuui...@potatochowder.com writes: > [...] > > In Common Lisp, you can write integers as #nnR[digits], where nn is the > > decimal representation of the base (possibly without a leading zero), > > the # and the R are

Re: Help with Streaming and Chunk Processing for Large JSON Data (60 GB) from Kenna API

On 2024-10-01 at 09:09:07 +1000, Chris Angelico via Python-list wrote: > On Tue, 1 Oct 2024 at 08:56, Grant Edwards via Python-list > wrote: > > > > On 2024-09-30, Dan Sommers via Python-list wrote: > > > > > In Common Lisp, integers can be written in any inte

Re: Help with Streaming and Chunk Processing for Large JSON Data (60 GB) from Kenna API

On 2024-10-01 at 04:46:35 +1000, Chris Angelico via Python-list wrote: > On Tue, 1 Oct 2024 at 04:30, Dan Sommers via Python-list > wrote: > > > > But why do I need to start with the least > > significant digit? > > If you start from the most significant, you d

Re: Help with Streaming and Chunk Processing for Large JSON Data (60 GB) from Kenna API

On 2024-09-30 at 11:44:50 -0400, Grant Edwards via Python-list wrote: > On 2024-09-30, Left Right via Python-list wrote: > > Whether and to what degree you can stream JSON depends on JSON > > structure. In general, however, JSON cannot be streamed (but commonly > > it can be). > > > > Imagine a

Re: Common objects for CLI commands with Typer

On 2024-09-23 at 19:00:10 +0100, Barry Scott wrote: > > On 21 Sep 2024, at 11:40, Dan Sommers via Python-list > > wrote: > But once your code gets big the disciple of using classes helps > maintenance. Code with lots of globals is problematic. Even before your code gets big

Re: Common objects for CLI commands with Typer

On 2024-09-21 at 06:38:05 +0100, Barry via Python-list wrote: > > On 20 Sep 2024, at 21:01, Loris Bennett via Python-list > > wrote: > > > > Hi, > > > > Apologies if the following description is to brief - I can expand if no > > one knows what I'm on about, but maybe a short description is e

Re: Is there a better way? [combining f-string, thousands separator, right align]

On 2024-08-26 at 20:42:32 +1200, dn via Python-list wrote: > and if we really want to go over-board: > > >>> RIGHT_JUSTIFIED = ">" > >>> THOUSANDS_SEPARATOR = "," > >>> s_format = F"{RIGHT_JUSTIFIED}{S_FIELD_WIDTH}{THOUSANDS_SEPARATOR}" > > or (better) because right-justification is the default

Re: new here

On 2024-08-20 at 23:16:48 -0400, AVI GROSS via Python-list wrote: > I do wonder if the people at python.org want multiple forums. There is > also one that sort of tutors people that obviously has an overlapping > but different audience. $ python -m this The Zen of Python, by Tim Peters [...] The

Re: Best use of "open" context manager

On 2024-07-06 at 11:49:06 +0100, Rob Cliffe via Python-list wrote: > Is there a better / more Pythonic solution? https://docs.python.org/3/library/fileinput.html At least this attempts to abstract the problem of iterating over a file (or multiple files) into a library routine. I've used it a l

Re: Any marginally usable programming language approaches an ill defined barely usable re-implementation of half of Common-Lisp

On 2024-05-29 at 11:39:14 -0700, HenHanna via Python-list wrote: > On 5/27/2024 1:59 PM, 2qdxy4rzwzuui...@potatochowder.com wrote: > > https://en.wikipedia.org/wiki/Greenspun%27s_tenth_rule [...] > Are the Rules 1--9 by Greenspun good too? I don't know; let me look it up. Oh, there it i

Formatted Output and Argument Parsing (was: Re: Flubbed it in the second interation through the string: range error... HOW?)

On 2024-05-29 at 17:14:51 +1000, Chris Angelico via Python-list wrote: > I wouldn't replace str.format() everywhere, nor would I replace > percent encoding everywhere - but in this case, I think Thomas is > correct. Not because it's 2024 (f-strings were brought in back in > 2015, so they're hardl

Re: Any marginally usable programming language approaches an ill defined barely usable re-implementation of half of Common-Lisp

On 2024-05-27 at 12:37:01 -0700, HenHanna via Python-list wrote: > > On 5/27/2024 7:18 AM, Cor wrote: > > Some entity, AKA "B. Pym" , > > wrote this mindboggling stuff: > > (selectively-snipped-or-not-p) > > > > > On 12/16/2023, c...@clsnet.nl wrote: > > > > > > > Any marginally usable program

Re: Terminal Emulator (Posting On Python-List Prohibited)

On 2024-05-19 at 18:13:23 +, Gilmeh Serda via Python-list wrote: > Was there a reason they chose the name Pip? Package Installer for Python https://pip.pypa.io/en/stable/index.html -- https://mail.python.org/mailman/listinfo/python-list

Re: Terminal Emulator (Posting On Python-List Prohibited)

On 2024-05-19 at 18:13:23 +, Gilmeh Serda via Python-list wrote: > Was there a reason they chose the name Pip? Package Installer for Python https://pip.pypa.io/en/stable/index.html Every time I see PIP, I think Peripheral Interchange Program, but I'm old. -- https://mail.python.org/mailma

Re: how to discover what values produced an exception?

On 2024-05-03 at 10:56:39 -0300, Johanne Fairchild via Python-list wrote: > How to discover what values produced an exception? Or perhaps---why > doesn't the Python traceback show the values involved in the TypeError? > For instance: > > --8<-

Re: Configuring an object via a dictionary

On 2024-03-20 at 09:49:54 +0100, Roel Schroeven via Python-list wrote: > You haven't only checked for None! You have rejected *every* falsish value, > even though they may very well be acceptable values. OTOH, only you can answer these questions about your situations. Every application, every i

Re: Configuring an object via a dictionary

On 2024-03-15 at 15:48:17 -0400, Thomas Passin via Python-list wrote: > [...] And I suppose there is always the possibility that sometime in > the future an "or" clause like that will be changed to return a > Boolean, which one would expect anyway. Not only is the current value is way more usefu

Re: Extract lines from file, add to new files

On 2024-01-13 at 11:34:29 +0100, Left Right wrote: > > The Python term, at least colloquially, is "tuple unpacking." That quote is from me. Please do preserve attributions. > Well, why use colloquialism if there's a language specification? Also, > there weren't any tuples used in my example, a

Re: Extract lines from file, add to new files

On 2024-01-13 at 02:02:39 +0100, Left Right via Python-list wrote: > Actually, after some Web search. I think, based on this: > https://docs.python.org/3/reference/simple_stmts.html#grammar-token-python-grammar-augtarget > that in Python you call this "augmented assignment target". The term > is

Re: How/where to store calibration values - written by program A, read by program B

On 2023-12-06 at 09:32:02 +, Chris Green via Python-list wrote: > Thomas Passin wrote: [...] > > Just go with an .ini file. Simple, well-supported by the standard > > library. And it gives you key/value pairs. > > > My requirement is *slightly* more complex than just key value pairs, > i

Re: on writing a number as 2^s * q, where q is odd

On 2023-11-29 at 21:44:01 -0300, Julieta Shem via Python-list wrote: > How would you write this procedure? > > --8<---cut here---start->8--- > def powers_of_2_in(n): > s = 0 > while "I still find factors of 2 in n...": > q, r = divmod(n, 2) > if r

Re: Beep on WIndows 11

On 2023-11-11 at 23:44:19 +, Y Y via Python-list wrote: > I am curious and humble to ask: What is the purpose of a BEEP? It's a simple way for a terminal-based program to alert (hence '\a') a user or an operator that their attention is requested or required. See also

Re: Why doc call `__init__` as a method rather than function?

On 2023-09-15 at 10:49:10 +, scruel tao via Python-list wrote: > ```python > >>> class A: > ... def __init__(self): > ... pass > ... > >>> A.__init__ > > >>> a = A() > >>> a.__init__ > > > ``` > > On many books and even the official documents, it seems that many authors > prefer to c

Re: ANN: A new version (0.5.1) of python-gnupg has been released.

On 2023-07-22 at 11:04:35 +, Vinay Sajip via Python-list wrote: > What Changed? > = What changed, indeed. Maybe I'm old, and curmudgeonly, but it would be nice if the body of these annoucement emails (not just this one) contained the name of the program and a one-line summary of