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Activity for Karl Knechtel
| Type | On... | Excerpt | Status | Date |
|---|---|---|---|---|
| Edit | Post #292958 |
Post edited: Update to match the change to the question example input |
— | 5 months ago |
| Edit | Post #292957 |
Post edited: Reduce the input set to a more tractable size to facilitate comparisons and discussion |
— | 5 months ago |
| Edit | Post #292958 | Initial revision | — | 5 months ago |
| Answer | — |
A: Generating combinations of elements, which are themselves sequences of the same length, where the elements have no value in common at any position Using a recursive generator There isn't anything like a built-in solution for this algorithm, but it's easy to express the desired output recursively. A valid output combination of k-many inputs looks like an arbitrarily selected first element, followed by a combination of k-1-many elements that: ... (more) |
— | 5 months ago |
| Edit | Post #292957 |
Post edited: |
— | 5 months ago |
| Edit | Post #292957 |
Post edited: More clarification and mathematical rigor. |
— | 5 months ago |
| Edit | Post #292957 |
Post edited: |
— | 5 months ago |
| Edit | Post #292957 | Initial revision | — | 5 months ago |
| Question | — |
Generating combinations of elements, which are themselves sequences of the same length, where the elements have no value in common at any position This question is adapted from a question I just helped fix up on Stack Overflow. I'm giving a different motivating example which I think will make it clearer what the requirements are and why a naive approach would take prohibitively long. (Also, I want to attempt an answer, but by personal polic... (more) |
— | 5 months ago |
| Comment | Post #292774 |
I think this is simply a "mental typo" or failure to think it through properly. As a hint: you say that your "goal is to compile all `*.c` files" - notice that you *didn't* say "all `%.c` files"? Also, if you're using existing Stack Overflow Q&A to try to solve something, obviously you shouldn't coun... (more) |
— | 6 months ago |
| Edit | Post #292334 | Initial revision | — | 8 months ago |
| Answer | — |
A: What actually is a pytest fixture? The term long predates Pytest and is not at all specific to Python. The idea is described on Wikipedia: > In the context of software a test fixture (also called "test context") is used to set up system state and input data needed for test execution.2 For example, the Ruby on Rails web framework us... (more) |
— | 8 months ago |
| Comment | Post #292286 |
What kind of danger specifically do you have in mind? This is a very different question if it's about supposed security exploits vs. losing work by overwriting your working copy. (more) |
— | 8 months ago |
| Edit | Post #292142 |
Post edited: Improve clarity: simplify a bit; minor word-choice etc. tweaks; fix per comment discussion to present two ways of implementing a SSG clearly (instead of as separate but "related solutions") |
— | 8 months ago |
| Suggested Edit | Post #292142 |
Suggested edit: Improve clarity: simplify a bit; minor word-choice etc. tweaks; fix per comment discussion to present two ways of implementing a SSG clearly (instead of as separate but "related solutions") (more) |
helpful | 8 months ago |
| Edit | Post #292139 |
Post edited: Reusing code in an ordinary programming language looks very different. Codidact doesn't put tags in the page title automatically like Stack Overflow does; so it's useful to make the title unambiguously indicate a language. |
— | 8 months ago |
| Edit | Post #292162 |
Post edited: The underlying motivation or purpose for a how-to question doesn't actually change what the question is about. This question is not about *using* version control. |
— | 8 months ago |
| Suggested Edit | Post #292139 |
Suggested edit: Reusing code in an ordinary programming language looks very different. Codidact doesn't put tags in the page title automatically like Stack Overflow does; so it's useful to make the title unambiguously indicate a language. (more) |
helpful | 9 months ago |
| Suggested Edit | Post #292162 |
Suggested edit: The underlying motivation or purpose for a how-to question doesn't actually change what the question is about. This question is not about *using* version control. (more) |
helpful | 9 months ago |
| Edit | Post #291792 |
Post edited: Add footnote with important technical corrigendum |
— | 9 months ago |
| Edit | Post #291792 |
Post edited: Update status of PEP 541 takedown request |
— | 9 months ago |
| Comment | Post #291858 |
... wait, *really*? Because whenever *I* look at Stack Overflow, I see tons of people suggesting the devil-may-come workaround, and the answer with a proper disclaimer gets buried. There was [literally a thread just today](https://discuss.python.org/t/_/56900) on the official Python Discourse forum c... (more) |
— | 10 months ago |
| Comment | Post #291858 |
The rhetoric in this answer makes it hard to take seriously. It seems fairly clear that it's primarily the distro maintainers who want the system package manager to be used for the system Python; and the idea is motivated by known potential harms, not devs' aesthetics or morality.
PEP 668 lays out... (more) |
— | 10 months ago |
| Edit | Post #291848 | Initial revision | — | 10 months ago |
| Question | — |
Should beginner-oriented Q&A here include basic use of a terminal (command line) for developers? It seems that year over year, computers constantly get easier to use, and it becomes easier for people to start learning to program who have never touched it before. This comes with the consequence that increasingly more new programmers have disturbingly little (and increasingly less) understanding o... (more) |
— | 10 months ago |
| Edit | Post #291737 |
Post edited: Emphasize common failure mode and include a reference link |
— | 10 months ago |
| Comment | Post #291479 |
"In this way, there is just more search indexed words to good answers." is a strange assertion to me. Finding a needle in a haystack doesn't become easier if you add more hay. It becomes easier if you add more needles. (more) |
— | 10 months ago |
| Comment | Post #291479 |
We can (and should) go out of our way to explain things as clearly as possible; organize comprehensive answers with `<details>` sections so that excess technical detail can be easily skipped over; write plainly while using simple (but **correct**) terminology; etc.
But it is simply not possible t... (more) |
— | 10 months ago |
| Comment | Post #291479 |
Specifically in regards to "In fact, you're told the question was a duplicate of a different question that doesn't seem to have answers for your question." - you seem to be under the impression that if duplicate questions *weren't* closed as duplicates, then OP (who is imagined not to be able to unde... (more) |
— | 10 months ago |
| Comment | Post #291479 |
I'm here in large part because Stack Overflow is failing to do **enough of** several of the things you consider bad. Starting over allows for creating some actual quality reference content for once. The things you consider merely "similar" *really are* duplicates in most cases, and the right approach... (more) |
— | 10 months ago |
| Edit | Post #291840 |
Post edited: |
— | 10 months ago |
| Edit | Post #291840 | Initial revision | — | 10 months ago |
| Answer | — |
A: Why does Pip display "error: externally-managed-environment", and what can I do about it? Reminder: never use `sudo` to run Pip. This can never properly fix a problem and only introduces serious security risks. Installing third-party packages from PyPI can run arbitrary code at install time, by design, so it should never be given root privileges. Anyone who has observed using `sudo... (more) |
— | 10 months ago |
| Edit | Post #291839 | Initial revision | — | 10 months ago |
| Question | — |
Why does Pip display "error: externally-managed-environment", and what can I do about it? My (non-Windows) operating system came with Python, but that Python didn't include Pip. I followed instructions to install Pip for the included Python, using my system's package manager. But now when I try to use Pip, I[^1] get errors like: ```none error: externally-managed-environment × Th... (more) |
— | 10 months ago |
| Comment | Post #291805 |
Yes, I think that fixes all problems. (more) |
— | 10 months ago |
| Comment | Post #291805 |
Right now, it reads to me like nine questions bundled together - one for each call - each of which is best answered by linking the corresponding documentation. This doesn't really make it a coherent, useful question for a Q&A site, IMO. If the underlying idea is to make it possible for people to sele... (more) |
— | 10 months ago |
| Edit | Post #291798 | Initial revision | — | 10 months ago |
| Answer | — |
A: Why can't I run freshly-installed Python from the command line on Windows? Why the installed Python isn't found By default, Windows installers for Python install Python in a folder that is not listed in the `PATH` environment variable. This means that executables in that folder won't be found by name; the command line needs an explicit path to them. Rationale Gener... (more) |
— | 10 months ago |
| Edit | Post #291797 | Initial revision | — | 10 months ago |
| Question | — |
Why can't I run freshly-installed Python from the command line on Windows? I tried installing Python on an old computer running Windows 8[^1]. I know for a fact that there was never any previous installation of Python on the machine. The installation appeared to be successful, but I can't run Python from the command line - I get the standard error `'python' is not recognize... (more) |
— | 10 months ago |
| Edit | Post #291796 | Initial revision | — | 10 months ago |
| Answer | — |
A: What happened, or is happening, to other parts of the standard library? Why are they going missing? A handful of standard library modules either have been, or will soon be, removed from the Python standard library, as part of a general cleanup effort. These modules are seen as out of date and no longer useful, as they serve purposes that are not relevant today. The hope is that removing them will r... (more) |
— | 10 months ago |
| Edit | Post #291795 | Initial revision | — | 10 months ago |
| Question | — |
What happened, or is happening, to other parts of the standard library? Why are they going missing? In Python 3.12, I noticed that some libraries seem to be missing or "deprecated": ``` >>> import asynchat Traceback (most recent call last): File "", line 1, in ModuleNotFoundError: No module named 'asynchat' >>> import cgi :1: DeprecationWarning: 'cgi' is deprecated and slated for remova... (more) |
— | 10 months ago |
| Edit | Post #291794 | Initial revision | — | 10 months ago |
| Answer | — |
A: Why won't Matplotlib show me a plot? Matplotlib uses a backend to render the plot. Some backends are "GUI backends", meaning that they can render into a window that displays on your screen. Others are "non-GUI backends" which can only save the plot into an image file. Matplotlib doesn't come with any GUI backends except for `TkAgg`, ... (more) |
— | 10 months ago |
| Edit | Post #291793 | Initial revision | — | 10 months ago |
| Question | — |
Why won't Matplotlib show me a plot? I installed Matplotlib and tried a simple demo, but I got a warning message and no plot showed up: ``` >>> import matplotlib.pyplot as plt >>> plt.plot([1,2,3],[4,5,6]) [] >>> plt.show() :1: UserWarning: Matplotlib is currently using agg, which is a non-GUI backend, so cannot show the figure.... (more) |
— | 10 months ago |
| Edit | Post #291792 | Initial revision | — | 10 months ago |